From c39d1c566141cbab707c5c939c25ed53ca35a0e1 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E5=90=91=E9=87=91=E6=88=90?= <2693239786@qq.com> Date: Sat, 8 Apr 2023 15:54:30 +0800 Subject: [PATCH] =?UTF-8?q?1=E3=80=81=E5=90=91=E9=87=91=E6=88=90-=E7=B2=BE?= =?UTF-8?q?=E8=AF=BB?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../AndroidManifest.xml | 339 +++++++ .../color/primary_text_dark.xml | 36 + .../color/secondary_text_dark.xml | 23 + .../drawable/new_note.xml | 36 + .../layout/account_dialog_title.xml | 71 ++ .../layout/add_account_text.xml | 43 + .../layout/datetime_picker.xml | 80 ++ .../layout/dialog_edit_text.xml | 28 + .../layout/folder_list_item.xml | 38 + .../ui/AlarmAlertActivity.java | 238 +++++ .../ui/AlarmInitReceiver.java | 80 ++ .../ui/AlarmReceiver.java | 32 + .../ui/DateTimePicker.java | 500 ++++++++++ .../ui/DateTimePickerDialog.java | 92 ++ .../ui/DropdownMenu.java | 65 ++ .../ui/FoldersListAdapter.java | 86 ++ .../ui/NoteEditActivity.java | 912 ++++++++++++++++++ .../ui/NoteEditText.java | 229 +++++ .../ui/NoteItemData.java | 229 +++++ 19 files changed, 3157 insertions(+) create mode 100644 doc/向金成——精读代码/AndroidManifest.xml create mode 100644 doc/向金成——精读代码/color/primary_text_dark.xml create mode 100644 doc/向金成——精读代码/color/secondary_text_dark.xml create mode 100644 doc/向金成——精读代码/drawable/new_note.xml create mode 100644 doc/向金成——精读代码/layout/account_dialog_title.xml create mode 100644 doc/向金成——精读代码/layout/add_account_text.xml create mode 100644 doc/向金成——精读代码/layout/datetime_picker.xml create mode 100644 doc/向金成——精读代码/layout/dialog_edit_text.xml create mode 100644 doc/向金成——精读代码/layout/folder_list_item.xml create mode 100644 doc/向金成——精读代码/ui/AlarmAlertActivity.java create mode 100644 doc/向金成——精读代码/ui/AlarmInitReceiver.java create mode 100644 doc/向金成——精读代码/ui/AlarmReceiver.java create mode 100644 doc/向金成——精读代码/ui/DateTimePicker.java create mode 100644 doc/向金成——精读代码/ui/DateTimePickerDialog.java create mode 100644 doc/向金成——精读代码/ui/DropdownMenu.java create mode 100644 doc/向金成——精读代码/ui/FoldersListAdapter.java create mode 100644 doc/向金成——精读代码/ui/NoteEditActivity.java create mode 100644 doc/向金成——精读代码/ui/NoteEditText.java create mode 100644 doc/向金成——精读代码/ui/NoteItemData.java diff --git a/doc/向金成——精读代码/AndroidManifest.xml b/doc/向金成——精读代码/AndroidManifest.xml new file mode 100644 index 00000000..e71899a8 --- /dev/null +++ b/doc/向金成——精读代码/AndroidManifest.xml @@ -0,0 +1,339 @@ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + diff --git a/doc/向金成——精读代码/color/primary_text_dark.xml b/doc/向金成——精读代码/color/primary_text_dark.xml new file mode 100644 index 00000000..d5b593c8 --- /dev/null +++ b/doc/向金成——精读代码/color/primary_text_dark.xml @@ -0,0 +1,36 @@ + + + + + + + + + + + + + \ No newline at end of file diff --git a/doc/向金成——精读代码/color/secondary_text_dark.xml b/doc/向金成——精读代码/color/secondary_text_dark.xml new file mode 100644 index 00000000..70af79a2 --- /dev/null +++ b/doc/向金成——精读代码/color/secondary_text_dark.xml @@ -0,0 +1,23 @@ + + + + + + + + \ No newline at end of file diff --git a/doc/向金成——精读代码/drawable/new_note.xml b/doc/向金成——精读代码/drawable/new_note.xml new file mode 100644 index 00000000..6a915d8c --- /dev/null +++ b/doc/向金成——精读代码/drawable/new_note.xml @@ -0,0 +1,36 @@ + + + + + + + + + + + diff --git a/doc/向金成——精读代码/layout/account_dialog_title.xml b/doc/向金成——精读代码/layout/account_dialog_title.xml new file mode 100644 index 00000000..bdf04407 --- /dev/null +++ b/doc/向金成——精读代码/layout/account_dialog_title.xml @@ -0,0 +1,71 @@ + + + + + + + + + + + + + + \ No newline at end of file diff --git a/doc/向金成——精读代码/layout/add_account_text.xml b/doc/向金成——精读代码/layout/add_account_text.xml new file mode 100644 index 00000000..4ba710ac --- /dev/null +++ b/doc/向金成——精读代码/layout/add_account_text.xml @@ -0,0 +1,43 @@ + + + + + + + + + \ No newline at end of file diff --git a/doc/向金成——精读代码/layout/datetime_picker.xml b/doc/向金成——精读代码/layout/datetime_picker.xml new file mode 100644 index 00000000..254ebe89 --- /dev/null +++ b/doc/向金成——精读代码/layout/datetime_picker.xml @@ -0,0 +1,80 @@ + + + + + + + + + + + + + + \ No newline at end of file diff --git a/doc/向金成——精读代码/layout/dialog_edit_text.xml b/doc/向金成——精读代码/layout/dialog_edit_text.xml new file mode 100644 index 00000000..2fe132ad --- /dev/null +++ b/doc/向金成——精读代码/layout/dialog_edit_text.xml @@ -0,0 +1,28 @@ + + + + + + \ No newline at end of file diff --git a/doc/向金成——精读代码/layout/folder_list_item.xml b/doc/向金成——精读代码/layout/folder_list_item.xml new file mode 100644 index 00000000..08deef23 --- /dev/null +++ b/doc/向金成——精读代码/layout/folder_list_item.xml @@ -0,0 +1,38 @@ + + + + + + + + \ No newline at end of file diff --git a/doc/向金成——精读代码/ui/AlarmAlertActivity.java b/doc/向金成——精读代码/ui/AlarmAlertActivity.java new file mode 100644 index 00000000..3f2dd21f --- /dev/null +++ b/doc/向金成——精读代码/ui/AlarmAlertActivity.java @@ -0,0 +1,238 @@ +/* + * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net) + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package net.micode.notes.ui; + +import android.app.Activity;/* +导入android包下的app子包里的Activity类，该类是activity组件的父类 +*/ +import android.app.AlertDialog;/* +导入android包下的app子包里的AlertDialog类，该类是实现界面警告对话框（提示框）的 +*/ +import android.content.Context;/* +导入android包下的content子包里的Context类，该类为抽象类，是所有组件的父类，一个实例组件即一个context对象 +*/ +import android.content.DialogInterface;/* +导入android包下的content子包里的DialogInterface接口，是Dialog的接口 +*/ +import android.content.DialogInterface.OnClickListener;/* +导入android包下的content子包里的DialogInterface接口的子接口OnClickListener，该接口是用于监听用户点击事件的 +*/ +import android.content.DialogInterface.OnDismissListener;/* +导入android包下的content子包里的DialogInterface接口的子接口OnDismissListener，该接口是监听用户取消对话框事件的 +*/ +import android.content.Intent;/* +导入Intent类，该类是intent对象的父类 +*/ +import android.media.AudioManager;/* +导入android包里的子包media里的AudioManager类，该类是手机的音频管理器，可以控制手机的声音、震动 +*/ +import android.media.MediaPlayer;/* +导入多媒体包里的多媒体播放器类MediaPlayer，用于播放音频、视频等 +*/ +import android.media.RingtoneManager;/* +导入多媒体包里的RingtoneManager类，该类是铃声管理器 +*/ +import android.net.Uri;/* +导入net包里的Uri抽象类，uri可以代表任何要操作的资源数据 +*/ +import android.os.Bundle;/* +导入os包里的Bundle类，该类用于在activity类之间通过intent传递数据，待传递的数据以键值对形式组合包含于bundle对象，bundle对象又包含 +于intent对象里 +*/ +import android.os.PowerManager;/* +导入os包里的PowerManager类，该类是电源管理器 +*/ +import android.provider.Settings;/* +导入Settings类，该类提供系统的设置等等 +*/ +import android.view.Window;/* +导入Window类，该类是窗口，是view树的载体，是view的管理者 +*/ +import android.view.WindowManager;/* +导入该接口，该接口是窗口管理器 +*/ + +import net.micode.notes.R;/* +导入软件包的R类，该类是自动生成的，包含应用的资源id，与资源引用有关 +*/ +import net.micode.notes.data.Notes;/* +导入net.micode.notes包里的子包data里的Notes类 +*/ +import net.micode.notes.tool.DataUtils;/* +导入net.micode.notes包里的子包tool里的DataUtils类 +*/ + +import java.io.IOException;/* +导入java io包的IOException类，输入输出检查异常类 +*/ + + +public class AlarmAlertActivity extends Activity implements OnClickListener, OnDismissListener { + /* 该类是activity类，继承自Activity父类，实现可视化界面，且实现了OnClickListener, OnDismissListener接口， + 可以监听用户点击，取消事件*/ + private long mNoteId; //便签id变量 + private String mSnippet;//字符串变量 + private static final int SNIPPET_PREW_MAX_LEN = 60;//静态不可修改的整形变量 + MediaPlayer mPlayer;//定义了一个MediaPlaye变量 + + @Override + protected void onCreate(Bundle savedInstanceState) {/* + onCreate（）方法是对父类的方法的重写，用于初始化activity对即界面，参数是bundle对象，传递数据的 + */ + super.onCreate(savedInstanceState);/* + 调用父类方法，初始化界面，绘制初始界面的，必须调用 + */ + requestWindowFeature(Window.FEATURE_NO_TITLE);/* + 该方法用于设置窗口的特征，当前参数的window类的变量，设置当前窗口无标题 + */ + final Window win = getWindow();/* + getWindow方法 获得当前界面的窗口对象，不可修改值 + */ + win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);/* + 该方法用于向window对象增加flags，显示逻辑，flags是windowManager类里的内部类LayoutParams的变量。 + 当前逻辑是锁屏时显示 + */ + + if (!isScreenOn()) { + win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON + | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON + | WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON + | WindowManager.LayoutParams.FLAG_LAYOUT_INSET_DECOR); + /* 屏幕不亮时，增加新的flags，显示逻辑*/ + } + + Intent intent = getIntent();/* + 通过getIntent方法 获得当前界面接受到的intent对象 + */ + + try { + mNoteId = Long.valueOf(intent.getData().getPathSegments().get(1));/* + getData（）方法是获得intent对象携带的数据的uri，getPathSegments()方法是将uri的第一个/的右部分转化为字符串类型的list， + 该语句作用为将接受到的intent对象的便签id数据赋值到mNoteId变量 + */ + mSnippet = DataUtils.getSnippetById(this.getContentResolver(), mNoteId);/* + 调用DataUtils类里的getSnippetById方法，给mSnippet赋值，getContentResolver（）用于获得当前activity界面的内容 + 解析器contentResolver，用于对其他activity共享的内容进行解析，内容解析器有增删改查等方法，对数据操作 + */ + mSnippet = mSnippet.length() > SNIPPET_PREW_MAX_LEN ? mSnippet.substring(0, + SNIPPET_PREW_MAX_LEN) + getResources().getString(R.string.notelist_string_info)/* + getResources()方法 获得Resources对象，用于引用资源，getString（资源id）方法 通过资源id引用字符串资源 + R.string.notelist_string_info 获得名为notelist_string_info的字符串的id + */ + : mSnippet; + } catch (IllegalArgumentException e) { + e.printStackTrace(); + return; + } + + mPlayer = new MediaPlayer();//实例化MediaPlayer类 + if (DataUtils.visibleInNoteDatabase(getContentResolver(), mNoteId, Notes.TYPE_NOTE)) { + /* 判断便签是否在便签数据库里，在则显示对话框，播放闹钟声音*/ + showActionDialog(); + playAlarmSound(); + } else { + finish();//关闭该activity打开的一切资源，finish后调用onDestory（）销毁该activity + } + } + + private boolean isScreenOn() { + PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);/* + getSystemService（）方法用于获得系统服务，比如当前是获得系统的电源管理器，通过context的字符串变量调用,再强制转化为owerManager + */ + return pm.isScreenOn();//判断屏幕是否亮 + } + + private void playAlarmSound() { + Uri url = RingtoneManager.getActualDefaultRingtoneUri(this, RingtoneManager.TYPE_ALARM);/* + 调用铃声管理器的getActualDefaultRingtoneUri方法，获得安卓默认的铃声资源URI + */ + + int silentModeStreams = Settings.System.getInt(getContentResolver(), + Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0);/* + getInt方法是获得系统设置中某些设置的值，比如当前是获得闹钟铃声音量的大小 + */ + + if ((silentModeStreams & (1 << AudioManager.STREAM_ALARM)) != 