diff --git a/java/net/micode/notes/widget/NoteWidgetProvider.java b/java/net/micode/notes/widget/NoteWidgetProvider.java index ec6f819..f2e9a61 100644 --- a/java/net/micode/notes/widget/NoteWidgetProvider.java +++ b/java/net/micode/notes/widget/NoteWidgetProvider.java @@ -5,7 +5,7 @@ * 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 + * 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, @@ -15,6 +15,7 @@ */ package net.micode.notes.widget; + import android.app.PendingIntent; import android.appwidget.AppWidgetManager; import android.appwidget.AppWidgetProvider; @@ -33,30 +34,34 @@ import net.micode.notes.ui.NoteEditActivity; import net.micode.notes.ui.NotesListActivity; public abstract class NoteWidgetProvider extends AppWidgetProvider { - public static final String [] PROJECTION = new String [] { - NoteColumns.ID, - NoteColumns.BG_COLOR_ID, - NoteColumns.SNIPPET + // 定义查询投影，指定要查询的列 + public static final String[] PROJECTION = new String[] { + NoteColumns.ID, // 笔记 ID + NoteColumns.BG_COLOR_ID, // 背景颜色 ID + NoteColumns.SNIPPET // 摘要 }; - public static final int COLUMN_ID = 0; - public static final int COLUMN_BG_COLOR_ID = 1; - public static final int COLUMN_SNIPPET = 2; + // 定义各列在查询结果中的索引 + public static final int COLUMN_ID = 0; + public static final int COLUMN_BG_COLOR_ID = 1; + public static final int COLUMN_SNIPPET = 2; - private static final String TAG = "NoteWidgetProvider"; + private static final String TAG = "NoteWidgetProvider"; // 日志标签 @Override public void onDeleted(Context context, int[] appWidgetIds) { + // 当小部件被删除时，更新数据库中的相关记录 ContentValues values = new ContentValues(); values.put(NoteColumns.WIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID); for (int i = 0; i < appWidgetIds.length; i++) { context.getContentResolver().update(Notes.CONTENT_NOTE_URI, values, NoteColumns.WIDGET_ID + "=?", - new String[] { String.valueOf(appWidgetIds[i])}); + new String[] { String.valueOf(appWidgetIds[i]) }); } } + // 获取与小部件相关的笔记信息 private Cursor getNoteWidgetInfo(Context context, int widgetId) { return context.getContentResolver().query(Notes.CONTENT_NOTE_URI, PROJECTION, @@ -65,17 +70,19 @@ public abstract class NoteWidgetProvider extends AppWidgetProvider { null); } + // 更新小部件 protected void update(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) { update(context, appWidgetManager, appWidgetIds, false); } + // 更新小部件，支持隐私模式 private void update(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds, boolean privacyMode) { for (int i = 0; i < appWidgetIds.length; i++) { if (appWidgetIds[i] != AppWidgetManager.INVALID_APPWIDGET_ID) { - int bgId = ResourceParser.getDefaultBgId(context); - String snippet = ""; - Intent intent = new Intent(context, NoteEditActivity.class); + int bgId = ResourceParser.getDefaultBgId(context); // 获取默认背景颜色 ID + String snippet = ""; // 笔记摘要 + Intent intent = new Intent(context, NoteEditActivity.class); // 创建编辑笔记的意图 intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP); intent.putExtra(Notes.INTENT_EXTRA_WIDGET_ID, appWidgetIds[i]); intent.putExtra(Notes.INTENT_EXTRA_WIDGET_TYPE, getWidgetType()); @@ -87,8 +94,8 @@ public abstract class NoteWidgetProvider extends AppWidgetProvider { c.close(); return; } - snippet = c.getString(COLUMN_SNIPPET); - bgId = c.getInt(COLUMN_BG_COLOR_ID); + snippet = c.getString(COLUMN_SNIPPET); // 获取笔记摘要 + bgId = c.getInt(COLUMN_BG_COLOR_ID); // 获取背景颜色 ID intent.putExtra(Intent.EXTRA_UID, c.getLong(COLUMN_ID)); intent.setAction(Intent.ACTION_VIEW); } else { @@ -100,33 +107,31 @@ public abstract class NoteWidgetProvider extends AppWidgetProvider { c.close(); } - RemoteViews rv = new RemoteViews(context.getPackageName(), getLayoutId()); - rv.setImageViewResource(R.id.widget_bg_image, getBgResourceId(bgId)); - intent.putExtra(Notes.INTENT_EXTRA_BACKGROUND_ID, bgId); - /** - * Generate the pending intent to start host for the widget - */ + RemoteViews rv = new RemoteViews(context.getPackageName(), getLayoutId()); // 创建远程视图 + rv.setImageViewResource(R.id.widget_bg_image, getBgResourceId(bgId)); // 设置背景颜色资源 + + // 创建点击事件的待处理意图 PendingIntent pendingIntent = null; if (privacyMode) { - rv.setTextViewText(R.id.widget_text, - context.getString(R.string.widget_under_visit_mode)); - pendingIntent = PendingIntent.getActivity(context, appWidgetIds[i], new Intent( - context, NotesListActivity.class), PendingIntent.FLAG_UPDATE_CURRENT); + rv.setTextViewText(R.id.widget_text, context.getString(R.string.widget_under_visit_mode)); // 设置隐私模式下的文本 + pendingIntent = PendingIntent.getActivity(context, appWidgetIds[i], new Intent(context, NotesListActivity.class), PendingIntent.FLAG_UPDATE_CURRENT); } else { - rv.setTextViewText(R.id.widget_text, snippet); - pendingIntent = PendingIntent.getActivity(context, appWidgetIds[i], intent, - PendingIntent.FLAG_UPDATE_CURRENT); + rv.setTextViewText(R.id.widget_text, snippet); // 设置笔记摘要文本 + pendingIntent = PendingIntent.getActivity(context, appWidgetIds[i], intent, PendingIntent.FLAG_UPDATE_CURRENT); } - rv.setOnClickPendingIntent(R.id.widget_text, pendingIntent); - appWidgetManager.updateAppWidget(appWidgetIds[i], rv); + rv.setOnClickPendingIntent(R.id.widget_text, pendingIntent); // 设置点击事件的待处理意图 + appWidgetManager.updateAppWidget(appWidgetIds[i], rv); // 更新小部件 } } } + // 获取背景颜色资源 ID，由子类实现 protected abstract int getBgResourceId(int bgId); + // 获取布局 ID，由子类实现 protected abstract int getLayoutId(); + // 获取小部件类型，由子类实现 protected abstract int getWidgetType(); -} +} \ No newline at end of file