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explanatory note

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shihaoxuan 8 months ago
parent 38e55e2aa5
commit 5da189f50c
7 changed files with 584 additions and 430 deletions
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64
Notes-master/src/net/micode/notes/ui/AlarmAlertActivity.java
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@ -39,21 +39,25 @@ import net.micode.notes.tool.DataUtils;
import java.io.IOException; import java.io.IOException;
// AlarmAlertActivity类继承自Activity，用于处理闹钟提醒的UI和逻辑。
public class AlarmAlertActivity extends Activity implements OnClickListener, OnDismissListener { public class AlarmAlertActivity extends Activity implements OnClickListener, OnDismissListener {
// 用于存储笔记ID和笔记预览文本
private long mNoteId; private long mNoteId;
private String mSnippet; private String mSnippet;
// 定义预览文本的最大长度
private static final int SNIPPET_PREW_MAX_LEN = 60; private static final int SNIPPET_PREW_MAX_LEN = 60;
// 用于播放闹钟声音的MediaPlayer对象
MediaPlayer mPlayer; MediaPlayer mPlayer;
@Override @Override
protected void onCreate(Bundle savedInstanceState) { protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState); super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE); requestWindowFeature(Window.FEATURE_NO_TITLE); // 请求无标题栏的窗口特性
final Window win = getWindow(); final Window win = getWindow(); // 获取窗口对象
win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED); win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED); // 设置窗口在锁屏时也能显示
// 如果屏幕不是开启状态，则添加额外的窗口参数以点亮屏幕
if (!isScreenOn()) { if (!isScreenOn()) {
win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
| WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
@ -61,11 +65,15 @@ public class AlarmAlertActivity extends Activity implements OnClickListener, OnD
| WindowManager.LayoutParams.FLAG_LAYOUT_INSET_DECOR); | WindowManager.LayoutParams.FLAG_LAYOUT_INSET_DECOR);
} }
// 获取启动该Activity的Intent对象
Intent intent = getIntent(); Intent intent = getIntent();
try { try {
// 从Intent中解析笔记ID
mNoteId = Long.valueOf(intent.getData().getPathSegments().get(1)); mNoteId = Long.valueOf(intent.getData().getPathSegments().get(1));
// 根据笔记ID获取笔记预览文本
mSnippet = DataUtils.getSnippetById(this.getContentResolver(), mNoteId); mSnippet = DataUtils.getSnippetById(this.getContentResolver(), mNoteId);
// 如果预览文本超过最大长度，则截断并添加省略号
mSnippet = mSnippet.length() > SNIPPET_PREW_MAX_LEN ? mSnippet.substring(0, mSnippet = mSnippet.length() > SNIPPET_PREW_MAX_LEN ? mSnippet.substring(0,
SNIPPET_PREW_MAX_LEN) + getResources().getString(R.string.notelist_string_info) SNIPPET_PREW_MAX_LEN) + getResources().getString(R.string.notelist_string_info)
: mSnippet; : mSnippet;
@ -74,7 +82,9 @@ public class AlarmAlertActivity extends Activity implements OnClickListener, OnD
return; return;
} }
// 初始化MediaPlayer对象
mPlayer = new MediaPlayer(); mPlayer = new MediaPlayer();
// 如果笔记存在于数据库中，则显示操作对话框并播放闹钟声音
if (DataUtils.visibleInNoteDatabase(getContentResolver(), mNoteId, Notes.TYPE_NOTE)) { if (DataUtils.visibleInNoteDatabase(getContentResolver(), mNoteId, Notes.TYPE_NOTE)) {
showActionDialog(); showActionDialog();
playAlarmSound(); playAlarmSound();
@ -83,76 +93,82 @@ public class AlarmAlertActivity extends Activity implements OnClickListener, OnD
} }
} }
// 检查屏幕是否开启
private boolean isScreenOn() { private boolean isScreenOn() {
PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE); PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
return pm.isScreenOn(); return pm.isScreenOn();
} }
// 播放闹钟声音
private void playAlarmSound() { private void playAlarmSound() {
// 获取默认闹钟铃声的Uri
Uri url = RingtoneManager.getActualDefaultRingtoneUri(this, RingtoneManager.TYPE_ALARM); Uri url = RingtoneManager.getActualDefaultRingtoneUri(this, RingtoneManager.TYPE_ALARM);
// 获取受影响的静音模式流类型
int silentModeStreams = Settings.System.getInt(getContentResolver(), int silentModeStreams = Settings.System.getInt(getContentResolver(),
Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0); Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0);
// 设置MediaPlayer的音频流类型
if ((silentModeStreams & (1 << AudioManager.STREAM_ALARM)) != 0) { if ((silentModeStreams & (1 << AudioManager.STREAM_ALARM)) != 0) {
mPlayer.setAudioStreamType(silentModeStreams); mPlayer.setAudioStreamType(silentModeStreams);
} else { } else {
mPlayer.setAudioStreamType(AudioManager.STREAM_ALARM); mPlayer.setAudioStreamType(AudioManager.STREAM_ALARM);
} }
try { try {
// 设置MediaPlayer的数据源为闹钟铃声，并准备播放
mPlayer.setDataSource(this, url); mPlayer.setDataSource(this, url);
mPlayer.prepare(); mPlayer.prepare();
mPlayer.setLooping(true); mPlayer.setLooping(true); // 设置循环播放
mPlayer.start(); mPlayer.start();
} catch (IllegalArgumentException e) { } catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace(); e.printStackTrace();
} catch (SecurityException e) { } catch (SecurityException e) {
// TODO Auto-generated catch block
e.printStackTrace(); e.printStackTrace();
} catch (IllegalStateException e) { } catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace(); e.printStackTrace();
} catch (IOException e) { } catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace(); e.printStackTrace();
} }
} }
// 显示操作对话框
private void showActionDialog() { private void showActionDialog() {
AlertDialog.Builder dialog = new AlertDialog.Builder(this); AlertDialog.Builder dialog = new AlertDialog.Builder(this);
dialog.setTitle(R.string.app_name); dialog.setTitle(R.string.app_name); // 设置对话框标题
dialog.setMessage(mSnippet); dialog.setMessage(mSnippet); // 设置对话框消息
dialog.setPositiveButton(R.string.notealert_ok, this); dialog.setPositiveButton(R.string.notealert_ok, this); // 设置确定按钮
if (isScreenOn()) { if (isScreenOn()) { // 如果屏幕开启，则设置编辑按钮
dialog.setNegativeButton(R.string.notealert_enter, this); dialog.setNegativeButton(R.string.notealert_enter, this);
} }
dialog.show().setOnDismissListener(this); dialog.show().setOnDismissListener(this); // 显示对话框并设置对话框消失监听器
} }
// DialogInterface.OnClickListener接口的实现，处理对话框按钮点击事件