0) { + mPlayer.setAudioStreamType(silentModeStreams);/* + 设置音量流类型 + */ + } else { + mPlayer.setAudioStreamType(AudioManager.STREAM_ALARM); + } + try { + mPlayer.setDataSource(this, url);//设置播放的多媒体资源URI + mPlayer.prepare();//准备中 + mPlayer.setLooping(true);//设置是否一直循环播放 + mPlayer.start();//开始播放 + } catch (IllegalArgumentException e) { + // TODO Auto-generated catch block + e.printStackTrace(); + } catch (SecurityException e) { + // TODO Auto-generated catch block + e.printStackTrace(); + } catch (IllegalStateException e) { + // TODO Auto-generated catch block + e.printStackTrace(); + } catch (IOException e) { + // TODO Auto-generated catch block + e.printStackTrace(); + } + } + + private void showActionDialog() { + AlertDialog.Builder dialog = new AlertDialog.Builder(this);/* + AlertDialog类的构造方法受保护，只能通过内部类builder的构造方法来创建对话框 + */ + dialog.setTitle(R.string.app_name);//设置对话框标题 + dialog.setMessage(mSnippet);//设置对话框内容 + dialog.setPositiveButton(R.string.notealert_ok, this);//设置响应一般YES的按钮，按钮的标题为参数 + if (isScreenOn()) { + dialog.setNegativeButton(R.string.notealert_enter, this);//屏幕亮，设置一般响应取消的按钮 + } + dialog.show().setOnDismissListener(this);//显示对话框，并且设置一个监听用户取消对话框的监听器 + } + + public void onClick(DialogInterface dialog, int which) {/* + 该方法用于处理用户点击 + */ + switch (which) { + case DialogInterface.BUTTON_NEGATIVE://如果用户点击negative按钮 + Intent intent = new Intent(this, NoteEditActivity.class);/* + 创建一个显示intent，指定接受的组件为NoteEditActivity类 + */ + intent.setAction(Intent.ACTION_VIEW);//设置intent的action，接受的activity显示数据 + intent.putExtra(Intent.EXTRA_UID, mNoteId);//设置activity响应操作所需的额外的数据，是键值对 + startActivity(intent);//将intent对象传递给NoteEditActivity类 + break; + default: + break; + } + } + + public void onDismiss(DialogInterface dialog) { + stopAlarmSound(); + finish(); + }/*响应用户取消，停止播放闹钟，结束该activity调用的一切资源*/ + + private void stopAlarmSound() { + if (mPlayer != null) { + mPlayer.stop(); + mPlayer.release(); + mPlayer = null; + } + }/* 非空，停止播放，释放资源，置空*/ +} diff --git a/doc/向金成——精读代码/ui/AlarmInitReceiver.java b/doc/向金成——精读代码/ui/AlarmInitReceiver.java new file mode 100644 index 00000000..8c554330 --- /dev/null +++ b/doc/向金成——精读代码/ui/AlarmInitReceiver.java @@ -0,0 +1,80 @@ +/* + * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net) + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package net.micode.notes.ui; + +import android.app.AlarmManager; +import android.app.PendingIntent; +import android.content.BroadcastReceiver; +import android.content.ContentUris; +import android.content.Context; +import android.content.Intent; +import android.database.Cursor; + +import net.micode.notes.data.Notes; +import net.micode.notes.data.Notes.NoteColumns; + + +public class AlarmInitReceiver extends BroadcastReceiver { + + private static final String [] PROJECTION = new String [] { + NoteColumns.ID, + NoteColumns.ALERTED_DATE + };//定义了一个字符串数组 + + private static final int COLUMN_ID = 0;//一栏的id + private static final int COLUMN_ALERTED_DATE = 1;//一栏的闹钟响的日期 + + @Override + public void onReceive(Context context, Intent intent) {/* + 每个receiver类都必须重写父类Receiver的onReceive方法，对接收到的广播进行处理 + */ + long currentDate = System.currentTimeMillis();//获取当前时间，毫秒为单位 + Cursor c = context.getContentResolver().query(Notes.CONTENT_NOTE_URI,//URI代表数据库的中的某个表 + PROJECTION,//要查询的列 + NoteColumns.ALERTED_DATE + ">? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE,/* + where 后面的条件，？为占位符，selectionArgs参数替代占位符 + */ + new String[] { String.valueOf(currentDate) },//替代占位符的 + null);//order by 排序，当前null默认升序 + /* 内容解析器提供的query（查询）方法，会将参数转化为一条select语句，用于在数据库中进行操作，返回的结果，相当于游标的缓冲区， + cursor为指向每行的游标指针 + */ + + if (c != null) {//查询结果成功 + if (c.moveToFirst()) {//移动到第一行 + do { + long alertDate = c.getLong(COLUMN_ALERTED_DATE);//将COLUMN_ALERTED_DATE列的值转化为long赋值给变量 + Intent sender = new Intent(context, AlarmReceiver.class);//向AlarmReceiver类传递intent对象 + sender.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, c.getLong(COLUMN_ID)));/* + 设置sender对象的data的URI，向给定的URI路径末尾添加一个id,有id后的URI代表那个id指向的资源 + */ + PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, sender, 0);/* + 调用PendingIntent.getBroadcast方法，以获得一个PendingIntent对象，激发该对象时，该对象会启动一个它能启动组件， + 只能是activity，service，broadcast这3个组件，当前是创建了一个激发时能启动broadcast的对象，广播传递的intent + 是sender + */ + AlarmManager alermManager = (AlarmManager) context + .getSystemService(Context.ALARM_SERVICE);//通过系统服务来获得当前的闹钟管理器 + alermManager.set(AlarmManager.RTC_WAKEUP, alertDate, pendingIntent);/* + 设置闹钟，闹钟类型是使用现实时间的闹钟，会唤醒系统进行提示 响，设置了响的时间，响时会传递的消息 + */ + } while (c.moveToNext());//c指向下一行 + } + c.close();//关闭游标 + } + } +} diff --git a/doc/向金成——精读代码/ui/AlarmReceiver.java b/doc/向金成——精读代码/ui/AlarmReceiver.java new file mode 100644 index 00000000..d682fe50 --- /dev/null +++ b/doc/向金成——精读代码/ui/AlarmReceiver.java @@ -0,0 +1,32 @@ +/* + * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net) + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package net.micode.notes.ui; + +import android.content.BroadcastReceiver; +import android.content.Context; +import android.content.Intent; + +public class AlarmReceiver extends BroadcastReceiver { + @Override + public void onReceive(Context context, Intent intent) { + intent.setClass(context, AlarmAlertActivity.class);//将接受到的intent对象传给AlarmAlertActivity类 + intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);/* + 向intent添加flags以控制组件更加复杂的行为，当前是控制AlarmAlertActivity类新建一个任务栈来启动activity + */ + context.startActivity(intent);//启动activity，传递intent + } +} diff --git a/doc/向金成——精读代码/ui/DateTimePicker.java b/doc/向金成——精读代码/ui/DateTimePicker.java new file mode 100644 index 00000000..231b0cc2 --- /dev/null +++ b/doc/向金成——精读代码/ui/DateTimePicker.java @@ -0,0 +1,500 @@ +/* + * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net) + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package net.micode.notes.ui; + +import java.text.DateFormatSymbols; +import java.util.Calendar; + +import net.micode.notes.R; + + +import android.content.Context; +import android.text.format.DateFormat; +import android.view.View; +import android.widget.FrameLayout; +import android.widget.NumberPicker; + +public class DateTimePicker extends FrameLayout {/* + 该类用于用户选择闹钟响铃时间，继承自FrameLayout类，帧布局，任何view对象，都对齐左上角 + */ + + private static final boolean DEFAULT_ENABLE_STATE = true; + + private static final int HOURS_IN_HALF_DAY = 12; + private static final int HOURS_IN_ALL_DAY = 24; + private static final int DAYS_IN_ALL_WEEK = 7; + private static final int DATE_SPINNER_MIN_VAL = 0; + private static final int DATE_SPINNER_MAX_VAL = DAYS_IN_ALL_WEEK - 1; + private static final int HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW = 0; + private static final int HOUR_SPINNER_MAX_VAL_24_HOUR_VIEW = 23; + private static final int HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW = 1; + private static final int HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW = 12; + private static final int MINUT_SPINNER_MIN_VAL = 0; + private static final int MINUT_SPINNER_MAX_VAL = 59; + private static final int AMPM_SPINNER_MIN_VAL = 0; + private static final int AMPM_SPINNER_MAX_VAL = 1; + + private final NumberPicker mDateSpinner;//选择日期 + private final NumberPicker mHourSpinner;//选择时间 + private final NumberPicker mMinuteSpinner;//选择分钟 + private final NumberPicker mAmPmSpinner;//选择上下午 + /* + 定义了一个NumberPicker类变量，即声明了4个数字选择器控件 + */ + private Calendar mDate;//定义一个Calendar类对象，用于获取时间 + + private String[] mDateDisplayValues = new String[DAYS_IN_ALL_WEEK];//创建一个字符串数组显示日期的值，DAYS_IN_ALL_WEEK为值 + + private boolean mIsAm;//定义一个布尔类型变量，判断是否是上午 + + private boolean mIs24HourView; + + private boolean mIsEnabled = DEFAULT_ENABLE_STATE;//判断是否能够使用 + + private boolean mInitialising; + + private OnDateTimeChangedListener mOnDateTimeChangedListener; + + /* 实例化OnValueChangeListener，用于监听数组选择器值的改变,当前是创建一个监听日期变化的监听器 */ + private NumberPicker.OnValueChangeListener mOnDateChangedListener = new NumberPicker.OnValueChangeListener() { + @Override + //实例化时重写接口方法，该方法来响应值变化 + public void onValueChange(NumberPicker picker, int oldVal, int newVal) { + mDate.add(Calendar.DAY_OF_YEAR, newVal - oldVal);//mDate 日历添加日期 + updateDateControl();//更新 + onDateTimeChanged();//同步 + } + }; + + /* 创建一个监听小时变化的监听器*/ + private NumberPicker.OnValueChangeListener mOnHourChangedListener = new NumberPicker.OnValueChangeListener() { + @Override + public void onValueChange(NumberPicker picker, int oldVal, int newVal) { + boolean isDateChanged = false; + Calendar cal = Calendar.getInstance();//实例化一个calendar， + if (!mIs24HourView) {//不是24h制时间 + if (!mIsAm && oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY) { + cal.setTimeInMillis(mDate.getTimeInMillis());//获取ms单位的时间，并设置cal的时间 + cal.add(Calendar.DAY_OF_YEAR, 1);//增加日期 + isDateChanged = true;//下午11h、12h交替更改 + } else if (mIsAm && oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) { + cal.setTimeInMillis(mDate.getTimeInMillis()); + cal.add(Calendar.DAY_OF_YEAR, -1); + isDateChanged = true;//上午12点，11点交替的更改 + } + if (oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY || + oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) { + mIsAm = !mIsAm;//更改Am，am pm + updateAmPmControl(); + } + } else {//是24h时间 + if (oldVal == HOURS_IN_ALL_DAY - 1 && newVal == 0) { + cal.setTimeInMillis(mDate.getTimeInMillis()); + cal.add(Calendar.DAY_OF_YEAR, 1); + isDateChanged = true;//23点到0点的交替时，更改 + } else if (oldVal == 0 && newVal == HOURS_IN_ALL_DAY - 1) { + cal.setTimeInMillis(mDate.getTimeInMillis()); + cal.add(Calendar.DAY_OF_YEAR, -1); + isDateChanged = true;//0点到23点交替时更改 + } + } + int newHour = mHourSpinner.getValue() % HOURS_IN_HALF_DAY + (mIsAm ? 0 : HOURS_IN_HALF_DAY);/* + 更改hour，当am变到pm时 + */ + mDate.set(Calendar.HOUR_OF_DAY, newHour);//设置日期 + onDateTimeChanged();//同步 + if (isDateChanged) {//日期变化后，更改年、月。