diff --git a/w/W3.txt b/w/W3.txt new file mode 100644 index 0000000..331e274 --- /dev/null +++ b/w/W3.txt @@ -0,0 +1,57 @@ +/* + * 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. + */ + +// 包声明,表明该类所属的包名为net.micode.notes.widget +package net.micode.notes.widget; + +import android.appwidget.AppWidgetManager; +import android.content.Context; + +import net.micode.notes.R; +import net.micode.notes.data.Notes; +import net.micode.notes.tool.ResourceParser; + +// NoteWidgetProvider_4x类继承自NoteWidgetProvider抽象类,它很可能是用于实现特定规格(从类名推测可能是4倍尺寸相关)笔记小部件的具体功能逻辑 +public class NoteWidgetProvider_4x extends NoteWidgetProvider { + + // 重写父类的onUpdate方法,该方法会在小部件需要进行更新时被系统调用 + // 在这里,它通过调用父类的update方法来执行具体的更新操作,将实际的更新细节交给父类中定义的update逻辑去处理 + @Override + public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) { + super.update(context, appWidgetManager, appWidgetIds); + } + + // 重写父类的抽象方法getLayoutId,此方法的作用是返回该类型小部件所对应的布局资源ID + // 这里返回的是R.layout.widget_4x,意味着该小部件在界面展示时会使用名为widget_4x的布局文件来进行布局设置 + protected int getLayoutId() { + return R.layout.widget_4x; + } + + // 重写父类的抽象方法getBgResourceId,其功能是根据传入的背景颜色ID来获取对应的背景资源ID + // 通过调用ResourceParser.WidgetBgResources类中的静态方法getWidget4xBgResource来获取相应的背景资源ID + // 表明该4x类型小部件获取背景资源的方式与特定的4x相关逻辑紧密相关(可能是适配4倍尺寸小部件的背景资源获取方式) + @Override + protected int getBgResourceId(int bgId) { + return ResourceParser.WidgetBgResources.getWidget4xBgResource(bgId); + } + + // 重写父类的抽象方法getWidgetType,用于返回该小部件的类型标识 + // 返回值为Notes.TYPE_WIDGET_4X,表示此小部件属于特定的4x类型(具体该类型在Notes类中的定义决定了其确切含义和用途) + @Override + protected int getWidgetType() { + return Notes.TYPE_WIDGET_4X; + } +} \ No newline at end of file diff --git a/w/w.txt b/w/w.txt new file mode 100644 index 0000000..9c74440 --- /dev/null +++ b/w/w.txt @@ -0,0 +1,166 @@ +/* + * 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. + */ + +// 包声明,该类所在的包名为net.micode.notes.widget +package net.micode.notes.widget; + +import android.app.PendingIntent; +import android.appwidget.AppWidgetManager; +import android.appwidget.AppWidgetProvider; +import android.content.ContentValues; +import android.content.Context; +import android.content.Intent; +import android.database.Cursor; +import android.util.Log; +import android.widget.RemoteViews; + +import net.micode.notes.R; +import net.micode.notes.data.Notes; +import net.micode.notes.data.Notes.NoteColumns; +import net.micode.notes.tool.ResourceParser; +import net.micode.notes.ui.NoteEditActivity; +import net.micode.notes.ui.NotesListActivity; + +// 抽象的AppWidgetProvider子类,用于为笔记相关的小部件提供功能支持 +// 注意它是抽象类,意味着具体功能需要由子类去实现特定的抽象方法 +public abstract class NoteWidgetProvider extends AppWidgetProvider { + + // 定义查询数据库时使用的投影(即要查询的列),用于获取笔记小部件相关信息 + // 包含笔记的ID、背景颜色ID以及内容摘要等列 + public static final String [] PROJECTION = new String [] { + NoteColumns.ID, + NoteColumns.BG_COLOR_ID, + NoteColumns.SNIPPET + }; + + // 