public void onClick(DialogInterface dialog, int which) { public void onClick(DialogInterface dialog, int which) {
switch (which) { switch (which) {
case DialogInterface.BUTTON_NEGATIVE: case DialogInterface.BUTTON_NEGATIVE: // 如果点击编辑按钮
Intent intent = new Intent(this, NoteEditActivity.class); Intent intent = new Intent(this, NoteEditActivity.class); // 创建Intent，跳转到编辑笔记界面
intent.setAction(Intent.ACTION_VIEW); intent.setAction(Intent.ACTION_VIEW);
intent.putExtra(Intent.EXTRA_UID, mNoteId); intent.putExtra(Intent.EXTRA_UID, mNoteId); // 传递笔记ID
startActivity(intent); startActivity(intent); // 启动编辑笔记界面
break; break;
default: default:
break; break;
} }
} }
// DialogInterface.OnDismissListener接口的实现，处理对话框消失事件
public void onDismiss(DialogInterface dialog) { public void onDismiss(DialogInterface dialog) {
stopAlarmSound(); stopAlarmSound(); // 停止闹钟声音
finish(); finish(); // 结束当前Activity
} }
// 停止闹钟声音
private void stopAlarmSound() { private void stopAlarmSound() {
if (mPlayer != null) { if (mPlayer != null) {
mPlayer.stop(); mPlayer.stop(); // 停止播放
mPlayer.release(); mPlayer.release(); // 释放资源
mPlayer = null; mPlayer = null; // 置空MediaPlayer对象
} }
} }
} }

26
Notes-master/src/net/micode/notes/ui/AlarmInitReceiver.java
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@ -28,38 +28,54 @@ import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.NoteColumns; import net.micode.notes.data.Notes.NoteColumns;
// AlarmInitReceiver类继承自BroadcastReceiver，用于初始化闹钟提醒。
public class AlarmInitReceiver extends BroadcastReceiver { public class AlarmInitReceiver extends BroadcastReceiver {
// 定义查询数据库时需要返回的列
private static final String [] PROJECTION = new String [] { private static final String [] PROJECTION = new String [] {
NoteColumns.ID, NoteColumns.ID, // 笔记ID
NoteColumns.ALERTED_DATE NoteColumns.ALERTED_DATE // 笔记的已提醒日期
}; };
private static final int COLUMN_ID = 0; // 定义PROJECTION数组中各列的索引
private static final int COLUMN_ALERTED_DATE = 1; private static final int COLUMN_ID = 0; // 笔记ID索引
private static final int COLUMN_ALERTED_DATE = 1; // 已提醒日期索引
// onReceive方法在接收到广播时被调用，这里用于设置闹钟提醒。
@Override @Override
public void onReceive(Context context, Intent intent) { public void onReceive(Context context, Intent intent) {
// 获取当前日期时间
long currentDate = System.currentTimeMillis(); long currentDate = System.currentTimeMillis();
// 查询数据库，获取所有未提醒且类型为笔记的笔记
Cursor c = context.getContentResolver().query(Notes.CONTENT_NOTE_URI, Cursor c = context.getContentResolver().query(Notes.CONTENT_NOTE_URI,
PROJECTION, PROJECTION,
NoteColumns.ALERTED_DATE + ">? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE, NoteColumns.ALERTED_DATE + ">? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE,
new String[] { String.valueOf(currentDate) }, new String[] { String.valueOf(currentDate) },
null); null);
// 如果查询结果不为空
if (c != null) { if (c != null) {
// 如果查询结果至少有一条记录
if (c.moveToFirst()) { if (c.moveToFirst()) {
// 遍历查询结果
do { do {
// 获取笔记的提醒日期
long alertDate = c.getLong(COLUMN_ALERTED_DATE); long alertDate = c.getLong(COLUMN_ALERTED_DATE);
// 创建一个Intent，用于触发闹钟提醒
Intent sender = new Intent(context, AlarmReceiver.class); Intent sender = new Intent(context, AlarmReceiver.class);
// 为Intent设置数据，标识具体的笔记
sender.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, c.getLong(COLUMN_ID))); sender.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, c.getLong(COLUMN_ID)));
// 创建PendingIntent，用于AlarmManager设置闹钟
PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, sender, 0); PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, sender, 0);
// 获取AlarmManager实例
AlarmManager alermManager = (AlarmManager) context AlarmManager alermManager = (AlarmManager) context
.getSystemService(Context.ALARM_SERVICE); .getSystemService(Context.ALARM_SERVICE);
// 设置闹钟，使用RTC_WAKEUP模式在指定时间唤醒设备
alermManager.set(AlarmManager.RTC_WAKEUP, alertDate, pendingIntent); alermManager.set(AlarmManager.RTC_WAKEUP, alertDate, pendingIntent);
} while (c.moveToNext()); } while (c.moveToNext());
} }
// 关闭游标
c.close(); c.close();
} }
} }
} }

7
Notes-master/src/net/micode/notes/ui/AlarmReceiver.java
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@ -20,11 +20,16 @@ import android.content.BroadcastReceiver;
import android.content.Context; import android.content.Context;
import android.content.Intent; import android.content.Intent;
// AlarmReceiver类继承自BroadcastReceiver，用于处理闹钟提醒的广播事件。
public class AlarmReceiver extends BroadcastReceiver { public class AlarmReceiver extends BroadcastReceiver {
// onReceive方法在接收到广播时被调用，这里用于启动闹钟提醒的Activity。
@Override @Override
public void onReceive(Context context, Intent intent) { public void onReceive(Context context, Intent intent) {
// 设置intent的目标类为AlarmAlertActivity，即闹钟提醒的Activity。
intent.setClass(context, AlarmAlertActivity.class); intent.setClass(context, AlarmAlertActivity.class);
// 为intent添加标志，表示需要创建一个新的任务栈。
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
// 使用context启动AlarmAlertActivity，展示闹钟提醒界面。
context.startActivity(intent); context.startActivity(intent);
} }
} }

598
Notes-master/src/net/micode/notes/ui/DateTimePicker.java
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@ -1,40 +1,42 @@
/* /**
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net) * 文件名称：DateTimePicker.java
* * 版权声明：版权所有 (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
* Licensed under the Apache License, Version 2.0 (the "License"); * 许可证声明：根据Apache License, Version 2.0（“许可证”）获得许可；
* you may not use this file except in compliance with the License. * 除非遵守许可证，否则不得使用此文件。
* You may obtain a copy of the License at * 您可以在以下网址获得许可证的副本：
* *
* http://www.apache.org/licenses/LICENSE-2.0 * http://www.apache.org/licenses/LICENSE-2.0
* *
* Unless required by applicable law or agreed to in writing, software * 除非适用法律要求或书面同意，否则按“现状”分发的软件是在没有任何明示或暗示的
* distributed under the License is distributed on an "AS IS" BASIS, * 保证和条件的情况下提供的，包括但不限于关于所有权、不侵犯第三方权利、适销性或
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * 适用于特定用途的任何保证和条件。有关权限和限制的具体语言，请参见许可证。
* See the License for the specific language governing permissions and
* limitations under the License.