日 + setCurrentYear(cal.get(Calendar.YEAR)); + setCurrentMonth(cal.get(Calendar.MONTH)); + setCurrentDay(cal.get(Calendar.DAY_OF_MONTH)); + } + } + }; + + /* 创建一个监听min改变的监听器*/ + private NumberPicker.OnValueChangeListener mOnMinuteChangedListener = new NumberPicker.OnValueChangeListener() { + @Override + public void onValueChange(NumberPicker picker, int oldVal, int newVal) { + int minValue = mMinuteSpinner.getMinValue(); + int maxValue = mMinuteSpinner.getMaxValue();//获得数组选择器能选择的最大、最小值 + int offset = 0;//标志是否hour改变 + if (oldVal == maxValue && newVal == minValue) { + offset += 1;//hour+1 + } else if (oldVal == minValue && newVal == maxValue) { + offset -= 1;//hour-1 + } + if (offset != 0) {//hour改变 + mDate.add(Calendar.HOUR_OF_DAY, offset);//新增一个日期 + mHourSpinner.setValue(getCurrentHour());//获得当前hour值，设置mHourSpinner选择器的值 + updateDateControl(); + int newHour = getCurrentHourOfDay(); + if (newHour >= HOURS_IN_HALF_DAY) {//更改am、pm + mIsAm = false; + updateAmPmControl(); + } else { + mIsAm = true; + updateAmPmControl(); + } + } + mDate.set(Calendar.MINUTE, newVal);//修改date值 + onDateTimeChanged(); + } + }; + + /* 监听am、pm改变*/ + private NumberPicker.OnValueChangeListener mOnAmPmChangedListener = new NumberPicker.OnValueChangeListener() { + @Override + public void onValueChange(NumberPicker picker, int oldVal, int newVal) { + mIsAm = !mIsAm; + if (mIsAm) { + mDate.add(Calendar.HOUR_OF_DAY, -HOURS_IN_HALF_DAY); + } else { + mDate.add(Calendar.HOUR_OF_DAY, HOURS_IN_HALF_DAY); + } + updateAmPmControl(); + onDateTimeChanged(); + } + }; + + //监听data改变的监听器接口 + public interface OnDateTimeChangedListener { + void onDateTimeChanged(DateTimePicker view, int year, int month, + int dayOfMonth, int hourOfDay, int minute); + } + + public DateTimePicker(Context context) { + this(context, System.currentTimeMillis()); + }//通过当前时间构造 + + public DateTimePicker(Context context, long date) { + this(context, date, DateFormat.is24HourFormat(context));//是24小时制的选择器 + } + + public DateTimePicker(Context context, long date, boolean is24HourView) { + super(context); + mDate = Calendar.getInstance();//实例化calendar + mInitialising = true;//标志正在初始化 + mIsAm = getCurrentHourOfDay() >= HOURS_IN_HALF_DAY; + inflate(context, R.layout.datetime_picker, this);//将datetime_picker XML布局文件转化为view对象 + + mDateSpinner = (NumberPicker) findViewById(R.id.date);//将id为date的view实例化 + mDateSpinner.setMinValue(DATE_SPINNER_MIN_VAL);//设置可以选择的最小值 + mDateSpinner.setMaxValue(DATE_SPINNER_MAX_VAL);//设置可以选择的最大值 + mDateSpinner.setOnValueChangedListener(mOnDateChangedListener);//设置监听选择的值改变的监听器 + + mHourSpinner = (NumberPicker) findViewById(R.id.hour);//实例化用于选择hour的选择器 + mHourSpinner.setOnValueChangedListener(mOnHourChangedListener); + mMinuteSpinner = (NumberPicker) findViewById(R.id.minute); + mMinuteSpinner.setMinValue(MINUT_SPINNER_MIN_VAL); + mMinuteSpinner.setMaxValue(MINUT_SPINNER_MAX_VAL); + mMinuteSpinner.setOnLongPressUpdateInterval(100);//设置长按改变数值增加的量 + mMinuteSpinner.setOnValueChangedListener(mOnMinuteChangedListener); + + String[] stringsForAmPm = new DateFormatSymbols().getAmPmStrings();//返回表示上午下午格式的字符串 + mAmPmSpinner = (NumberPicker) findViewById(R.id.amPm);//实例化选择ampm的选择器 + mAmPmSpinner.setMinValue(AMPM_SPINNER_MIN_VAL); + mAmPmSpinner.setMaxValue(AMPM_SPINNER_MAX_VAL); + mAmPmSpinner.setDisplayedValues(stringsForAmPm);//设置显示的文本 + mAmPmSpinner.setOnValueChangedListener(mOnAmPmChangedListener); + + // update controls to initial state + updateDateControl(); + updateHourControl(); + updateAmPmControl(); + + set24HourView(is24HourView); + + // set to current time + setCurrentDate(date); + + setEnabled(isEnabled()); + + // set the content descriptions + mInitialising = false; + } + + @Override//设置能否使用 + public void setEnabled(boolean enabled) { + if (mIsEnabled == enabled) { + return; + } + super.setEnabled(enabled); + mDateSpinner.setEnabled(enabled); + mMinuteSpinner.setEnabled(enabled); + mHourSpinner.setEnabled(enabled); + mAmPmSpinner.setEnabled(enabled); + mIsEnabled = enabled; + } + + @Override + public boolean isEnabled() { + return mIsEnabled; + } + + /** + * Get the current date in millis + * + * @return the current date in millis + */ + public long getCurrentDateInTimeMillis() { + return mDate.getTimeInMillis(); + } + + /** + * Set the current date + * + * @param date The current date in millis + */ + public void setCurrentDate(long date) { + Calendar cal = Calendar.getInstance(); + cal.setTimeInMillis(date); + setCurrentDate(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH), + cal.get(Calendar.HOUR_OF_DAY), cal.get(Calendar.MINUTE)); + } + + /** + * Set the current date + * + * @param year The current year + * @param month The current month + * @param dayOfMonth The current dayOfMonth + * @param hourOfDay The current hourOfDay + * @param minute The current minute + */ + public void setCurrentDate(int year, int month, + int dayOfMonth, int hourOfDay, int minute) { + setCurrentYear(year); + setCurrentMonth(month); + setCurrentDay(dayOfMonth); + setCurrentHour(hourOfDay); + setCurrentMinute(minute); + } + + /** + * Get current year + * + * @return The current year + */ + public int getCurrentYear() { + return mDate.get(Calendar.YEAR); + } + + /** + * Set current year + * + * @param year The current year + */ + public void setCurrentYear(int year) { + if (!mInitialising && year == getCurrentYear()) { + return; + } + mDate.set(Calendar.YEAR, year); + updateDateControl(); + onDateTimeChanged(); + } + + /** + * Get current month in the year + * + * @return The current month in the year + */ + public int getCurrentMonth() { + return mDate.get(Calendar.MONTH); + } + + /** + * Set current month in the year + * + * @param month The month in the year + */ + public void setCurrentMonth(int month) { + if (!mInitialising && month == getCurrentMonth()) { + return; + } + mDate.set(Calendar.MONTH, month); + updateDateControl(); + onDateTimeChanged(); + } + + /** + * Get current day of the month + * + * @return The day of the month + */ + public int getCurrentDay() { + return mDate.get(Calendar.DAY_OF_MONTH); + } + + /** + * Set current day of the month + * + * @param dayOfMonth The day of the month + */ + public void setCurrentDay(int dayOfMonth) { + if (!mInitialising && dayOfMonth == getCurrentDay()) { + return; + } + mDate.set(Calendar.DAY_OF_MONTH, dayOfMonth); + updateDateControl(); + onDateTimeChanged(); + } + + /** + * Get current hour in 24 hour mode, in the range (0~23) + * @return The current hour in 24 hour mode + */ + public int getCurrentHourOfDay() { + return mDate.get(Calendar.HOUR_OF_DAY); + } + + private int getCurrentHour() { + if (mIs24HourView){ + return getCurrentHourOfDay(); + } else { + int hour = getCurrentHourOfDay(); + if (hour > HOURS_IN_HALF_DAY) { + return hour - HOURS_IN_HALF_DAY; + } else { + return hour == 0 ? HOURS_IN_HALF_DAY : hour; + } + } + } + + /** + * Set current hour in 24 hour mode, in the range (0~23) + * + * @param hourOfDay + */ + public void setCurrentHour(int hourOfDay) { + if (!mInitialising && hourOfDay == getCurrentHourOfDay()) { + return; + } + mDate.set(Calendar.HOUR_OF_DAY, hourOfDay); + if (!mIs24HourView) { + if (hourOfDay >= HOURS_IN_HALF_DAY) { + mIsAm = false; + if (hourOfDay > HOURS_IN_HALF_DAY) { + hourOfDay -= HOURS_IN_HALF_DAY; + } + } else { + mIsAm = true; + if (hourOfDay == 0) { + hourOfDay = HOURS_IN_HALF_DAY; + } + } + updateAmPmControl(); + } + mHourSpinner.setValue(hourOfDay); + onDateTimeChanged(); + } + + /** + * Get currentMinute + * + * @return The Current Minute + */ + public int getCurrentMinute() { + return mDate.get(Calendar.MINUTE); + } + + /** + * Set current minute + */ + public void setCurrentMinute(int minute) { + if (!mInitialising && minute == getCurrentMinute()) { + return; + } + mMinuteSpinner.setValue(minute); + mDate.set(Calendar.MINUTE, minute); + onDateTimeChanged(); + } + + /** + * @return true if this is in 24 hour view else false. + */ + public boolean is24HourView () { + return mIs24HourView; + } + + /** + * Set whether in 24 hour or AM/PM mode. + * + * @param is24HourView True for 24 hour mode. False for AM/PM mode. + */ + public void set24HourView(boolean is24HourView) { + if (mIs24HourView == is24HourView) { + return; + } + mIs24HourView = is24HourView; + mAmPmSpinner.setVisibility(is24HourView ? View.GONE : View.VISIBLE); + int hour = getCurrentHourOfDay(); + updateHourControl(); + setCurrentHour(hour); + updateAmPmControl(); + } + + //以下都是控制日期，小时，ampm转化的 + private void updateDateControl() { + Calendar cal = Calendar.getInstance(); + cal.setTimeInMillis(mDate.getTimeInMillis()); + cal.add(Calendar.DAY_OF_YEAR, -DAYS_IN_ALL_WEEK / 2 - 1); + mDateSpinner.setDisplayedValues(null); + for (int i = 0; i < DAYS_IN_ALL_WEEK; ++i) { + cal.add(Calendar.DAY_OF_YEAR, 1); + mDateDisplayValues[i] = (String) DateFormat.format("MM.dd EEEE", cal); + } + mDateSpinner.setDisplayedValues(mDateDisplayValues); + mDateSpinner.setValue(DAYS_IN_ALL_WEEK / 2); + mDateSpinner.invalidate(); + } + + private void updateAmPmControl() { + if (mIs24HourView) { + mAmPmSpinner.setVisibility(View.GONE); + } else { + int index = mIsAm ? Calendar.AM : Calendar.PM; + mAmPmSpinner.setValue(index); + mAmPmSpinner.setVisibility(View.VISIBLE); + } + } + + private void updateHourControl() { + if (mIs24HourView) { + mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW); + mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_24_HOUR_VIEW); + } else { + mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW); + mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW); + } + } + + /** + * Set the callback that indicates the 'Set' button has been pressed. + * @param callback the callback, if null will do nothing + */ + public void setOnDateTimeChangedListener(OnDateTimeChangedListener callback) { + mOnDateTimeChangedListener = callback; + } + + //响应日期改变 + private void onDateTimeChanged() { + if (mOnDateTimeChangedListener != null) { + mOnDateTimeChangedListener.onDateTimeChanged(this, getCurrentYear(), + getCurrentMonth(), getCurrentDay(), getCurrentHourOfDay(), getCurrentMinute()); + } + } +} diff --git a/doc/向金成——精读代码/ui/DateTimePickerDialog.java b/doc/向金成——精读代码/ui/DateTimePickerDialog.java new file mode 100644 index 00000000..548cbe15 --- /dev/null +++ b/doc/向金成——精读代码/ui/DateTimePickerDialog.java @@ -0,0 +1,92 @@ +/* + * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net) + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package net.micode.notes.ui; + +import java.util.Calendar; + +import net.micode.notes.R; +import net.micode.notes.ui.DateTimePicker; +import net.micode.notes.ui.DateTimePicker.OnDateTimeChangedListener; + +import android.app.AlertDialog; +import android.content.Context; +import android.content.DialogInterface; +import android.content.DialogInterface.OnClickListener; +import android.text.format.DateFormat; +import android.text.format.DateUtils; + +public class DateTimePickerDialog extends AlertDialog implements OnClickListener { + + private Calendar mDate = Calendar.getInstance();//calendar变量便于时间操作 + private boolean mIs24HourView; + private OnDateTimeSetListener mOnDateTimeSetListener;//监听用户设置时间 + private DateTimePicker mDateTimePicker;//view对象，选择器 + + public interface OnDateTimeSetListener { + void OnDateTimeSet(AlertDialog dialog, long date); + } + + public DateTimePickerDialog(Context context, long date) { + super(context);//实例化 + mDateTimePicker = new DateTimePicker(context); + setView(mDateTimePicker);//添加视图 + mDateTimePicker.setOnDateTimeChangedListener(new OnDateTimeChangedListener() { + public void onDateTimeChanged(DateTimePicker view, int year, int month, + int dayOfMonth, int hourOfDay, int minute) { + mDate.set(Calendar.YEAR, year); + mDate.set(Calendar.MONTH, month); + mDate.set(Calendar.DAY_OF_MONTH, dayOfMonth); + mDate.set(Calendar.HOUR_OF_DAY, hourOfDay); + mDate.set(Calendar.MINUTE, minute);//设置当前时间 + updateTitle(mDate.getTimeInMillis()); + } + });//向选择时间的选择器设置监听时间改变的监听器 + mDate.setTimeInMillis(date);//设置时间毫秒单位 + mDate.set(Calendar.SECOND, 0);//秒数设置为0 + mDateTimePicker.setCurrentDate(mDate.getTimeInMillis());//选择器设置当前时间 + setButton(context.getString(R.string.datetime_dialog_ok), this);//设置按钮 + setButton2(context.getString(R.string.datetime_dialog_cancel), (OnClickListener)null);//设置按钮 + set24HourView(DateFormat.is24HourFormat(this.getContext()));//设置日期是24小时制 + updateTitle(mDate.getTimeInMillis());//更新显示日期 + } + + public void set24HourView(boolean is24HourView) { + mIs24HourView = is24HourView; + } + + public void setOnDateTimeSetListener(OnDateTimeSetListener callBack) { + mOnDateTimeSetListener = callBack; + } + + //用于格式日期显示 + private void updateTitle(long date) { + int flag = + DateUtils.FORMAT_SHOW_YEAR | + DateUtils.FORMAT_SHOW_DATE | + DateUtils.FORMAT_SHOW_TIME; + flag |= mIs24HourView ? DateUtils.FORMAT_24HOUR : DateUtils.FORMAT_24HOUR;//DateUtils类日期格式工具类 + setTitle(DateUtils.formatDateTime(this.getContext(), date, flag)); + } + + //响应用户点击设置按钮 + public void onClick(DialogInterface arg0, int arg1) { + if (mOnDateTimeSetListener != null) { + mOnDateTimeSetListener.OnDateTimeSet(this, mDate.getTimeInMillis()); + } + } + +} \ No newline at end of file diff --git a/doc/向金成——精读代码/ui/DropdownMenu.java b/doc/向金成——精读代码/ui/DropdownMenu.java new file mode 100644 index 00000000..670aa0fa --- /dev/null +++ b/doc/向金成——精读代码/ui/DropdownMenu.java @@ -0,0 +1,65 @@ +/* + * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net) + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package net.micode.notes.ui; + +import android.content.Context; +import android.view.Menu; +import android.view.MenuItem; +import android.view.View; +import android.view.View.OnClickListener; +import android.widget.Button; +import android.widget.PopupMenu; +import android.widget.PopupMenu.OnMenuItemClickListener; + +import net.micode.notes.R; + +public class DropdownMenu { + private Button mButton; + private PopupMenu mPopupMenu;//下拉菜单 + private Menu mMenu; + + //响应用户下拉菜单 + public DropdownMenu(Context context, Button button, int menuId) { + mButton = button; + mButton.setBackgroundResource(R.drawable.dropdown_icon);//设置背景 + mPopupMenu = new PopupMenu(context, mButton);//mButton代表下拉菜单要通过点击mButton来打开 + mMenu = mPopupMenu.getMenu(); + mPopupMenu.getMenuInflater().inflate(menuId, mMenu);//获取布局文件 + mButton.setOnClickListener(new OnClickListener() { + public void onClick(View v) { + mPopupMenu.show(); + } + });//监听用户点击 + } + + //设置监听下拉菜单中选项被选中的监听器 + public void setOnDropdownMenuItemClickListener(OnMenuItemClickListener listener) { + if (mPopupMenu != null) { + mPopupMenu.setOnMenuItemClickListener(listener); + } + } + + //查找菜单中的项 + public MenuItem findItem(int id) { + return mMenu.findItem(id); + } + + //设置按钮的显示文本 + public void setTitle(CharSequence title) { + mButton.setText(title); + } +} diff --git a/doc/向金成——精读代码/ui/FoldersListAdapter.java b/doc/向金成——精读代码/ui/FoldersListAdapter.java new file mode 100644 index 00000000..3fb33d80 --- /dev/null +++ b/doc/向金成——精读代码/ui/FoldersListAdapter.java @@ -0,0 +1,86 @@ +/* + * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net) + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package net.micode.notes.ui; + +import android.content.Context; +import android.database.Cursor; +import android.view.View; +import android.view.ViewGroup; +import android.widget.CursorAdapter; +import android.widget.LinearLayout; +import android.widget.TextView; + +import net.micode.notes.R; +import net.micode.notes.data.Notes; +import net.micode.notes.data.Notes.NoteColumns; + + +public class FoldersListAdapter extends CursorAdapter { + /* CursorAdapter类 是用于 cursor和listview的连接*/ + public static final String [] PROJECTION = { + NoteColumns.ID, + NoteColumns.SNIPPET + };//要显示的数据库的列 + + public static final int ID_COLUMN = 0; + public static final int NAME_COLUMN = 1; + + public FoldersListAdapter(Context context, Cursor c) { + super(context, c); + // TODO Auto-generated constructor stub + } + + @Override + public View newView(Context context, Cursor cursor, ViewGroup parent) { + return new FolderListItem(context); + }//在文件夹列表中创建一个新的项，即一个新的文件夹 + + @Override + //如果view是文件夹列表中的一个项，设置view的名字 + public void bindView(View view, Context context, Cursor cursor) { + if (view instanceof FolderListItem) { + String folderName = (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ? context + .getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN);//判断设置什么名字 + ((FolderListItem) view).bind(folderName); + } + } + + //获得文件夹名 + public String getFolderName(Context context, int position) { + Cursor cursor = (Cursor) getItem(position); + return (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ? context + .getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN); + } + + //创建一个类用于文件夹列表中的项 + private class FolderListItem extends LinearLayout { + private TextView mName; + + //绘制项 + public FolderListItem(Context context) { + super(context); + inflate(context, R.layout.folder_list_item, this);//实例化布局文件 + mName = (TextView) findViewById(R.id.tv_folder_name);//获得名字 + } + + //设置文本 + public void bind(String name) { + mName.setText(name); + } + } + +} diff --git a/doc/向金成——精读代码/ui/NoteEditActivity.java b/doc/向金成——精读代码/ui/NoteEditActivity.java new file mode 100644 index 00000000..e6bffe1c --- /dev/null +++ b/doc/向金成——精读代码/ui/NoteEditActivity.java @@ -0,0 +1,912 @@ +/* + * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net) + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package net.micode.notes.ui; + +import android.app.Activity; +import android.app.AlarmManager; +import android.app.AlertDialog; +import android.app.PendingIntent; +import android.app.SearchManager; +import android.appwidget.AppWidgetManager; +import android.content.ContentUris; +import android.content.Context; +import android.content.DialogInterface; +import android.content.Intent; +import android.content.SharedPreferences; +import android.graphics.Paint; +import android.os.Bundle; +import android.preference.PreferenceManager; +import android.text.Spannable; +import android.text.SpannableString; +import android.text.TextUtils; +import android.text.format.DateUtils; +import android.text.style.BackgroundColorSpan; +import android.util.Log; +import android.view.LayoutInflater; +import android.view.Menu; +import android.view.MenuItem; +import android.view.MotionEvent; +import android.view.View; +import android.view.View.OnClickListener; +import android.view.WindowManager; +import android.widget.CheckBox; +import android.widget.CompoundButton; +import android.widget.CompoundButton.OnCheckedChangeListener; +import android.widget.EditText; +import android.widget.ImageView; +import android.widget.LinearLayout; +import android.widget.TextView; +import android.widget.Toast; + +import net.micode.notes.R; +import net.micode.notes.data.Notes; +import net.micode.notes.data.Notes.TextNote; +import net.micode.notes.model.WorkingNote; +import net.micode.notes.model.WorkingNote.NoteSettingChangedListener; +import net.micode.notes.tool.DataUtils; +import net.micode.notes.tool.ResourceParser; +import net.micode.notes.tool.ResourceParser.TextAppearanceResources; +import net.micode.notes.ui.DateTimePickerDialog.OnDateTimeSetListener; +import net.micode.notes.ui.NoteEditText.OnTextViewChangeListener; +import net.micode.notes.widget.NoteWidgetProvider_2x; +import net.micode.notes.widget.NoteWidgetProvider_4x; + +import java.util.HashMap; +import java.util.HashSet; +import java.util.Map; +import java.util.regex.Matcher; +import java.util.regex.Pattern; + + +public class NoteEditActivity extends Activity implements OnClickListener, + NoteSettingChangedListener, OnTextViewChangeListener { + private class HeadViewHolder { + public TextView tvModified; + + public ImageView ivAlertIcon; + + public TextView tvAlertDate; + + public ImageView ibSetBgColor; + } + + private static final Map sBgSelectorBtnsMap = new HashMap();//存储资源 + static { + sBgSelectorBtnsMap.put(R.id.iv_bg_yellow, ResourceParser.YELLOW); + sBgSelectorBtnsMap.put(R.id.iv_bg_red, ResourceParser.RED); + sBgSelectorBtnsMap.put(R.id.iv_bg_blue, ResourceParser.BLUE); + sBgSelectorBtnsMap.put(R.id.iv_bg_green, ResourceParser.GREEN); + sBgSelectorBtnsMap.put(R.id.iv_bg_white, ResourceParser.WHITE); + }//存储资源id和对应资源 + + private static final Map sBgSelectorSelectionMap = new HashMap(); + static { + sBgSelectorSelectionMap.put(ResourceParser.YELLOW, R.id.iv_bg_yellow_select); + sBgSelectorSelectionMap.put(ResourceParser.RED, R.id.iv_bg_red_select); + sBgSelectorSelectionMap.put(ResourceParser.BLUE, R.id.iv_bg_blue_select); + sBgSelectorSelectionMap.put(ResourceParser.GREEN, R.id.iv_bg_green_select); + sBgSelectorSelectionMap.put(ResourceParser.WHITE, R.id.iv_bg_white_select); + } + + private static final Map sFontSizeBtnsMap = new HashMap(); + static { + sFontSizeBtnsMap.put(R.id.ll_font_large, ResourceParser.TEXT_LARGE); + sFontSizeBtnsMap.put(R.id.ll_font_small, ResourceParser.TEXT_SMALL); + sFontSizeBtnsMap.put(R.id.ll_font_normal, ResourceParser.TEXT_MEDIUM); + sFontSizeBtnsMap.put(R.id.ll_font_super, ResourceParser.TEXT_SUPER); + } + + private static final Map sFontSelectorSelectionMap = new HashMap(); + static { + sFontSelectorSelectionMap.put(ResourceParser.TEXT_LARGE, R.id.iv_large_select); + sFontSelectorSelectionMap.put(ResourceParser.TEXT_SMALL, R.id.iv_small_select); + sFontSelectorSelectionMap.put(ResourceParser.TEXT_MEDIUM, R.id.iv_medium_select); + sFontSelectorSelectionMap.put(ResourceParser.TEXT_SUPER, R.id.iv_super_select); + }//以上都是①map存储数据 + + private static final String TAG = "NoteEditActivity"; + + private HeadViewHolder mNoteHeaderHolder; + + private View mHeadViewPanel;//声明一个view对象，用于第一个显示 + + private View mNoteBgColorSelector;//用于便签颜色选择的view + + private View mFontSizeSelector;//用于设置字体对象的view + + private EditText mNoteEditor;//用于文本编辑的v控件 + + private View mNoteEditorPanel;//用于文本编辑的面板 view + + private WorkingNote mWorkingNote;//初始化便签 + + private SharedPreferences mSharedPrefs;//声明了SharedPreferences类，数据存储类 + private int mFontSizeId; + + private static final String PREFERENCE_FONT_SIZE = "pref_font_size"; + + private static final int SHORTCUT_ICON_TITLE_MAX_LEN = 10; + + public static final String TAG_CHECKED = String.valueOf('\u221A'); + public static final String TAG_UNCHECKED = String.valueOf('\u25A1'); + + private LinearLayout mEditTextList;//声明了一个线性布局 + + private String mUserQuery; + private Pattern mPattern; + + //绘制界面 + @Override + protected void onCreate(Bundle savedInstanceState) { + super.onCreate(savedInstanceState); + this.setContentView(R.layout.note_edit); + + if (savedInstanceState == null && !initActivityState(getIntent())) { + finish(); + return; + } + initResources(); + } + + /** + * Current activity may be killed when the memory is low. Once it is killed, for another time + * user load this activity, we should restore the former state + */ + //通过保存的activity信息，来恢复一个activity + @Override + protected void onRestoreInstanceState(Bundle savedInstanceState) { + super.onRestoreInstanceState(savedInstanceState); + if (savedInstanceState != null && savedInstanceState.containsKey(Intent.EXTRA_UID)) { + Intent intent = new Intent(Intent.ACTION_VIEW); + intent.putExtra(Intent.EXTRA_UID, savedInstanceState.getLong(Intent.EXTRA_UID)); + if (!initActivityState(intent)) { + finish(); + return; + } + Log.d(TAG, "Restoring from killed activity"); + } + } + + private boolean initActivityState(Intent intent) { + /** + * If the user specified the {@link Intent#ACTION_VIEW} but not provided with id, + * then jump to the NotesListActivity + */ + mWorkingNote = null; + if (TextUtils.equals(Intent.ACTION_VIEW, intent.getAction())) { //如果intent动作为显示的话，即显示便签 + long noteId = intent.getLongExtra(Intent.EXTRA_UID, 0); + mUserQuery = ""; + /** + * Starting from the searched result + */ + //如果有数据键的话，根据键查便签id + if (intent.hasExtra(SearchManager.EXTRA_DATA_KEY)) { + noteId = Long.parseLong(intent.getStringExtra(SearchManager.EXTRA_DATA_KEY)); + mUserQuery = intent.getStringExtra(SearchManager.USER_QUERY); + } + + //在数据库中无id + if (!DataUtils.visibleInNoteDatabase(getContentResolver(), noteId, Notes.TYPE_NOTE)) { + Intent jump = new Intent(this, NotesListActivity.class); + startActivity(jump); + showToast(R.string.error_note_not_exist);//显示便签不存在 + finish(); + return false; + } else {//在数据库中有id + mWorkingNote = WorkingNote.load(this, noteId);//加载id + if (mWorkingNote == null) { + Log.e(TAG, "load note failed with note id" + noteId); + finish(); + return false;//初始化便签失败，打印错误信息 + } + } + getWindow().setSoftInputMode( + WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN + | WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);/* + 给当前窗口设置软键盘模式 + */ + } else if(TextUtils.equals(Intent.ACTION_INSERT_OR_EDIT, intent.getAction())) { + //接受的intent的action是ACTION_INSERT_OR_EDIT，编辑便签 + // New note + long folderId = intent.getLongExtra(Notes.INTENT_EXTRA_FOLDER_ID, 0); + int widgetId = intent.getIntExtra(Notes.INTENT_EXTRA_WIDGET_ID, + AppWidgetManager.INVALID_APPWIDGET_ID); + int widgetType = intent.getIntExtra(Notes.INTENT_EXTRA_WIDGET_TYPE, + Notes.TYPE_WIDGET_INVALIDE); + int bgResId = intent.getIntExtra(Notes.INTENT_EXTRA_BACKGROUND_ID, + ResourceParser.getDefaultBgId(this)); + //获得intent中携带的数据 + + // Parse call-record note + String phoneNumber = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER); + long callDate = intent.getLongExtra(Notes.INTENT_EXTRA_CALL_DATE, 0); + if (callDate != 0 && phoneNumber != null) {//intent中有电话号码，calldate + if (TextUtils.isEmpty(phoneNumber)) {//如果未记录电话号 + Log.w(TAG, "The call record number is null"); + } + long noteId = 0; + if ((noteId = DataUtils.getNoteIdByPhoneNumberAndCallDate(getContentResolver(), + phoneNumber, callDate)) > 0) {//如果根据电话号码有id + mWorkingNote = WorkingNote.load(this, noteId); + if (mWorkingNote == null) { + Log.e(TAG, "load call note failed with note id" + noteId); + finish(); + return false; + } + } else {//没有则创建新的便签，电话号给电话簿 + mWorkingNote = WorkingNote.createEmptyNote(this, folderId, widgetId, + widgetType, bgResId); + mWorkingNote.convertToCallNote(phoneNumber, callDate); + } + } else {//没有电话号则创建空的便签 + mWorkingNote = WorkingNote.createEmptyNote(this, folderId, widgetId, widgetType, + bgResId); + } + + getWindow().setSoftInputMode( + WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE + | WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE); + } else {//不是显示便签也不是编辑便签，报错 + Log.e(TAG, "Intent not specified action, should not support"); + finish(); + return false; + } + mWorkingNote.setOnSettingStatusChangedListener(this); + return true; + } + + //恢复activity，启动 + @Override + protected void onResume() { + super.onResume(); + initNoteScreen(); + } + + //初始化便签界面 + private void initNoteScreen() { + //设置文本外观 + mNoteEditor.setTextAppearance(this, TextAppearanceResources + .getTexAppearanceResource(mFontSizeId)); + if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) { + switchToListMode(mWorkingNote.getContent()); + } else { + mNoteEditor.setText(getHighlightQueryResult(mWorkingNote.getContent(), mUserQuery)); + mNoteEditor.setSelection(mNoteEditor.getText().length()); + } + for (Integer id : sBgSelectorSelectionMap.keySet()) { + findViewById(sBgSelectorSelectionMap.get(id)).setVisibility(View.GONE); + } + mHeadViewPanel.setBackgroundResource(mWorkingNote.getTitleBgResId()); + mNoteEditorPanel.setBackgroundResource(mWorkingNote.getBgColorResId()); + + mNoteHeaderHolder.tvModified.setText(DateUtils.formatDateTime(this, + mWorkingNote.getModifiedDate(), DateUtils.FORMAT_SHOW_DATE + | DateUtils.FORMAT_NUMERIC_DATE | DateUtils.FORMAT_SHOW_TIME + | DateUtils.FORMAT_SHOW_YEAR)); + + /** + * TODO: Add the menu for setting alert. Currently disable it because the DateTimePicker + * is not ready + */ + showAlertHeader(); + } + + //设置闹钟 + private void showAlertHeader() { + if (mWorkingNote.hasClockAlert()) {//便签设置了闹钟 + long time = System.currentTimeMillis(); + if (time > mWorkingNote.getAlertDate()) {//系统时间大于设置的闹钟时间 + mNoteHeaderHolder.tvAlertDate.setText(R.string.note_alert_expired); + } else { + mNoteHeaderHolder.tvAlertDate.setText(DateUtils.getRelativeTimeSpanString( + mWorkingNote.getAlertDate(), time, DateUtils.MINUTE_IN_MILLIS)); + } + mNoteHeaderHolder.tvAlertDate.setVisibility(View.VISIBLE); + mNoteHeaderHolder.ivAlertIcon.setVisibility(View.VISIBLE);//设置闹钟图标，可见 + } else {//未设置闹钟图标，设置闹钟日期，图标过期 + mNoteHeaderHolder.tvAlertDate.setVisibility(View.GONE); + mNoteHeaderHolder.ivAlertIcon.setVisibility(View.GONE); + }; + } + + @Override + protected void onNewIntent(Intent intent) {//当前activity再次被调用且一个实例在栈顶，通过onNewIntent方法接受intent + super.onNewIntent(intent); + initActivityState(intent); + } + + //activity被销毁前，储存当前activity信息 + @Override + protected void onSaveInstanceState(Bundle outState) {//离开界面时保存的数据 + super.onSaveInstanceState(outState); + /** + * For new note without note id, we should firstly save it to + * generate a id. If the editing note is not worth saving, there + * is no id which is equivalent to create new note + */ + if (!mWorkingNote.existInDatabase()) {//便签不在数据库进行保存 + saveNote(); + } + outState.putLong(Intent.EXTRA_UID, mWorkingNote.getNoteId()); + Log.d(TAG, "Save working note id: " + mWorkingNote.getNoteId() + " onSaveInstanceState"); + } + + @Override//分发触屏事件 + public boolean dispatchTouchEvent(MotionEvent ev) { + if (mNoteBgColorSelector.getVisibility() == View.VISIBLE + && !inRangeOfView(mNoteBgColorSelector, ev)) { + mNoteBgColorSelector.setVisibility(View.GONE); + return true; + }//设置颜色选择器 + + if (mFontSizeSelector.getVisibility() == View.VISIBLE + && !inRangeOfView(mFontSizeSelector, ev)) { + mFontSizeSelector.setVisibility(View.GONE); + return true; + }//设置字体大小选择器 + return super.dispatchTouchEvent(ev); + } + + private boolean inRangeOfView(View view, MotionEvent ev) { + int []location = new int[2]; + view.getLocationOnScreen(location); + int x = location[0]; + int y = location[1]; + if (ev.getX() < x + || ev.getX() > (x + view.getWidth()) + || ev.getY() < y + || ev.getY() > (y + view.getHeight())) { + return false; + }//如果触摸坐标位置超出view，返回false + return true; + } + + private void initResources() { + mHeadViewPanel = findViewById(R.id.note_title); + mNoteHeaderHolder = new HeadViewHolder(); + mNoteHeaderHolder.tvModified = (TextView) findViewById(R.id.tv_modified_date); + mNoteHeaderHolder.ivAlertIcon = (ImageView) findViewById(R.id.iv_alert_icon); + mNoteHeaderHolder.tvAlertDate = (TextView) findViewById(R.id.tv_alert_date); + mNoteHeaderHolder.ibSetBgColor = (ImageView) findViewById(R.id.btn_set_bg_color); + mNoteHeaderHolder.ibSetBgColor.setOnClickListener(this); + mNoteEditor = (EditText) findViewById(R.id.note_edit_view); + mNoteEditorPanel = findViewById(R.id.sv_note_edit); + mNoteBgColorSelector = findViewById(R.id.note_bg_color_selector); + for (int id : sBgSelectorBtnsMap.keySet()) { + ImageView iv = (ImageView) findViewById(id); + iv.setOnClickListener(this);//设置颜色选择器的显示view和监听器 + }//对开头声明的变量的初始化，初始化布局等 + + mFontSizeSelector = findViewById(R.id.font_size_selector); + for (int id : sFontSizeBtnsMap.keySet()) { + View view = findViewById(id); + view.setOnClickListener(this);//设置字体大小选择器的各字体的view和监听器 + }; + mSharedPrefs = PreferenceManager.getDefaultSharedPreferences(this); + mFontSizeId = mSharedPrefs.getInt(PREFERENCE_FONT_SIZE, ResourceParser.BG_DEFAULT_FONT_SIZE);//获得默认字体大小id + /** + * HACKME: Fix bug of store the resource id in shared preference. + * The id may larger than the length of resources, in this case, + * return the {@link ResourceParser#BG_DEFAULT_FONT_SIZE} + */ + if(mFontSizeId >= TextAppearanceResources.getResourcesSize()) {//默认字体大小id超出范围，进行更改 + mFontSizeId = ResourceParser.BG_DEFAULT_FONT_SIZE; + } + mEditTextList = (LinearLayout) findViewById(R.id.note_edit_list);//实例化布局 + } + + //暂停activity，淡出 + @Override + protected void onPause() { + super.onPause(); + if(saveNote()) { + Log.d(TAG, "Note data was saved with length:" + mWorkingNote.getContent().length()); + } + clearSettingState(); + } + + //更新桌面挂件，进行同步 + private void updateWidget() { + Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE); + if (mWorkingNote.getWidgetType() == Notes.TYPE_WIDGET_2X) { + intent.setClass(this, NoteWidgetProvider_2x.class); + } else if (mWorkingNote.getWidgetType() == Notes.TYPE_WIDGET_4X) { + intent.setClass(this, NoteWidgetProvider_4x.class); + } else { + Log.e(TAG, "Unspported widget type"); + return; + } + + intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, new int[] { + mWorkingNote.getWidgetId() + }); + + sendBroadcast(intent); + setResult(RESULT_OK, intent); + } + + //响应用户对view对象的点击，颜色字体大小选择器 + public void onClick(View v) { + int id = v.getId(); + if (id == R.id.btn_set_bg_color) { + mNoteBgColorSelector.setVisibility(View.VISIBLE); + findViewById(sBgSelectorSelectionMap.get(mWorkingNote.getBgColorId())).setVisibility( + - View.VISIBLE); + } else if (sBgSelectorBtnsMap.containsKey(id)) { + findViewById(sBgSelectorSelectionMap.get(mWorkingNote.getBgColorId())).setVisibility( + View.GONE); + mWorkingNote.setBgColorId(sBgSelectorBtnsMap.get(id)); + mNoteBgColorSelector.setVisibility(View.GONE); + } else if (sFontSizeBtnsMap.containsKey(id)) { + findViewById(sFontSelectorSelectionMap.get(mFontSizeId)).setVisibility(View.GONE); + mFontSizeId = sFontSizeBtnsMap.get(id); + mSharedPrefs.edit().putInt(PREFERENCE_FONT_SIZE, mFontSizeId).commit(); + findViewById(sFontSelectorSelectionMap.get(mFontSizeId)).setVisibility(View.VISIBLE); + if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) { + getWorkingText(); + switchToListMode(mWorkingNote.getContent()); + } else { + mNoteEditor.setTextAppearance(this, + TextAppearanceResources.getTexAppearanceResource(mFontSizeId)); + } + mFontSizeSelector.setVisibility(View.GONE); + } + } + + //响应用户点击back按键 + @Override + public void onBackPressed() { + if(clearSettingState()) { + return; + } + + saveNote(); + super.onBackPressed(); + } + + //响应back前先清空设置 + private boolean clearSettingState() { + if (mNoteBgColorSelector.getVisibility() == View.VISIBLE) { + mNoteBgColorSelector.setVisibility(View.GONE); + return true; + } else if (mFontSizeSelector.getVisibility() == View.VISIBLE) { + mFontSizeSelector.setVisibility(View.GONE); + return true; + } + return false; + } + + //响应便签背景颜色改变，当用户通过颜色选择器选择颜色 + public void onBackgroundColorChanged() { + findViewById(sBgSelectorSelectionMap.get(mWorkingNote.getBgColorId())).setVisibility( + View.VISIBLE); + mNoteEditorPanel.setBackgroundResource(mWorkingNote.getBgColorResId()); + mHeadViewPanel.setBackgroundResource(mWorkingNote.getTitleBgResId()); + } + + //准备选择菜单 + @Override + public boolean onPrepareOptionsMenu(Menu menu) { + if (isFinishing()) { + return true; + } + clearSettingState(); + menu.clear(); + if (mWorkingNote.getFolderId() == Notes.ID_CALL_RECORD_FOLDER) { + getMenuInflater().inflate(R.menu.call_note_edit, menu);//实例化menu + } else { + getMenuInflater().inflate(R.menu.note_edit, menu); + } + if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) { + menu.findItem(R.id.menu_list_mode).setTitle(R.string.menu_normal_mode);//实例化菜单中的项 + } else { + menu.findItem(R.id.menu_list_mode).setTitle(R.string.menu_list_mode); + } + if (mWorkingNote.hasClockAlert()) { + menu.findItem(R.id.menu_alert).setVisible(false); + } else { + menu.findItem(R.id.menu_delete_remind).setVisible(false); + } + return true; + } + + //响应菜单中某项被选择 + @Override + public boolean onOptionsItemSelected(MenuItem item) { + switch (item.getItemId()) {//根据项的id进行操作 + case R.id.menu_new_note: + createNewNote();//选择创建便签，调用createNewNote方法 + break; + case R.id.menu_delete://选择删除便签 + AlertDialog.Builder builder = new AlertDialog.Builder(this);//弹出一个对话框，进行选择 + builder.setTitle(getString(R.string.alert_title_delete)); + builder.setIcon(android.R.drawable.ic_dialog_alert); + builder.setMessage(getString(R.string.alert_message_delete_note)); + builder.setPositiveButton(android.R.string.ok,//设置确定按钮 + new DialogInterface.OnClickListener() {//对该按钮设置点击监听器 + public void onClick(DialogInterface dialog, int which) { + deleteCurrentNote(); + finish(); + } + }); + builder.setNegativeButton(android.R.string.cancel, null);//设置取消按钮 + builder.show();//显示对话框 + break; + case R.id.menu_font_size: + mFontSizeSelector.setVisibility(View.VISIBLE);//设置字体选择器可见 + findViewById(sFontSelectorSelectionMap.get(mFontSizeId)).setVisibility(View.VISIBLE);//应用字体 + break; + case R.id.menu_list_mode: + mWorkingNote.setCheckListMode(mWorkingNote.getCheckListMode() == 0 ? + TextNote.MODE_CHECK_LIST : 0); + break; + case R.id.menu_share: + getWorkingText(); + sendTo(this, mWorkingNote.getContent()); + break; + case R.id.menu_send_to_desktop://送到桌面 + sendToDesktop(); + break; + case R.id.menu_alert://设置闹钟 + setReminder(); + break; + case R.id.menu_delete_remind://删除闹钟 + mWorkingNote.setAlertDate(0, false); + break; + default: + break; + } + return true; + } + + //设置闹钟 + private void setReminder() { + DateTimePickerDialog d = new DateTimePickerDialog(this, System.currentTimeMillis());//实例闹钟对话框 + d.setOnDateTimeSetListener(new OnDateTimeSetListener() {//响应日期设置 + public void OnDateTimeSet(AlertDialog dialog, long date) { + mWorkingNote.setAlertDate(date , true); + } + }); + d.show(); + } + + /** + * Share note to apps that support {@link Intent#ACTION_SEND} action + * and {@text/plain} type + */ + //向某个应用发送 + private void sendTo(Context context, String info) { + Intent intent = new Intent(Intent.ACTION_SEND); + intent.putExtra(Intent.EXTRA_TEXT, info);//设置传递信息， + intent.setType("text/plain");//设置类型 + context.startActivity(intent);//传递 + } + + //创建新的便签 + private void createNewNote() { + // Firstly, save current editing notes + saveNote(); + + // For safety, start a new NoteEditActivity + finish(); + Intent intent = new Intent(this, NoteEditActivity.class); + intent.setAction(Intent.ACTION_INSERT_OR_EDIT);//设置动作为编辑 + intent.putExtra(Notes.INTENT_EXTRA_FOLDER_ID, mWorkingNote.getFolderId());//设置键值对数据，文件夹id + startActivity(intent); + } + + //删除当前便签 + private void deleteCurrentNote() { + if (mWorkingNote.existInDatabase()) {//在数据库中 + HashSet ids = new HashSet(); + long id = mWorkingNote.getNoteId(); + if (id != Notes.ID_ROOT_FOLDER) { + ids.add(id);//不是头文件id保存下来 + } else { + Log.d(TAG, "Wrong note id, should not happen"); + } + if (!isSyncMode()) {//不是同步模式，进行删除 + if (!DataUtils.batchDeleteNotes(getContentResolver(), ids)) { + Log.e(TAG, "Delete Note error"); + } + } else { + if (!DataUtils.batchMoveToFolder(getContentResolver(), ids, Notes.ID_TRASH_FOLER)) { + Log.e(TAG, "Move notes to trash folder error, should not happens"); + } + } + } + mWorkingNote.markDeleted(true);//标记已删除 + } + + //判断是否是同步模式 + private boolean isSyncMode() { + return NotesPreferenceActivity.getSyncAccountName(this).trim().length() > 0; + } + + //响应闹钟改变 + public void onClockAlertChanged(long date, boolean set) { + /** + * User could set clock to an unsaved note, so before setting the + * alert clock, we should save the note first + */ + if (!mWorkingNote.existInDatabase()) {//当前便签不在数据库中先保存 + saveNote(); + } + if (mWorkingNote.getNoteId() > 0) {//有便签，进行闹钟更改 + Intent intent = new Intent(this, AlarmReceiver.class); + intent.