定义列索引常量,方便后续从游标(Cursor)中获取对应列的数据 + public static final int COLUMN_ID = 0; + public static final int COLUMN_BG_COLOR_ID = 1; + public static final int COLUMN_SNIPPET = 2; + + // 用于日志输出的标签,方便在日志中识别该类相关的输出信息 + private static final String TAG = "NoteWidgetProvider"; + + // 当小部件被删除时调用的方法 + // 作用是将与被删除小部件相关的数据库记录中的WIDGET_ID设置为无效值 + // 这样表示对应的笔记不再与该小部件关联 + @Override + public void onDeleted(Context context, int[] appWidgetIds) { + ContentValues values = new ContentValues(); + // 设置要更新到数据库的WIDGET_ID为无效值 + values.put(NoteColumns.WIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID); + for (int i = 0; i < appWidgetIds.length; i++) { + // 通过ContentResolver更新数据库中对应的记录 + context.getContentResolver().update(Notes.CONTENT_NOTE_URI, + values, + NoteColumns.WIDGET_ID + "=?", + new String[] { String.valueOf(appWidgetIds[i])}); + } + } + + // 私有方法,用于获取与指定小部件ID相关的笔记小部件信息的游标(Cursor) + // 通过查询数据库,筛选出符合特定条件(小部件ID匹配且不属于回收站文件夹)的笔记记录 + private Cursor getNoteWidgetInfo(Context context, int widgetId) { + return context.getContentResolver().query(Notes.CONTENT_NOTE_URI, + PROJECTION, + NoteColumns.WIDGET_ID + "=? AND " + NoteColumns.PARENT_ID + "<>?", + new String[] { String.valueOf(widgetId), String.valueOf(Notes.ID_TRASH_FOLER) }, + null); + } + + // 用于更新小部件的方法,调用了另一个重载的update方法并传入默认的隐私模式参数(false) + protected void update(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) { + update(context, appWidgetManager, appWidgetIds, false); + } + + // 私有方法,真正执行小部件更新的逻辑 + // 根据传入的小部件ID数组,逐个更新对应的小部件显示内容和相关交互设置等 + private void update(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds, + boolean privacyMode) { + for (int i = 0; i < appWidgetIds.length; i++) { + // 检查小部件ID是否有效,如果无效则跳过该小部件的更新 + if (appWidgetIds[i]!= AppWidgetManager.INVALID_APPWIDGET_ID) { + int bgId = ResourceParser.getDefaultBgId(context); + String snippet = ""; + // 创建一个启动NoteEditActivity的意图(Intent),用于点击小部件文本时进行相应操作 + Intent intent = new Intent(context, NoteEditActivity.class); + intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP); + intent.putExtra(Notes.INTENT_EXTRA_WIDGET_ID, appWidgetIds[i]); + intent.putExtra(Notes.INTENT_EXTRA_WIDGET_TYPE, getWidgetType()); + + // 获取与当前小部件ID相关的笔记信息游标 + Cursor c = getNoteWidgetInfo(context, appWidgetIds[i]); + if (c!= null && c.moveToFirst()) { + // 如果查询到多条记录对应同一个小部件ID,则记录错误日志并关闭游标,返回不再继续更新 + if (c.getCount() > 1) { + Log.e(TAG, "Multiple message with same widget id:" + appWidgetIds[i]); + c.close(); + return; + } + // 从游标中获取内容摘要、背景颜色ID以及笔记ID等信息,并设置到相应变量和意图中 + snippet = c.getString(COLUMN_SNIPPET); + bgId = c.getInt(COLUMN_BG_COLOR_ID); + intent.putExtra(Intent.EXTRA_UID, c.getLong(COLUMN_ID)); + intent.setAction(Intent.ACTION_VIEW); + } else { + // 如果没有查询到对应笔记信息,则设置默认的提示文本,并设置意图的操作类型为插入或编辑 + snippet = context.getResources().getString(R.string.widget_havenot_content); + intent.setAction(Intent.ACTION_INSERT_OR_EDIT); + } + + // 关闭游标,释放资源 + if (c!