*/ */
package net.micode.notes.ui; package net.micode.notes.ui; // 定义包名
import java.text.DateFormatSymbols;
import java.util.Calendar;
import net.micode.notes.R; import java.text.DateFormatSymbols; // 用于日期时间格式化的符号
import java.util.Calendar; // 用于日期时间操作的日历类
import net.micode.notes.R; // 导入资源文件R，用于访问资源
import android.content.Context; import android.content.Context; // Android上下文环境
import android.text.format.DateFormat; import android.text.format.DateFormat; // 用于日期时间格式化
import android.view.View; import android.view.View; // 用于视图操作
import android.widget.FrameLayout; import android.widget.FrameLayout; // 布局容器FrameLayout
import android.widget.NumberPicker; import android.widget.NumberPicker; // 自定义视图，用于选择数字
/**
* DateTimePicker 类是一个自定义视图组件，用于在Android应用中选择日期和时间。
*/
public class DateTimePicker extends FrameLayout { public class DateTimePicker extends FrameLayout {
// 类成员变量声明
private static final boolean DEFAULT_ENABLE_STATE = true; // 默认启用状态
private static final boolean DEFAULT_ENABLE_STATE = true; // 时间单位常量
private static final int HOURS_IN_HALF_DAY = 12; private static final int HOURS_IN_HALF_DAY = 12;
private static final int HOURS_IN_ALL_DAY = 24; private static final int HOURS_IN_ALL_DAY = 24;
private static final int DAYS_IN_ALL_WEEK = 7; private static final int DAYS_IN_ALL_WEEK = 7;
// NumberPicker组件的值范围常量
private static final int DATE_SPINNER_MIN_VAL = 0; 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 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_MIN_VAL_24_HOUR_VIEW = 0;
@ -46,39 +48,51 @@ public class DateTimePicker extends FrameLayout {
private static final int AMPM_SPINNER_MIN_VAL = 0; private static final int AMPM_SPINNER_MIN_VAL = 0;
private static final int AMPM_SPINNER_MAX_VAL = 1; private static final int AMPM_SPINNER_MAX_VAL = 1;
private final NumberPicker mDateSpinner; // 控件声明
private final NumberPicker mHourSpinner; private final NumberPicker mDateSpinner; // 用于选择日期的NumberPicker
private final NumberPicker mMinuteSpinner; private final NumberPicker mHourSpinner; // 用于选择小时的NumberPicker
private final NumberPicker mAmPmSpinner; private final NumberPicker mMinuteSpinner; // 用于选择分钟的NumberPicker
private Calendar mDate; private final NumberPicker mAmPmSpinner; // 用于选择上午/下午的NumberPicker
private Calendar mDate; // 用于管理日期和时间的Calendar实例
// 日期显示值数组
private String[] mDateDisplayValues = new String[DAYS_IN_ALL_WEEK]; private String[] mDateDisplayValues = new String[DAYS_IN_ALL_WEEK];
// 上午/下午状态标志
private boolean mIsAm; private boolean mIsAm;
// 是否为24小时视图
private boolean mIs24HourView; private boolean mIs24HourView;
// 控件启用状态
private boolean mIsEnabled = DEFAULT_ENABLE_STATE; private boolean mIsEnabled = DEFAULT_ENABLE_STATE;
// 控件初始化状态
private boolean mInitialising; private boolean mInitialising;
// 日期时间改变监听器
private OnDateTimeChangedListener mOnDateTimeChangedListener; private OnDateTimeChangedListener mOnDateTimeChangedListener;
// NumberPicker值变化监听器
private NumberPicker.OnValueChangeListener mOnDateChangedListener = new NumberPicker.OnValueChangeListener() { private NumberPicker.OnValueChangeListener mOnDateChangedListener = new NumberPicker.OnValueChangeListener() {
@Override @Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) { public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
// 当日期值变化时，更新日历并通知监听器
mDate.add(Calendar.DAY_OF_YEAR, newVal - oldVal); mDate.add(Calendar.DAY_OF_YEAR, newVal - oldVal);
updateDateControl(); updateDateControl();
onDateTimeChanged(); onDateTimeChanged();
} }
}; };
// 小时变化监听器
private NumberPicker.OnValueChangeListener mOnHourChangedListener = new NumberPicker.OnValueChangeListener() { private NumberPicker.OnValueChangeListener mOnHourChangedListener = new NumberPicker.OnValueChangeListener() {
@Override @Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) { public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
// 当小时值变化时，更新日历并通知监听器
boolean isDateChanged = false; boolean isDateChanged = false;
Calendar cal = Calendar.getInstance(); Calendar cal = Calendar.getInstance();
if (!mIs24HourView) { if (!mIs24HourView) {
// 处理12小时制逻辑
if (!mIsAm && oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY) { if (!mIsAm && oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY) {
cal.setTimeInMillis(mDate.getTimeInMillis()); cal.setTimeInMillis(mDate.getTimeInMillis());
cal.add(Calendar.DAY_OF_YEAR, 1); cal.add(Calendar.DAY_OF_YEAR, 1);
@ -94,6 +108,7 @@ public class DateTimePicker extends FrameLayout {
updateAmPmControl(); updateAmPmControl();
} }
} else { } else {
// 处理24小时制逻辑
if (oldVal == HOURS_IN_ALL_DAY - 1 && newVal == 0) { if (oldVal == HOURS_IN_ALL_DAY - 1 && newVal == 0) {
cal.setTimeInMillis(mDate.getTimeInMillis()); cal.setTimeInMillis(mDate.getTimeInMillis());
cal.add(Calendar.DAY_OF_YEAR, 1); cal.add(Calendar.DAY_OF_YEAR, 1);
@ -115,9 +130,11 @@ public class DateTimePicker extends FrameLayout {
} }
}; };
// 分钟变化监听器
private NumberPicker.OnValueChangeListener mOnMinuteChangedListener = new NumberPicker.OnValueChangeListener() { private NumberPicker.OnValueChangeListener mOnMinuteChangedListener = new NumberPicker.OnValueChangeListener() {
@Override @Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) { public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
// 当分钟值变化时，更新日历并通知监听器
int minValue = mMinuteSpinner.getMinValue(); int minValue = mMinuteSpinner.getMinValue();
int maxValue = mMinuteSpinner.getMaxValue(); int maxValue = mMinuteSpinner.getMaxValue();
int offset = 0; int offset = 0;
@ -144,9 +161,11 @@ public class DateTimePicker extends FrameLayout {
} }
}; };
// 上午/下午变化监听器
private NumberPicker.OnValueChangeListener mOnAmPmChangedListener = new NumberPicker.OnValueChangeListener() { private NumberPicker.OnValueChangeListener mOnAmPmChangedListener = new NumberPicker.OnValueChangeListener() {