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, mWorkingNote.getNoteId())); + PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, 0); + AlarmManager alarmManager = ((AlarmManager) getSystemService(ALARM_SERVICE)); + showAlertHeader(); + if(!set) { + alarmManager.cancel(pendingIntent); + } else { + alarmManager.set(AlarmManager.RTC_WAKEUP, date, pendingIntent); + } + } else {//没有便签 + /** + * There is the condition that user has input nothing (the note is + * not worthy saving), we have no note id, remind the user that he + * should input something + */ + Log.e(TAG, "Clock alert setting error"); + showToast(R.string.error_note_empty_for_clock); + } + } + + public void onWidgetChanged() { + updateWidget(); + } + + //响应编辑文本框删除 + public void onEditTextDelete(int index, String text) { + int childCount = mEditTextList.getChildCount();//返回子元素个数，view + if (childCount == 1) {//子view个数=1，则无文本编辑框 + return; + } + + for (int i = index + 1; i < childCount; i++) { + ((NoteEditText) mEditTextList.getChildAt(i).findViewById(R.id.et_edit_text)) + .setIndex(i - 1); + } + + mEditTextList.removeViewAt(index);//根据index删除view + NoteEditText edit = null; + if(index == 0) { + edit = (NoteEditText) mEditTextList.getChildAt(0).findViewById( + R.id.et_edit_text); + } else { + edit = (NoteEditText) mEditTextList.getChildAt(index - 1).findViewById( + R.id.et_edit_text); + } + int length = edit.length(); + edit.append(text); + edit.requestFocus();//请求焦点，用于处理 + edit.setSelection(length); + } + + //响应打开文本编辑框 + public void onEditTextEnter(int index, String text) { + /** + * Should not happen, check for debug + */ + if(index > mEditTextList.getChildCount()) { + Log.e(TAG, "Index out of mEditTextList boundrary, should not happen"); + } + + View view = getListItem(text, index); + mEditTextList.addView(view, index);//向其添加一个新的view + NoteEditText edit = (NoteEditText) view.findViewById(R.id.et_edit_text); + edit.requestFocus();//请求焦点，用于处理 + edit.setSelection(0); + for (int i = index + 1; i < mEditTextList.getChildCount(); i++) { + ((NoteEditText) mEditTextList.getChildAt(i).findViewById(R.id.et_edit_text)) + .setIndex(i); + } + } + + //切换到列表模式 + private void switchToListMode(String text) { + mEditTextList.removeAllViews();//移除所有view + String[] items = text.split("\n"); + int index = 0; + for (String item : items) { + if(!TextUtils.isEmpty(item)) { + mEditTextList.addView(getListItem(item, index)); + index++;//item不为空，向编辑文本列表变量中加该view + } + } + mEditTextList.addView(getListItem("", index)); + mEditTextList.getChildAt(index).findViewById(R.id.et_edit_text).requestFocus(); + + mNoteEditor.setVisibility(View.GONE);//文本编辑器不可见 + mEditTextList.setVisibility(View.VISIBLE);//设置文本列表可见 + } + + //获得高亮的结果 + private Spannable getHighlightQueryResult(String fullText, String userQuery) { + SpannableString spannable = new SpannableString(fullText == null ? "" : fullText); + if (!TextUtils.isEmpty(userQuery)) { + mPattern = Pattern.compile(userQuery); + Matcher m = mPattern.matcher(fullText); + int start = 0; + while (m.find(start)) { + spannable.setSpan( + new BackgroundColorSpan(this.getResources().getColor( + R.color.user_query_highlight)), m.start(), m.end(), + Spannable.SPAN_INCLUSIVE_EXCLUSIVE); + start = m.end(); + } + } + return spannable; + } + + //获取列表项 + private View getListItem(String item, int index) { + View view = LayoutInflater.from(this).inflate(R.layout.note_edit_list_item, null); + final NoteEditText edit = (NoteEditText) view.findViewById(R.id.et_edit_text);//实例化view + edit.setTextAppearance(this, TextAppearanceResources.getTexAppearanceResource(mFontSizeId)); + CheckBox cb = ((CheckBox) view.findViewById(R.id.cb_edit_item));//设置复选框 + cb.setOnCheckedChangeListener(new OnCheckedChangeListener() { + public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { + if (isChecked) { + edit.setPaintFlags(edit.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG); + } else { + edit.setPaintFlags(Paint.ANTI_ALIAS_FLAG | Paint.DEV_KERN_TEXT_FLAG); + } + } + }); + + if (item.startsWith(TAG_CHECKED)) {//被勾选 + cb.setChecked(true); + edit.setPaintFlags(edit.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG); + item = item.substring(TAG_CHECKED.length(), item.length()).trim(); + } else if (item.startsWith(TAG_UNCHECKED)) {//未被勾选 + cb.setChecked(false); + edit.setPaintFlags(Paint.ANTI_ALIAS_FLAG | Paint.DEV_KERN_TEXT_FLAG); + item = item.substring(TAG_UNCHECKED.length(), item.length()).trim(); + } + + edit.setOnTextViewChangeListener(this); + edit.setIndex(index); + edit.setText(getHighlightQueryResult(item, mUserQuery)); + return view; + } + + //响应文本修改 + public void onTextChange(int index, boolean hasText) { + if (index >= mEditTextList.getChildCount()) {//位置超过范围 + Log.e(TAG, "Wrong index, should not happen"); + return; + } + if(hasText) { + mEditTextList.getChildAt(index).findViewById(R.id.cb_edit_item).setVisibility(View.VISIBLE); + } else { + mEditTextList.getChildAt(index).findViewById(R.id.cb_edit_item).setVisibility(View.GONE); + } + } + + //响应点击列表模式改变 + public void onCheckListModeChanged(int oldMode, int newMode) { + if (newMode == TextNote.MODE_CHECK_LIST) {//切换到列表模式 + switchToListMode(mNoteEditor.getText().toString()); + } else { + if (!getWorkingText()) { + mWorkingNote.setWorkingText(mWorkingNote.getContent().replace(TAG_UNCHECKED + " ", + "")); + } + mNoteEditor.setText(getHighlightQueryResult(mWorkingNote.getContent(), mUserQuery)); + mEditTextList.setVisibility(View.GONE); + mNoteEditor.setVisibility(View.VISIBLE); + } + } + + // + private boolean getWorkingText() { + boolean hasChecked = false; + if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) {//当前模式是列表 + StringBuilder sb = new StringBuilder(); + for (int i = 0; i < mEditTextList.getChildCount(); i++) {//变量列表中列表项 + View view = mEditTextList.getChildAt(i); + NoteEditText edit = (NoteEditText) view.findViewById(R.id.et_edit_text); + if (!TextUtils.isEmpty(edit.getText())) { + if (((CheckBox) view.findViewById(R.id.cb_edit_item)).isChecked()) { + sb.append(TAG_CHECKED).append(" ").append(edit.getText()).append("\n"); + hasChecked = true;//选中 + } else { + sb.append(TAG_UNCHECKED).append(" ").append(edit.getText()).append("\n");//不选中 + } + } + } + mWorkingNote.setWorkingText(sb.toString()); + } else { + mWorkingNote.setWorkingText(mNoteEditor.getText().toString()); + } + return hasChecked; + } + + //保存便签 + private boolean saveNote() { + getWorkingText(); + boolean saved = mWorkingNote.saveNote(); + if (saved) { + /** + * There are two modes from List view to edit view, open one note, + * create/edit a node. Opening node requires to the original + * position in the list when back from edit view, while creating a + * new node requires to the top of the list. This code + * {@link #RESULT_OK} is used to identify the create/edit state + */ + setResult(RESULT_OK); + } + return saved; + } + + //送到桌面 + private void sendToDesktop() { + /** + * Before send message to home, we should make sure that current + * editing note is exists in databases. So, for new note, firstly + * save it + */ + if (!mWorkingNote.existInDatabase()) { + saveNote();//先保存 + } + + if (mWorkingNote.getNoteId() > 0) {//有便签 + Intent sender = new Intent();//建立一个intent用于发送信息，保存有要发送的信息 + Intent shortcutIntent = new Intent(this, NoteEditActivity.class); + shortcutIntent.setAction(Intent.ACTION_VIEW); + shortcutIntent.putExtra(Intent.EXTRA_UID, mWorkingNote.getNoteId()); + sender.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent); + sender.putExtra(Intent.EXTRA_SHORTCUT_NAME, + makeShortcutIconTitle(mWorkingNote.getContent())); + sender.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, + Intent.ShortcutIconResource.fromContext(this, R.drawable.icon_app)); + sender.putExtra("duplicate", true); + sender.setAction("com.android.launcher.action.INSTALL_SHORTCUT");//动作为安装到桌面 + showToast(R.string.info_note_enter_desktop); + sendBroadcast(sender);//进行广播 + } else {//无便签报错 + /** + * There is the condition that user has input nothing (the note is + * not worthy saving), we have no note id, remind the user that he + * should input something + */ + Log.e(TAG, "Send to desktop error"); + showToast(R.string.error_note_empty_for_send_to_desktop); + } + } + + //编辑小图标标题 + private String makeShortcutIconTitle(String content) { + content = content.replace(TAG_CHECKED, ""); + content = content.replace(TAG_UNCHECKED, ""); + return content.length() > SHORTCUT_ICON_TITLE_MAX_LEN ? content.substring(0, + SHORTCUT_ICON_TITLE_MAX_LEN) : content; + } + + //进行提示显示 + private void showToast(int resId) { + showToast(resId, Toast.LENGTH_SHORT); + } + + //进行提示显示 + private void showToast(int resId, int duration) { + Toast.makeText(this, resId, duration).show(); + } +} diff --git a/doc/向金成——精读代码/ui/NoteEditText.java b/doc/向金成——精读代码/ui/NoteEditText.java new file mode 100644 index 00000000..6a275f01 --- /dev/null +++ b/doc/向金成——精读代码/ui/NoteEditText.java @@ -0,0 +1,229 @@ +/* + * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net) + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package net.micode.notes.ui; + +import android.content.Context; +import android.graphics.Rect; +import android.text.Layout; +import android.text.Selection; +import android.text.Spanned; +import android.text.TextUtils; +import android.text.style.URLSpan; +import android.util.AttributeSet; +import android.util.Log; +import android.view.ContextMenu; +import android.view.KeyEvent; +import android.view.MenuItem; +import android.view.MenuItem.OnMenuItemClickListener; +import android.view.MotionEvent; +import android.widget.EditText; + +import net.micode.notes.R; + +import java.util.HashMap; +import java.util.Map; + +public class NoteEditText extends EditText { + private static final String TAG = "NoteEditText"; + private int mIndex; + private int mSelectionStartBeforeDelete; + + private static final String SCHEME_TEL = "tel:" ; + private static final String SCHEME_HTTP = "http:" ; + private static final String SCHEME_EMAIL = "mailto:" ; + + //hashmap 建立电话号，邮件，web地址的连接 + private static final Map sSchemaActionResMap = new HashMap(); + static { + sSchemaActionResMap.put(SCHEME_TEL, R.string.note_link_tel); + sSchemaActionResMap.put(SCHEME_HTTP, R.string.note_link_web); + sSchemaActionResMap.put(SCHEME_EMAIL, R.string.note_link_email); + } + + /** + * Call by the {@link NoteEditActivity} to delete or add edit text + */ + //监听文本改变监听器接口 + public interface OnTextViewChangeListener { + /** + * Delete current edit text when {@link KeyEvent#KEYCODE_DEL} happens + * and the text is null + */ + void onEditTextDelete(int index, String text); + + /** + * Add edit text after current edit text when {@link KeyEvent#KEYCODE_ENTER} + * happen + */ + void onEditTextEnter(int index, String text); + + /** + * Hide or show item option when text change + */ + void onTextChange(int index, boolean hasText); + } + + private OnTextViewChangeListener mOnTextViewChangeListener; + + //根据context设置文本 + public NoteEditText(Context context) { + super(context, null); + mIndex = 0; + } + + //设置光标 + public void setIndex(int index) { + mIndex = index; + } + + //设置监听器 + public void setOnTextViewChangeListener(OnTextViewChangeListener listener) { + mOnTextViewChangeListener = listener; + } + + //AttributeSet自定义控件的属性 + public NoteEditText(Context context, AttributeSet attrs) { + super(context, attrs, android.R.attr.editTextStyle); + } + + public NoteEditText(Context context, AttributeSet attrs, int defStyle) { + super(context, attrs, defStyle); + // TODO Auto-generated constructor stub + } + + @Override//响应触摸事件 + public boolean onTouchEvent(MotionEvent event) { + switch (event.getAction()) { + case MotionEvent.ACTION_DOWN: + + int x = (int) event.getX(); + int y = (int) event.getY(); + x -= getTotalPaddingLeft(); + y -= getTotalPaddingTop(); + x += getScrollX(); + y += getScrollY();//更新坐标 + + Layout layout = getLayout(); + int line = layout.getLineForVertical(y); + int off = layout.getOffsetForHorizontal(line, x);//更新布局 + Selection.setSelection(getText(), off);//更新光标位置 + break; + } + + return super.onTouchEvent(event); + } + + //响应用户按下按键 + @Override + public boolean onKeyDown(int keyCode, KeyEvent event) { + switch (keyCode) { + case KeyEvent.KEYCODE_ENTER://点击enter按键 + if (mOnTextViewChangeListener != null) { + return false; + } + break; + case KeyEvent.KEYCODE_DEL://点击del按键 + mSelectionStartBeforeDelete = getSelectionStart(); + break; + default: + break; + } + return super.onKeyDown(keyCode, event);//其他按键执行父类方法 + } + + //响应松开按键 + @Override + public boolean onKeyUp(int keyCode, KeyEvent event) { + switch(keyCode) { + case KeyEvent.KEYCODE_DEL: + if (mOnTextViewChangeListener != null) {//被修改的话 + if (0 == mSelectionStartBeforeDelete && mIndex != 0) {//之前删除过且文本非空 + mOnTextViewChangeListener.onEditTextDelete(mIndex, getText().toString()); + return true; + } + } else { + Log.d(TAG, "OnTextViewChangeListener was not seted"); + } + break; + case KeyEvent.KEYCODE_ENTER: + if (mOnTextViewChangeListener != null) {//修改过 + int selectionStart = getSelectionStart(); + String text = getText().subSequence(selectionStart, length()).toString(); + setText(getText().subSequence(0, selectionStart)); + mOnTextViewChangeListener.onEditTextEnter(mIndex + 1, text);//调用监听器的对应方法 + } else { + Log.d(TAG, "OnTextViewChangeListener was not seted"); + } + break; + default: + break; + } + return super.onKeyUp(keyCode, event); + } + + //响应焦点改变 + @Override + protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) { + if (mOnTextViewChangeListener != null) {//如果有改变 + if (!focused && TextUtils.isEmpty(getText())) {//有焦点，文本不空 + mOnTextViewChangeListener.onTextChange(mIndex, false); + } else { + mOnTextViewChangeListener.onTextChange(mIndex, true); + } + } + super.onFocusChanged(focused, direction, previouslyFocusedRect); + } + + //创建上下文菜单 + @Override + protected void onCreateContextMenu(ContextMenu menu) { + if (getText() instanceof Spanned) {//有文本 + int selStart = getSelectionStart();//获取开始位置 + int selEnd = getSelectionEnd();//获取结束位置 + + int min = Math.min(selStart, selEnd);//获取从开头到结尾的最小值 + int max = Math.max(selStart, selEnd);//最大值 + + final URLSpan[] urls = ((Spanned) getText()).getSpans(min, max, URLSpan.class); + //设置url的信息的范围值 + if (urls.length == 1) { + int defaultResId = 0; + for(String schema: sSchemaActionResMap.keySet()) { + if(urls[0].getURL().indexOf(schema) >= 0) { + defaultResId = sSchemaActionResMap.get(schema); + break; + } + } + + if (defaultResId == 0) { + defaultResId = R.string.note_link_other; + } + + //建立菜单 + menu.add(0, 0, 0, defaultResId).setOnMenuItemClickListener( + new OnMenuItemClickListener() { + public boolean onMenuItemClick(MenuItem item) { + // goto a new intent + urls[0].onClick(NoteEditText.this); + return true; + } + }); + } + } + super.onCreateContextMenu(menu); + } +} diff --git a/doc/向金成——精读代码/ui/NoteItemData.java b/doc/向金成——精读代码/ui/NoteItemData.java new file mode 100644 index 00000000..e70eb6d3 --- /dev/null +++ b/doc/向金成——精读代码/ui/NoteItemData.java @@ -0,0 +1,229 @@ +/* + * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net) + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package net.micode.notes.ui; + +import android.content.Context; +import android.database.Cursor; +import android.text.TextUtils; + +import net.micode.notes.data.Contact; +import net.micode.notes.data.Notes; +import net.micode.notes.data.Notes.NoteColumns; +import net.micode.notes.tool.DataUtils; + + +public class NoteItemData { + //数据库中保存的便签的属性 + static final String [] PROJECTION = new String [] { + NoteColumns.ID, + NoteColumns.ALERTED_DATE, + NoteColumns.BG_COLOR_ID, + NoteColumns.CREATED_DATE, + NoteColumns.HAS_ATTACHMENT, + NoteColumns.MODIFIED_DATE, + NoteColumns.NOTES_COUNT, + NoteColumns.PARENT_ID, + NoteColumns.SNIPPET, + NoteColumns.TYPE, + NoteColumns.WIDGET_ID, + NoteColumns.WIDGET_TYPE, + }; + + private static final int ID_COLUMN = 0; + private static final int ALERTED_DATE_COLUMN = 1; + private static final int BG_COLOR_ID_COLUMN = 2; + private static final int CREATED_DATE_COLUMN = 3; + private static final int HAS_ATTACHMENT_COLUMN = 4; + private static final int MODIFIED_DATE_COLUMN = 5; + private static final int NOTES_COUNT_COLUMN = 6; + private static final int PARENT_ID_COLUMN = 7; + private static final int SNIPPET_COLUMN = 8; + private static final int TYPE_COLUMN = 9; + private static final int WIDGET_ID_COLUMN = 10; + private static final int WIDGET_TYPE_COLUMN = 11;//设置属性值 + + private long mId; + private long mAlertDate; + private int mBgColorId; + private long mCreatedDate; + private boolean mHasAttachment; + private long mModifiedDate; + private int mNotesCount; + private long mParentId; + private String mSnippet; + private int mType; + private int mWidgetId; + private int mWidgetType; + private String mName; + private String mPhoneNumber; + + private boolean mIsLastItem; + private boolean mIsFirstItem; + private boolean mIsOnlyOneItem; + private boolean mIsOneNoteFollowingFolder; + private boolean mIsMultiNotesFollowingFolder; + + //构造函数，设置通过光标能获得的属性 + public NoteItemData(Context context, Cursor cursor) { + mId = cursor.getLong(ID_COLUMN); + mAlertDate = cursor.getLong(ALERTED_DATE_COLUMN); + mBgColorId = cursor.getInt(BG_COLOR_ID_COLUMN); + mCreatedDate = cursor.getLong(CREATED_DATE_COLUMN); + mHasAttachment = (cursor.getInt(HAS_ATTACHMENT_COLUMN) > 0) ? true : false; + mModifiedDate = cursor.getLong(MODIFIED_DATE_COLUMN); + mNotesCount = cursor.getInt(NOTES_COUNT_COLUMN); + mParentId = cursor.getLong(PARENT_ID_COLUMN); + mSnippet = cursor.getString(SNIPPET_COLUMN); + mSnippet = mSnippet.replace(NoteEditActivity.TAG_CHECKED, "").replace( + NoteEditActivity.TAG_UNCHECKED, ""); + mType = cursor.getInt(TYPE_COLUMN); + mWidgetId = cursor.getInt(WIDGET_ID_COLUMN); + mWidgetType = cursor.getInt(WIDGET_TYPE_COLUMN); + + //初始化电话号 + mPhoneNumber = ""; + if (mParentId == Notes.ID_CALL_RECORD_FOLDER) { + mPhoneNumber = DataUtils.getCallNumberByNoteId(context.getContentResolver(), mId); + if (!TextUtils.isEmpty(mPhoneNumber)) { + mName = Contact.getContact(context, mPhoneNumber); + if (mName == null) { + mName = mPhoneNumber; + } + } + } + + if (mName == null) { + mName = ""; + } + checkPostion(cursor); + } + + //检测cursor指定项的位置 + private void checkPostion(Cursor cursor) { + mIsLastItem = cursor.isLast() ? true : false; + mIsFirstItem = cursor.isFirst() ? true : false; + mIsOnlyOneItem = (cursor.getCount() == 1); + mIsMultiNotesFollowingFolder = false; + mIsOneNoteFollowingFolder = false; + + if (mType == Notes.TYPE_NOTE && !mIsFirstItem) { + int position = cursor.getPosition(); + if (cursor.moveToPrevious()) { + if (cursor.getInt(TYPE_COLUMN) == Notes.TYPE_FOLDER + || cursor.getInt(TYPE_COLUMN) == Notes.TYPE_SYSTEM) { + if (cursor.getCount() > (position + 1)) { + mIsMultiNotesFollowingFolder = true; + } else { + mIsOneNoteFollowingFolder = true; + } + } + if (!cursor.moveToNext()) { + throw new IllegalStateException("cursor move to previous but can't move back"); + } + } + } + } + + //都是获取便签项的信息的方法 + public boolean isOneFollowingFolder() { + return mIsOneNoteFollowingFolder; + } + + public boolean isMultiFollowingFolder() { + return mIsMultiNotesFollowingFolder; + } + + public boolean isLast() { + return mIsLastItem; + } + + public String getCallName() { + return mName; + } + + public boolean isFirst() { + return mIsFirstItem; + } + + public boolean isSingle() { + return mIsOnlyOneItem; + } + + public long getId() { + return mId; + } + + public long getAlertDate() { + return mAlertDate; + } + + public long getCreatedDate() { + return mCreatedDate; + } + + public boolean hasAttachment() { + return mHasAttachment; + } + + public long getModifiedDate() { + return mModifiedDate; + } + + public int getBgColorId() { + return mBgColorId; + } + + public long getParentId() { + return mParentId; + } + + public int getNotesCount() { + return mNotesCount; + } + + public long getFolderId () { + return mParentId; + } + + public int getType() { + return mType; + } + + public int getWidgetType() { + return mWidgetType; + } + + public int getWidgetId() { + return mWidgetId; + } + + public String getSnippet() { + return mSnippet; + } + + public boolean hasAlert() { + return (mAlertDate > 0); + } + + public boolean isCallRecord() { + return (mParentId == Notes.ID_CALL_RECORD_FOLDER && !TextUtils.isEmpty(mPhoneNumber)); + } + + public static int getNoteType(Cursor cursor) { + return cursor.getInt(TYPE_COLUMN); + } +}