= null) { + c.close(); + } + + // 创建RemoteViews对象,用于设置小部件的布局和显示内容 + RemoteViews rv = new RemoteViews(context.getPackageName(), getLayoutId()); + // 设置小部件背景图片资源ID + rv.setImageViewResource(R.id.widget_bg_image, getBgResourceId(bgId)); + intent.putExtra(Notes.INTENT_EXTRA_BACKGROUND_ID, bgId); + + // 根据隐私模式生成对应的PendingIntent,用于处理小部件点击事件 + PendingIntent pendingIntent = null; + if (privacyMode) { + // 如果是隐私模式,设置特定的提示文本,并创建启动NotesListActivity的PendingIntent + 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); + } else { + // 非隐私模式下,设置内容摘要文本,并创建基于前面创建的intent的PendingIntent + rv.setTextViewText(R.id.widget_text, snippet); + pendingIntent = PendingIntent.getActivity(context, appWidgetIds[i], intent, + PendingIntent.FLAG_UPDATE_CURRENT); + } + + // 设置小部件文本的点击事件PendingIntent + rv.setOnClickPendingIntent(R.id.widget_text, pendingIntent); + // 通过AppWidgetManager更新小部件的显示内容 + appWidgetManager.updateAppWidget(appWidgetIds[i], rv); + } + } + } + + // 抽象方法,由子类实现,用于根据给定的背景颜色ID获取对应的背景资源ID + protected abstract int getBgResourceId(int bgId); + + // 抽象方法,由子类实现,用于获取小部件对应的布局资源ID + protected abstract int getLayoutId(); + + // 抽象方法,由子类实现,用于获取小部件的类型 + protected abstract int getWidgetType(); +} \ No newline at end of file diff --git a/w/w2.txt b/w/w2.txt new file mode 100644 index 0000000..7a023d8 --- /dev/null +++ b/w/w2.txt @@ -0,0 +1,58 @@ +/* + * 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. + */ + +// 包声明,表明该类所在的包名为net.micode.notes.widget +package net.micode.notes.widget; + +import android.appwidget.AppWidgetManager; +import android.content.Context; + +import net.micode.notes.R; +import net.micode.notes.data.Notes; +import net.micode.notes.tool.ResourceParser; + +// NoteWidgetProvider_2x类继承自NoteWidgetProvider抽象类,用于实现特定类型(可能是2倍尺寸之类,从类名推测)小部件的具体功能 +public class NoteWidgetProvider_2x extends NoteWidgetProvider { + + // 重写父类的onUpdate方法,当小部件需要更新时会被调用 + // 这里直接调用了父类的update方法来执行实际的更新逻辑,将具体的更新操作委托给父类的相关实现 + @Override + public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) { + super.update(context, appWidgetManager, appWidgetIds); + } + + // 重写父类的抽象方法getLayoutId,用于返回该类型小部件对应的布局资源ID + // 这里返回的是R.layout.widget_2x,意味着该小部件使用名为widget_2x的布局文件来进行界面展示 + @Override + protected int getLayoutId() { + return R.layout.widget_2x; + } + + // 重写父类的抽象方法getBgResourceId,根据传入的背景颜色ID获取对应的背景资源ID + // 通过调用ResourceParser.WidgetBgResources类中的静态方法getWidget2xBgResource来获取相应资源ID + // 说明该小部件获取背景资源的方式与特定的2x相关逻辑有关(可能是适配2倍尺寸小部件的背景资源) + @Override + protected int getBgResourceId(int bgId) { + return ResourceParser.WidgetBgResources.getWidget2xBgResource(bgId); + } + + // 重写父类的抽象方法getWidgetType,用于返回该小部件的类型标识 + // 返回Notes.TYPE_WIDGET_2X,表示该小部件属于特定的2x类型(具体类型含义由Notes类中定义决定) + @Override + protected int getWidgetType() { + return Notes.TYPE_WIDGET_2X; + } +} \ No newline at end of file