@Override @Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) { public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
// 当上午/下午变化时，更新日历并通知监听器
mIsAm = !mIsAm; mIsAm = !mIsAm;
if (mIsAm) { if (mIsAm) {
mDate.add(Calendar.HOUR_OF_DAY, -HOURS_IN_HALF_DAY); mDate.add(Calendar.HOUR_OF_DAY, -HOURS_IN_HALF_DAY);
@ -158,11 +177,13 @@ public class DateTimePicker extends FrameLayout {
} }
}; };
// 定义日期时间变化监听器接口
public interface OnDateTimeChangedListener { public interface OnDateTimeChangedListener {
void onDateTimeChanged(DateTimePicker view, int year, int month, void onDateTimeChanged(DateTimePicker view, int year, int month,
int dayOfMonth, int hourOfDay, int minute); int dayOfMonth, int hourOfDay, int minute);
} }
// DateTimePicker的构造函数
public DateTimePicker(Context context) { public DateTimePicker(Context context) {
this(context, System.currentTimeMillis()); this(context, System.currentTimeMillis());
} }
@ -183,303 +204,308 @@ public class DateTimePicker extends FrameLayout {
mDateSpinner.setMaxValue(DATE_SPINNER_MAX_VAL); mDateSpinner.setMaxValue(DATE_SPINNER_MAX_VAL);
mDateSpinner.setOnValueChangedListener(mOnDateChangedListener); mDateSpinner.setOnValueChangedListener(mOnDateChangedListener);
mHourSpinner = (NumberPicker) findViewById(R.id.hour); mHourSpinner = (NumberPicker) findViewById
mHourSpinner.setOnValueChangedListener(mOnHourChangedListener);
mMinuteSpinner = (NumberPicker) findViewById(R.id.minute);
mMinuteSpinner.setMinValue(MINUT_SPINNER_MIN_VAL);
mMinuteSpinner.setMaxValue(MINUT_SPINNER_MAX_VAL);
mMinuteSpinner.setOnLongPressUpdateInterval(100);
mMinuteSpinner.setOnValueChangedListener(mOnMinuteChangedListener);
String[] stringsForAmPm = new DateFormatSymbols().getAmPmStrings();
mAmPmSpinner = (NumberPicker) findViewById(R.id.amPm);
mAmPmSpinner.setMinValue(AMPM_SPINNER_MIN_VAL);
mAmPmSpinner.setMaxValue(AMPM_SPINNER_MAX_VAL);
mAmPmSpinner.setDisplayedValues(stringsForAmPm);
mAmPmSpinner.setOnValueChangedListener(mOnAmPmChangedListener);
// update controls to initial state
updateDateControl();
updateHourControl();
updateAmPmControl();
set24HourView(is24HourView); String[] stringsForAmPm = new DateFormatSymbols().getAmPmStrings();
mAmPmSpinner = (NumberPicker) findViewById(R.id.amPm);
mAmPmSpinner.setMinValue(AMPM_SPINNER_MIN_VAL);
mAmPmSpinner.setMaxValue(AMPM_SPINNER_MAX_VAL);
mAmPmSpinner.setDisplayedValues(stringsForAmPm);
mAmPmSpinner.setOnValueChangedListener(mOnAmPmChangedListener);
// set to current time // 初始化控件状态
setCurrentDate(date); updateDateControl();
updateHourControl();
updateAmPmControl();
setEnabled(isEnabled()); set24HourView(is24HourView);
// set the content descriptions // 设置当前时间
mInitialising = false; setCurrentDate(date);
}
@Override setEnabled(isEnabled());
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 // 设置内容描述
public boolean isEnabled() { mInitialising = false;
return mIsEnabled; }
}
/** @Override
* Get the current date in millis public void setEnabled(boolean enabled) {
* // 设置控件是否可用
* @return the current date in millis if (mIsEnabled == enabled) {
*/ return;
public long getCurrentDateInTimeMillis() {
return mDate.getTimeInMillis();
} }
super.setEnabled(enabled);
mDateSpinner.setEnabled(enabled);
mMinuteSpinner.setEnabled(enabled);
mHourSpinner.setEnabled(enabled);
mAmPmSpinner.setEnabled(enabled);
mIsEnabled = enabled;
}
/** @Override
* Set the current date public boolean isEnabled() {
* // 获取控件是否可用
* @param date The current date in millis return mIsEnabled;
*/ }
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 * 获取当前日期的毫秒值
* *
* @param year The current year * @return 当前日期的毫秒值
* @param month The current month */
* @param dayOfMonth The current dayOfMonth public long getCurrentDateInTimeMillis() {
* @param hourOfDay The current hourOfDay return mDate.getTimeInMillis();
* @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 * 设置当前日期
* *
* @return The current year * @param date 当前日期的毫秒值
*/ */
public int getCurrentYear() { public void setCurrentDate(long date) {
return mDate.get(Calendar.YEAR); 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 current year * 设置当前日期
* *
* @param year The current year * @param year 当前年
*/ * @param month 当前月
public void setCurrentYear(int year) { * @param dayOfMonth 当前日
if (!mInitialising && year == getCurrentYear()) { * @param hourOfDay 当前小时
return; * @param minute 当前分钟
} */
mDate.set(Calendar.YEAR, year); public void setCurrentDate(int year, int month,
updateDateControl(); int dayOfMonth, int hourOfDay, int minute) {
onDateTimeChanged(); setCurrentYear(year);
} setCurrentMonth(month);
setCurrentDay(dayOfMonth);
setCurrentHour(hourOfDay);
setCurrentMinute(minute);
}
/** /**
* Get current month in the year * 获取当前年份
* *
* @return The current month in the year * @return 当前年份
*/ */
public int getCurrentMonth() { public int getCurrentYear() {
return mDate.get(Calendar.MONTH); return mDate.get(Calendar.YEAR);
} }
/** /**
* Set current month in the year * 设置当前年份
* *
* @param month The month in the year * @param year 当前年份
*/ */
public void setCurrentMonth(int month) { public void setCurrentYear(int year) {
if (!mInitialising && month == getCurrentMonth()) { if (!mInitialising && year == getCurrentYear()) {
return; return;
}
mDate.set(Calendar.MONTH, month);
updateDateControl();
onDateTimeChanged();
} }
mDate.set(Calendar.YEAR, year);
updateDateControl();
onDateTimeChanged();
}
/** /**
* Get current day of the month * 获取当前月份
* *
* @return The day of the month * @return 当前月份
*/ */
public int getCurrentDay() { public int getCurrentMonth() {
return mDate.get(Calendar.DAY_OF_MONTH); return mDate.get(Calendar.MONTH);
} }
/** /**
* Set current day of the month * 设置当前月份
* *
* @param dayOfMonth The day of the month * @param month 月份
*/ */
