From 04d6e97931a5f2290d48ff417ae9de2f98861c00 Mon Sep 17 00:00:00 2001 From: paripynbv <407245071@qq.com> Date: Fri, 21 Apr 2023 09:21:33 +0800 Subject: [PATCH] Delete 'doc' --- .../AlarmAlertActivity.java | 61 ++++++++++++++ .../AlarmInitReceiver.java | 61 ++++++++++++++ .../代码注释_刘翱翔/AlarmReceiver.java | 24 ++++++ .../DateTimePickerDialog.java | 80 +++++++++++++++++++ .get/代码注释_刘翱翔/DropdownMenu.java | 57 +++++++++++++ .../FoldersListAdapter.java | 80 +++++++++++++++++++ 6 files changed, 363 insertions(+) create mode 100644 .get/代码注释_刘翱翔/AlarmAlertActivity.java create mode 100644 .get/代码注释_刘翱翔/AlarmInitReceiver.java create mode 100644 .get/代码注释_刘翱翔/AlarmReceiver.java create mode 100644 .get/代码注释_刘翱翔/DateTimePickerDialog.java create mode 100644 .get/代码注释_刘翱翔/DropdownMenu.java create mode 100644 .get/代码注释_刘翱翔/FoldersListAdapter.java diff --git a/.get/代码注释_刘翱翔/AlarmAlertActivity.java b/.get/代码注释_刘翱翔/AlarmAlertActivity.java new file mode 100644 index 0000000..b0d38e8 --- /dev/null +++ b/.get/代码注释_刘翱翔/AlarmAlertActivity.java @@ -0,0 +1,61 @@ +### AlarmInitReceiver.java + +```java +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 + }; + //对数据库的操作，调用标签ID和闹钟时间 + private static final int COLUMN_ID = 0; + private static final int COLUMN_ALERTED_DATE = 1; + + @Override + public void onReceive(Context context, Intent intent) { + long currentDate = System.currentTimeMillis(); + //System.currentTimeMillis()产生一个当前的时间,以毫秒为单位 + //这个毫秒其实就是自1970年1月1日0时起的毫秒数 + Cursor c = context.getContentResolver().query(Notes.CONTENT_NOTE_URI, + PROJECTION, + NoteColumns.ALERTED_DATE + ">? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE, + new String[] { String.valueOf(currentDate) }, + //将long变量currentDate转化为字符串 + null); + //Cursor在这里的作用是通过查找数据库中的标签内容，找到和当前系统时间相等的标签 + + if (c != null) { + if (c.moveToFirst()) { + do { + long alertDate = c.getLong(COLUMN_ALERTED_DATE); + Intent sender = new Intent(context, AlarmReceiver.class); + sender.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, c.getLong(COLUMN_ID))); + PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, sender, 0); + AlarmManager alermManager = (AlarmManager) context + .getSystemService(Context.ALARM_SERVICE); + alermManager.set(AlarmManager.RTC_WAKEUP, alertDate, pendingIntent); + } while (c.moveToNext()); + } + c.close(); + } + //闹钟机制的启动，通常需要几个步骤 + //新建Intent、PendingIntent以及AlarmManager等 + //这里就是根据数据库里的闹钟时间创建一个闹钟机制 + } +} +``` + diff --git a/.get/代码注释_刘翱翔/AlarmInitReceiver.java b/.get/代码注释_刘翱翔/AlarmInitReceiver.java new file mode 100644 index 0000000..b0d38e8 --- /dev/null +++ b/.get/代码注释_刘翱翔/AlarmInitReceiver.java @@ -0,0 +1,61 @@ +### AlarmInitReceiver.java + +```java +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 + }; + //对数据库的操作，调用标签ID和闹钟时间 + private static final int COLUMN_ID = 0; + private static final int COLUMN_ALERTED_DATE = 1; + + @Override + public void onReceive(Context context, Intent intent) { + long currentDate = System.currentTimeMillis(); + //System.currentTimeMillis()产生一个当前的时间,以毫秒为单位 + //这个毫秒其实就是自1970年1月1日0时起的毫秒数 + Cursor c = context.getContentResolver().query(Notes.CONTENT_NOTE_URI, + PROJECTION, + NoteColumns.ALERTED_DATE + ">? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE, + new String[] { String.valueOf(currentDate) }, + //将long变量currentDate转化为字符串 + null); + //Cursor在这里的作用是通过查找数据库中的标签内容，找到和当前系统时间相等的标签 + + if (c != null) { + if (c.moveToFirst()) { + do { + long alertDate = c.getLong(COLUMN_ALERTED_DATE); + Intent sender = new Intent(context, AlarmReceiver.class); + sender.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, c.getLong(COLUMN_ID))); + PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, sender, 0); + AlarmManager alermManager = (AlarmManager) context + .getSystemService(Context.ALARM_SERVICE); + alermManager.set(AlarmManager.RTC_WAKEUP, alertDate, pendingIntent); + } while (c.moveToNext()); + } + c.close(); + } + //闹钟机制的启动，通常需要几个步骤 + //新建Intent、PendingIntent以及AlarmManager等 + //这里就是根据数据库里的闹钟时间创建一个闹钟机制 + } +} +``` + diff --git a/.get/代码注释_刘翱翔/AlarmReceiver.java b/.get/代码注释_刘翱翔/AlarmReceiver.java new file mode 100644 index 0000000..38c120c --- /dev/null +++ b/.get/代码注释_刘翱翔/AlarmReceiver.java @@ -0,0 +1,24 @@ +### AlarmReceiver.java + +```java +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); + //启动AlarmAlertActivity + intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); + //activity要存在于activity的栈中 + //所以要新起一个栈装入启动的activity + context.startActivity(intent); + } +} +//这是实现alarm这个功能最接近用户层的包，基于上面的两个包 + +``` + diff --git a/.get/代码注释_刘翱翔/DateTimePickerDialog.java b/.get/代码注释_刘翱翔/DateTimePickerDialog.java new file mode 100644 index 0000000..d1dc3e4 --- /dev/null +++ b/.get/代码注释_刘翱翔/DateTimePickerDialog.java @@ -0,0 +1,80 @@ +### FoldersListAdapter.java + +```java +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是Cursor和ListView的接口 + //FoldersListAdapter继承了CursorAdapter的类 + //主要作用是便签数据库和用户的数据交流 + //这里就是用folder（文件夹）的形式展现给用户 + public static final String [] PROJECTION = { + NoteColumns.ID, + NoteColumns.SNIPPET + }; + //调用数据库中便签的ID和片段 + + public static final int ID_COLUMN = 0; + public static final int NAME_COLUMN = 1; + + public FoldersListAdapter(Context context, Cursor c) { + super(context, c); + } + //数据库操作 + + @Override + public View newView(Context context, Cursor cursor, ViewGroup parent) { + //ViewGroup是容器 + return new FolderListItem(context); + } + //创建一个文件夹，对于各文件夹中子标签的初始化 + + @Override + 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); + ((FolderListItem) view).bind(folderName); + } + } + //将各个布局文件绑定起来 + + 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); + } + //根据数据库中标签的ID得到标签的各项内容 + + private class FolderListItem extends LinearLayout { + private TextView mName; + + public FolderListItem(Context context) { + super(context); + //操作数据库 + inflate(context, R.layout.folder_list_item, this); + //根据布局文件的名字等信息将其找出来 + mName = (TextView) findViewById(R.id.tv_folder_name); + } + + public void bind(String name) { + mName.setText(name); + } + } + +} +``` + diff --git a/.get/代码注释_刘翱翔/DropdownMenu.java b/.get/代码注释_刘翱翔/DropdownMenu.java new file mode 100644 index 0000000..f1d5843 --- /dev/null +++ b/.get/代码注释_刘翱翔/DropdownMenu.java @@ -0,0 +1,57 @@ +### DropdownMenu.java + +```java +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; + //声明一个下拉菜单 + private Menu mMenu; + + public DropdownMenu(Context context, Button button, int menuId) { + mButton = button; + mButton.setBackgroundResource(R.drawable.dropdown_icon); + //设置这个view的背景 + mPopupMenu = new PopupMenu(context, mButton); + mMenu = mPopupMenu.getMenu(); + mPopupMenu.getMenuInflater().inflate(menuId, mMenu); + //MenuInflater是用来实例化Menu目录下的Menu布局文件 + //根据ID来确认menu的内容选项 + mButton.setOnClickListener(new OnClickListener() { + public void onClick(View v) { + mPopupMenu.show(); + } + }); + } + + public void setOnDropdownMenuItemClickListener(OnMenuItemClickListener listener) { + if (mPopupMenu != null) { + mPopupMenu.setOnMenuItemClickListener(listener); + } + //设置菜单的监听 + } + + public MenuItem findItem(int id) { + return mMenu.findItem(id); + } + //对于菜单选项的初始化，根据索引搜索菜单需要的选项 + + public void setTitle(CharSequence title) { + mButton.setText(title); + } + //布局文件，设置标题 +} +``` + diff --git a/.get/代码注释_刘翱翔/FoldersListAdapter.java b/.get/代码注释_刘翱翔/FoldersListAdapter.java new file mode 100644 index 0000000..d1dc3e4 --- /dev/null +++ b/.get/代码注释_刘翱翔/FoldersListAdapter.java @@ -0,0 +1,80 @@ +### FoldersListAdapter.java + +```java +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是Cursor和ListView的接口 + //FoldersListAdapter继承了CursorAdapter的类 + //主要作用是便签数据库和用户的数据交流 + //这里就是用folder（文件夹）的形式展现给用户 + public static final String [] PROJECTION = { + NoteColumns.ID, + NoteColumns.SNIPPET + }; + //调用数据库中便签的ID和片段 + + public static final int ID_COLUMN = 0; + public static final int NAME_COLUMN = 1; + + public FoldersListAdapter(Context context, Cursor c) { + super(context, c); + } + //数据库操作 + + @Override + public View newView(Context context, Cursor cursor, ViewGroup parent) { + //ViewGroup是容器 + return new FolderListItem(context); + } + //创建一个文件夹，对于各文件夹中子标签的初始化 + + @Override + 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); + ((FolderListItem) view).bind(folderName); + } + } + //将各个布局文件绑定起来 + + 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); + } + //根据数据库中标签的ID得到标签的各项内容 + + private class FolderListItem extends LinearLayout { + private TextView mName; + + public FolderListItem(Context context) { + super(context); + //操作数据库 + inflate(context, R.layout.folder_list_item, this); + //根据布局文件的名字等信息将其找出来 + mName = (TextView) findViewById(R.id.tv_folder_name); + } + + public void bind(String name) { + mName.setText(name); + } + } + +} +``` +