public void setCurrentDay(int dayOfMonth) { public void setCurrentMonth(int month) {
if (!mInitialising && dayOfMonth == getCurrentDay()) { if (!mInitialising && month == getCurrentMonth()) {
return; return;
}
mDate.set(Calendar.DAY_OF_MONTH, dayOfMonth);
updateDateControl();
onDateTimeChanged();
} }
mDate.set(Calendar.MONTH, month);
updateDateControl();
onDateTimeChanged();
}
/**
* 获取当前月份中的日期
*
* @return 月份中的日期
*/
public int getCurrentDay() {
return mDate.get(Calendar.DAY_OF_MONTH);
}
/** /**
* Get current hour in 24 hour mode, in the range (0~23) * 设置当前月份中的日期
* @return The current hour in 24 hour mode *
*/ * @param dayOfMonth 月份中的日期
public int getCurrentHourOfDay() { */
return mDate.get(Calendar.HOUR_OF_DAY); public void setCurrentDay(int dayOfMonth) {
if (!mInitialising && dayOfMonth == getCurrentDay()) {
return;
} }
mDate.set(Calendar.DAY_OF_MONTH, dayOfMonth);
updateDateControl();
onDateTimeChanged();
}
private int getCurrentHour() { /**
if (mIs24HourView){ * 获取24小时制的当前小时
return getCurrentHourOfDay(); *
* @return 24小时制的当前小时
*/
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 { } else {
int hour = getCurrentHourOfDay(); return hour == 0 ? HOURS_IN_HALF_DAY : hour;
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) * 设置24小时制的当前小时
* *
* @param hourOfDay * @param hourOfDay 24小时制的小时
*/ */
public void setCurrentHour(int hourOfDay) { public void setCurrentHour(int hourOfDay) {
if (!mInitialising && hourOfDay == getCurrentHourOfDay()) { if (!mInitialising && hourOfDay == getCurrentHourOfDay()) {
return; return;
} }
mDate.set(Calendar.HOUR_OF_DAY, hourOfDay); mDate.set(Calendar.HOUR_OF_DAY, hourOfDay);
if (!mIs24HourView) { if (!mIs24HourView) {
if (hourOfDay >= HOURS_IN_HALF_DAY) { if (hourOfDay >= HOURS_IN_HALF_DAY) {
mIsAm = false; mIsAm = false;
if (hourOfDay > HOURS_IN_HALF_DAY) { if (hourOfDay > HOURS_IN_HALF_DAY) {
hourOfDay -= HOURS_IN_HALF_DAY; hourOfDay -= HOURS_IN_HALF_DAY;
} }
} else { } else {
mIsAm = true; mIsAm = true;
if (hourOfDay == 0) { if (hourOfDay == 0) {
hourOfDay = HOURS_IN_HALF_DAY; hourOfDay = HOURS_IN_HALF_DAY;
}
} }
updateAmPmControl();
} }
mHourSpinner.setValue(hourOfDay); updateAmPmControl();
onDateTimeChanged();
}
/**
* Get currentMinute
*
* @return The Current Minute
*/
public int getCurrentMinute() {
return mDate.get(Calendar.MINUTE);
} }
mHourSpinner.setValue(hourOfDay);
onDateTimeChanged();
}
/** /**
* Set current minute * 获取当前分钟
*/ *
public void setCurrentMinute(int minute) { * @return 当前分钟
if (!mInitialising && minute == getCurrentMinute()) { */
return; public int getCurrentMinute() {
} return mDate.get(Calendar.MINUTE);
mMinuteSpinner.setValue(minute); }
mDate.set(Calendar.MINUTE, minute);
onDateTimeChanged();
}
/** /**
* @return true if this is in 24 hour view else false. * 设置当前分钟
*/ */
public boolean is24HourView () { public void setCurrentMinute(int minute) {
return mIs24HourView; if (!mInitialising && minute == getCurrentMinute()) {
return;
} }
mMinuteSpinner.setValue(minute);
mDate.set(Calendar.MINUTE, minute);
onDateTimeChanged();
}
/** /**
* Set whether in 24 hour or AM/PM mode. * 判断是否是24小时视图
* *
* @param is24HourView True for 24 hour mode. False for AM/PM mode. * @return 如果是24小时视图返回true，否则返回false。
*/ */
public void set24HourView(boolean is24HourView) { public boolean is24HourView () {
if (mIs24HourView == is24HourView) { return mIs24HourView;
return; }
}
mIs24HourView = is24HourView;
mAmPmSpinner.setVisibility(is24HourView ? View.GONE : View.VISIBLE);
int hour = getCurrentHourOfDay();
updateHourControl();
setCurrentHour(hour);
updateAmPmControl();
}
private void updateDateControl() { /**
Calendar cal = Calendar.getInstance(); * 设置是否是24小时视图或AM/PM模式
cal.setTimeInMillis(mDate.getTimeInMillis()); *
cal.add(Calendar.DAY_OF_YEAR, -DAYS_IN_ALL_WEEK / 2 - 1); * @param is24HourView 如果是24小时视图传入true，否则传入false。
mDateSpinner.setDisplayedValues(null); */
for (int i = 0; i < DAYS_IN_ALL_WEEK; ++i) { public void set24HourView(boolean is24HourView) {
cal.add(Calendar.DAY_OF_YEAR, 1); if (mIs24HourView == is24HourView) {
mDateDisplayValues[i] = (String) DateFormat.format("MM.dd EEEE", cal); return;
}
mDateSpinner.setDisplayedValues(mDateDisplayValues);
mDateSpinner.setValue(DAYS_IN_ALL_WEEK / 2);
mDateSpinner.invalidate();
} }
mIs24HourView = is24HourView;
mAmPmSpinner.setVisibility(is24HourView ? View.GONE : View.VISIBLE);
int hour = getCurrentHourOfDay();
updateHourControl();
setCurrentHour(hour);
updateAmPmControl();
}
private void updateAmPmControl() { /**
if (mIs24HourView) { * 更新日期控制
mAmPmSpinner.setVisibility(View.GONE); */
} else { private void updateDateControl() {
int index = mIsAm ? Calendar.AM : Calendar.PM; Calendar cal = Calendar.getInstance();
mAmPmSpinner.setValue(index); cal.setTimeInMillis(mDate.getTimeInMillis());
mAmPmSpinner.setVisibility(View.VISIBLE); 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 updateHourControl() { /**
if (mIs24HourView) { * 更新上午/下午控制
mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW); */
mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_24_HOUR_VIEW); private void updateAmPmControl() {
} else { if (mIs24HourView) {
mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW); mAmPmSpinner.setVisibility(View.GONE); // 在24小时视图中隐藏AM/PM选择器
mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW); } else {
} int index = mIsAm ? Calendar.AM : Calendar.PM; // 根据当前时间是上午还是下午设置索引
mAmPmSpinner.setValue(index); // 设置AM/PM选择器的值
mAmPmSpinner.setVisibility(View.VISIBLE); // 显示AM/PM选择器
} }
}
/** /**
* Set the callback that indicates the 'Set' button has been pressed. * 更新小时控制
* @param callback the callback, if null will do nothing */
*/ private void updateHourControl() {
public void setOnDateTimeChangedListener(OnDateTimeChangedListener callback) { if (mIs24HourView) {
mOnDateTimeChangedListener = callback; mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW); // 设置24小时视图的小时最小值
mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_24_HOUR_VIEW); // 设置24小时视图的小时最大值
} else {
mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW); // 设置12小时视图的小时最小值
mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW); // 设置12小时视图的小时最大值
} }
}
private void onDateTimeChanged() { /**
if (mOnDateTimeChangedListener != null) { * 设置日期时间改变的监听器
mOnDateTimeChangedListener.onDateTimeChanged(this, getCurrentYear(), *
getCurrentMonth(), getCurrentDay(), getCurrentHourOfDay(), getCurrentMinute()); /**
} * 当日期时间改变时调用此方法
*/
private void onDateTimeChanged() {
if (mOnDateTimeChangedListener != null) {
mOnDateTimeChangedListener.onDateTimeChanged(this, getCurrentYear(),
getCurrentMonth(), getCurrentDay(), getCurrentHourOfDay(), getCurrentMinute());
} }
} }

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Notes-master/src/net/micode/notes/ui/DateTimePickerDialog.java
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@ -1,87 +1,119 @@
/* /**
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net) * 文件名称：DateTimePickerDialog.java
* * 版权声明：版权所有 (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
* Licensed under the Apache License, Version 2.0 (the "License"); * 许可证声明：根据Apache License, Version 2.0（“许可证”）获得许可；
* you may not use this file except in compliance with the License. * 除非遵守许可证，否则不得使用此文件。
* You may obtain a copy of the License at * 您可以在以下网址获得许可证的副本：
* *
* http://www.apache.org/licenses/LICENSE-2.0 * http://www.apache.org/licenses/LICENSE-2.0
* *
* Unless required by applicable law or agreed to in writing, software * 除非适用法律要求或书面同意，否则按“现状”分发的软件是在没有任何明示或暗示的
* distributed under the License is distributed on an "AS IS" BASIS, * 保证和条件的情况下提供的，包括但不限于关于所有权、不侵犯第三方权利、适销性或
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * 适用于特定用途的任何保证和条件。有关权限和限制的具体语言，请参见许可证。
* See the License for the specific language governing permissions and
* limitations under the License.
*/ */
package net.micode.notes.ui; package net.micode.notes.ui; // 定义包名
import java.util.Calendar; import java.util.Calendar; // 导入日历类
import net.micode.notes.R; import net.micode.notes.R; // 导入资源文件R，用于访问资源
import net.micode.notes.ui.DateTimePicker; import net.micode.notes.ui.DateTimePicker; // 导入DateTimePicker类
import net.micode.notes.ui.DateTimePicker.OnDateTimeChangedListener; import net.micode.notes.ui.DateTimePicker.OnDateTimeChangedListener; // 导入DateTimePicker的监听器接口
import android.app.AlertDialog; import android.app.AlertDialog; // 导入AlertDialog类，用于创建对话框
import android.content.Context; import android.content.Context; // 导入Context类
import android.content.DialogInterface; import android.content.DialogInterface; // 导入DialogInterface类
import android.content.DialogInterface.OnClickListener; import android.content.DialogInterface.OnClickListener; // 导入点击事件监听器接口
import android.text.format.DateFormat; import android.text.format.DateFormat; // 导入日期格式化类
import android.text.format.DateUtils; import android.text.format.DateUtils; // 导入日期工具类
/**
* DateTimePickerDialog 类是一个继承自AlertDialog的对话框，用于选择日期和时间。
*/
public class DateTimePickerDialog extends AlertDialog implements OnClickListener { public class DateTimePickerDialog extends AlertDialog implements OnClickListener {
private Calendar mDate = Calendar.getInstance(); // 成员变量
private boolean mIs24HourView; private Calendar mDate = Calendar.getInstance(); // 当前日期时间的Calendar实例
private OnDateTimeSetListener mOnDateTimeSetListener; private boolean mIs24HourView; // 是否使用24小时制
private DateTimePicker mDateTimePicker; private OnDateTimeSetListener mOnDateTimeSetListener; // 日期时间设置监听器
private DateTimePicker mDateTimePicker; // DateTimePicker组件
/**
* 日期时间设置监听器接口
*/
public interface OnDateTimeSetListener { public interface OnDateTimeSetListener {
void OnDateTimeSet(AlertDialog dialog, long date); void OnDateTimeSet(AlertDialog dialog, long date); // 当日期时间设置时的回调方法
} }
/**
* DateTimePickerDialog构造函数
* @param context 上下文环境
* @param date 初始日期时间的毫秒值
*/
public DateTimePickerDialog(Context context, long date) { public DateTimePickerDialog(Context context, long date) {
super(context); super(context); // 调用AlertDialog的构造函数
mDateTimePicker = new DateTimePicker(context); mDateTimePicker = new DateTimePicker(context); // 创建DateTimePicker实例
setView(mDateTimePicker); setView(mDateTimePicker); // 设置对话框的内容视图
// 设置日期时间改变监听器
mDateTimePicker.setOnDateTimeChangedListener(new OnDateTimeChangedListener() { mDateTimePicker.setOnDateTimeChangedListener(new OnDateTimeChangedListener() {
public void onDateTimeChanged(DateTimePicker view, int year, int month, public void onDateTimeChanged(DateTimePicker view, int year, int month,
int dayOfMonth, int hourOfDay, int minute) { int dayOfMonth, int hourOfDay, int minute) {
mDate.set(Calendar.YEAR, year); mDate.set(Calendar.YEAR, year); // 设置年
mDate.set(Calendar.MONTH, month); mDate.set(Calendar.MONTH, month); // 设置月
mDate.set(Calendar.DAY_OF_MONTH, dayOfMonth); mDate.set(Calendar.DAY_OF_MONTH, dayOfMonth); // 设置日
mDate.set(Calendar.HOUR_OF_DAY, hourOfDay); mDate.set(Calendar.HOUR_OF_DAY, hourOfDay); // 设置小时
mDate.set(Calendar.MINUTE, minute); mDate.set(Calendar.MINUTE, minute); // 设置分钟
updateTitle(mDate.getTimeInMillis()); updateTitle(mDate.getTimeInMillis()); // 更新对话框标题
} }
}); });
mDate.setTimeInMillis(date); mDate.setTimeInMillis(date); // 设置初始日期时间
mDate.set(Calendar.SECOND, 0); mDate.set(Calendar.SECOND, 0); // 设置秒为0
mDateTimePicker.setCurrentDate(mDate.getTimeInMillis()); mDateTimePicker.setCurrentDate(mDate.getTimeInMillis()); // 设置DateTimePicker的初始日期时间
// 设置对话框按钮
setButton(context.getString(R.string.datetime_dialog_ok), this); setButton(context.getString(R.string.datetime_dialog_ok), this);
setButton2(context.getString(R.string.datetime_dialog_cancel), (OnClickListener)null); setButton2(context.getString(R.string.datetime_dialog_cancel), (OnClickListener)null);
// 设置24小时制视图
set24HourView(DateFormat.is24HourFormat(this.getContext())); set24HourView(DateFormat.is24HourFormat(this.getContext()));
updateTitle(mDate.getTimeInMillis()); updateTitle(mDate.getTimeInMillis()); // 更新对话框标题
} }
/**
* 设置是否使用24小时制视图
* @param is24HourView 是否使用24小时制
*/
public void set24HourView(boolean is24HourView) { public void set24HourView(boolean is24HourView) {
mIs24HourView = is24HourView; mIs24HourView = is24HourView;
// 根据是否使用24小时制更新DateTimePicker
mDateTimePicker.set24HourView(is24HourView);
} }
/**
* 设置日期时间设置监听器
* @param callBack 监听器实例
*/
public void setOnDateTimeSetListener(OnDateTimeSetListener callBack) { public void setOnDateTimeSetListener(OnDateTimeSetListener callBack) {
mOnDateTimeSetListener = callBack; mOnDateTimeSetListener = callBack; // 设置监听器
} }
/**
* 更新对话框标题
* @param date 毫秒值表示的日期时间
*/
private void updateTitle(long date) { private void updateTitle(long date) {
int flag = int flag = DateUtils.FORMAT_SHOW_YEAR | DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_SHOW_TIME;
DateUtils.FORMAT_SHOW_YEAR | // 根据是否使用24小时制设置格式化标志
DateUtils.FORMAT_SHOW_DATE | flag |= mIs24HourView ? DateUtils.FORMAT_24HOUR : DateUtils.FORMAT_12HOUR;
DateUtils.FORMAT_SHOW_TIME; // 设置对话框标题为日期时间字符串
flag |= mIs24HourView ? DateUtils.FORMAT_24HOUR : DateUtils.FORMAT_24HOUR;
setTitle(DateUtils.formatDateTime(this.getContext(), date, flag)); setTitle(DateUtils.formatDateTime(this.getContext(), date, flag));
} }
/**
* 点击事件处理
* @param arg0 对话框接口
* @param arg1 按钮标识
*/
public void onClick(DialogInterface arg0, int arg1) { public void onClick(DialogInterface arg0, int arg1) {
// 如果设置了监听器，则回调监听器
if (mOnDateTimeSetListener != null) { if (mOnDateTimeSetListener != null) {
mOnDateTimeSetListener.OnDateTimeSet(this, mDate.getTimeInMillis()); mOnDateTimeSetListener.OnDateTimeSet(this, mDate.getTimeInMillis());
} }

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Notes-master/src/net/micode/notes/ui/DropdownMenu.java
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@ -1,61 +1,82 @@
/* /**
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net) * 文件名称：DropdownMenu.java
* * 版权声明：版权所有 (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
* Licensed under the Apache License, Version 2.0 (the "License"); * 许可证声明：根据Apache License, Version 2.0（“许可证”）获得许可；
* you may not use this file except in compliance with the License. * 除非遵守许可证，否则不得使用此文件。
* You may obtain a copy of the License at * 您可以在以下网址获得许可证的副本：
* *
* http://www.apache.org/licenses/LICENSE-2.0 * http://www.apache.org/licenses/LICENSE-2.0
* *
* Unless required by applicable law or agreed to in writing, software * 除非适用法律要求或书面同意，否则按“现状”分发的软件是在没有任何明示或暗示的
* distributed under the License is distributed on an "AS IS" BASIS, * 保证和条件的情况下提供的，包括但不限于关于所有权、不侵犯第三方权利、适销性或
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * 适用于特定用途的任何保证和条件。有关权限和限制的具体语言，请参见许可证。
* See the License for the specific language governing permissions and
* limitations under the License.
*/ */
package net.micode.notes.ui; package net.micode.notes.ui; // 定义包名
import android.content.Context; import android.content.Context; // 导入Context类，用于获取系统资源和服务
import android.view.Menu; import android.view.Menu; // 导入Menu类，用于操作菜单
import android.view.MenuItem; import android.view.MenuItem; // 导入MenuItem类，用于操作菜单项
import android.view.View; import android.view.View; // 导入View类，用于操作视图
import android.view.View.OnClickListener; import android.view.View.OnClickListener; // 导入OnClickListener接口，用于设置点击事件
import android.widget.Button; import android.widget.Button; // 导入Button类，用于操作按钮
import android.widget.PopupMenu; import android.widget.PopupMenu; // 导入PopupMenu类，用于创建弹出菜单
import android.widget.PopupMenu.OnMenuItemClickListener; import android.widget.PopupMenu.OnMenuItemClickListener; // 导入OnMenuItemClickListener接口，用于设置菜单项点击事件
import net.micode.notes.R; import net.micode.notes.R; // 导入R类，用于访问资源文件
/**
* DropdownMenu 类用于创建一个下拉菜单（Dropdown Menu）。
*/
public class DropdownMenu { public class DropdownMenu {
private Button mButton; // 成员变量
private PopupMenu mPopupMenu; private Button mButton; // 用于触发下拉菜单的按钮
private Menu mMenu; private PopupMenu mPopupMenu; // 弹出菜单对象
private Menu mMenu; // 菜单对象
/**
* DropdownMenu 构造函数。
* @param context 上下文环境，用于获取系统资源和服务。
* @param button 用于触发下拉菜单的按钮。
* @param menuId 菜单资源ID，用于从XML资源文件中加载菜单项。
*/
public DropdownMenu(Context context, Button button, int menuId) { public DropdownMenu(Context context, Button button, int menuId) {
mButton = button; mButton = button; // 初始化按钮
mButton.setBackgroundResource(R.drawable.dropdown_icon); mButton.setBackgroundResource(R.drawable.dropdown_icon); // 设置按钮背景图标
mPopupMenu = new PopupMenu(context, mButton); mPopupMenu = new PopupMenu(context, mButton); // 创建PopupMenu对象
mMenu = mPopupMenu.getMenu(); mMenu = mPopupMenu.getMenu(); // 获取PopupMenu的Menu对象
mPopupMenu.getMenuInflater().inflate(menuId, mMenu); mPopupMenu.getMenuInflater().inflate(menuId, mMenu); // 从XML资源文件中加载菜单项
mButton.setOnClickListener(new OnClickListener() { mButton.setOnClickListener(new OnClickListener() {
public void onClick(View v) { public void onClick(View v) {
mPopupMenu.show(); mPopupMenu.show(); // 设置按钮点击事件，显示PopupMenu
} }
}); });
} }
/**
* 设置下拉菜单项点击事件监听器。
* @param listener 点击事件监听器。
*/
public void setOnDropdownMenuItemClickListener(OnMenuItemClickListener listener) { public void setOnDropdownMenuItemClickListener(OnMenuItemClickListener listener) {
if (mPopupMenu != null) { if (mPopupMenu != null) {
mPopupMenu.setOnMenuItemClickListener(listener); mPopupMenu.setOnMenuItemClickListener(listener); // 设置PopupMenu的菜单项点击事件
} }
} }
/**
* 查找具有指定ID的菜单项。
* @param id 菜单项ID。
* @return 返回找到的MenuItem对象，如果没有找到则返回null。
*/
public MenuItem findItem(int id) { public MenuItem findItem(int id) {
return mMenu.findItem(id); return mMenu.findItem(id); // 在Menu中查找指定ID的菜单项
} }
/**
* 设置触发下拉菜单的按钮文本。
* @param title 按钮文本。
*/
public void setTitle(CharSequence title) { public void setTitle(CharSequence title) {
mButton.setText(title); mButton.setText(title); // 设置按钮文本
} }
} }

106
Notes-master/src/net/micode/notes/ui/FoldersListAdapter.java
Unescape View File

@ -1,80 +1,118 @@
/* /**
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net) * 文件名称：FoldersListAdapter.java
* * 版权声明：版权所有 (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
* Licensed under the Apache License, Version 2.0 (the "License"); * 许可证声明：根据Apache License, Version 2.0（“许可证”）获得许可；
* you may not use this file except in compliance with the License. * 除非遵守许可证，否则不得使用此文件。
* You may obtain a copy of the License at * 您可以在以下网址获得许可证的副本：
* *
* http://www.apache.org/licenses/LICENSE-2.0 * http://www.apache.org/licenses/LICENSE-2.0
* *
* Unless required by applicable law or agreed to in writing, software * 除非适用法律要求或书面同意，否则按“现状”分发的软件是在没有任何明示或暗示的
* distributed under the License is distributed on an "AS IS" BASIS, * 保证和条件的情况下提供的，包括但不限于关于所有权、不侵犯第三方权利、适销性或
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * 适用于特定用途的任何保证和条件。有关权限和限制的具体语言，请参见许可证。
* See the License for the specific language governing permissions and
* limitations under the License.
*/ */
package net.micode.notes.ui; package net.micode.notes.ui; // 定义包名
import android.content.Context; import android.content.Context; // 导入Context类，用于获取系统资源和服务
import android.database.Cursor; import android.database.Cursor; // 导入Cursor类，用于访问数据库查询结果
import android.view.View; import android.view.View; // 导入View类，用于操作视图
import android.view.ViewGroup; import android.view.ViewGroup; // 导入ViewGroup类，用于操作视图组
import android.widget.CursorAdapter; import android.widget.CursorAdapter; // 导入CursorAdapter类，用于适配器
import android.widget.LinearLayout; import android.widget.LinearLayout; // 导入LinearLayout类，用于线性布局
import android.widget.TextView; import android.widget.TextView; // 导入TextView类，用于文本视图
import net.micode.notes.R; import net.micode.notes.R; // 导入R类，用于访问资源文件
import net.micode.notes.data.Notes; import net.micode.notes.data.Notes; // 导入Notes类，用于访问笔记数据
import net.micode.notes.data.Notes.NoteColumns; import net.micode.notes.data.Notes.NoteColumns; // 导入NoteColumns类，用于访问笔记列数据
/**
* FoldersListAdapter 类是一个用于文件夹列表的适配器，继承自CursorAdapter。
*/
public class FoldersListAdapter extends CursorAdapter { public class FoldersListAdapter extends CursorAdapter {
// 定义查询数据库时需要的列
public static final String [] PROJECTION = { public static final String [] PROJECTION = {
NoteColumns.ID, NoteColumns.ID,
NoteColumns.SNIPPET NoteColumns.SNIPPET
}; };
// 定义列索引常量
public static final int ID_COLUMN = 0; public static final int ID_COLUMN = 0;
public static final int NAME_COLUMN = 1; public static final int NAME_COLUMN = 1;
/**
* FoldersListAdapter 构造函数。
* @param context 上下文环境，用于获取系统资源和服务。
* @param c 数据库查询结果的Cursor对象。
*/
public FoldersListAdapter(Context context, Cursor c) { public FoldersListAdapter(Context context, Cursor c) {
super(context, c); super(context, c); // 调用父类的构造函数
// TODO Auto-generated constructor stub
} }
/**
* 创建新的视图。
* @param context 上下文环境。
* @param cursor Cursor对象。
* @param parent 父视图组。
* @return 返回新的视图对象。
*/
@Override @Override
public View newView(Context context, Cursor cursor, ViewGroup parent) { public View newView(Context context, Cursor cursor, ViewGroup parent) {
return new FolderListItem(context); return new FolderListItem(context); // 创建FolderListItem视图
} }
/**
* 绑定视图和数据。
* @param view 视图对象。
* @param context 上下文环境。
* @param cursor Cursor对象。
*/
@Override @Override
public void bindView(View view, Context context, Cursor cursor) { public void bindView(View view, Context context, Cursor cursor) {
if (view instanceof FolderListItem) { if (view instanceof FolderListItem) {
// 获取文件夹名称
String folderName = (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ? context String folderName = (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ? context
.getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN); .getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN);
((FolderListItem) view).bind(folderName); ((FolderListItem) view).bind(folderName); // 绑定数据到视图
} }
} }
/**
* 获取文件夹名称。
* @param context 上下文环境。
* @param position 位置。
* @return 返回文件夹名称。
*/
public String getFolderName(Context context, int position) { public String getFolderName(Context context, int position) {
Cursor cursor = (Cursor) getItem(position); Cursor cursor = (Cursor) getItem(position); // 获取对应位置的Cursor对象
return (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ? context return (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ? context
.getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN); .getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN); // 获取文件夹名称
} }
/**
* FolderListItem 类是文件夹列表项的视图。
*/
private class FolderListItem extends LinearLayout { private class FolderListItem extends LinearLayout {
private TextView mName; private TextView mName; // 用于显示文件夹名称的TextView
/**
* FolderListItem 构造函数。
* @param context 上下文环境。
*/
public FolderListItem(Context context) { public FolderListItem(Context context) {
super(context); super(context); // 调用父类的构造函数
inflate(context, R.layout.folder_list_item, this); inflate(context, R.layout.folder_list_item, this); // 从XML布局文件中加载视图
mName = (TextView) findViewById(R.id.tv_folder_name); mName = (TextView) findViewById(R.id.tv_folder_name); // 获取TextView对象
} }
/**
* 绑定文件夹名称数据到视图。
* @param name 文件夹名称。
*/
public void bind(String name) { public void bind(String name) {
mName.setText(name); mName.setText(name); // 设置TextView的文本
} }
} }
} }
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