实现android小窗口部件

package com.genius.col; import java.util.ArrayList; import java.util.Timer; import java.util.TimerTask; import android.appwidget.AppWidgetManager; import android.appwidget.AppWidgetProvider; import android.content.Context; import android.widget.RemoteViews; public class AppClockWidgetProvider extends AppWidgetProvider{ private static RemoteViews mRemoteViews; private static Timer mTimer; // mAppWidgetArray 保存窗口部件实例的数组 private static ArrayList<int[]> mAppWidgetArray = new ArrayList<int[]>(); // 当最后一个窗口部件实例被移除时调用 public void onDisabled(Context context) { // TODO Auto-generated method stub super.onDisabled(context); stopTimerTask(); } // 当第一个窗口部件实例被创建时调用 public void onEnabled(Context context) { // TODO Auto-generated method stub super.onEnabled(context); startTimerTask(context); } // 窗口部件实例创建时调用 public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) { // TODO Auto-generated method stub super.onUpdate(context, appWidgetManager, appWidgetIds); updateAppWidget(context, appWidgetManager, appWidgetIds); addInstance(appWidgetIds); } // 窗口部件实例删除时调用 public void onDeleted(Context context, int[] appWidgetIds) { // TODO Auto-generated method stub super.onDeleted(context, appWidgetIds); removeInstance(appWidgetIds); } // 更新单个窗口部件实例 public static void updateAppWidget(Context context, AppWidgetManager appWidgeManger, int []appWidgetIds) { mRemoteViews = new RemoteViews(context.getPackageName(), R.layout.main); MyTimeAdapter timeAdapter = new MyTimeAdapter(); String timeString = timeAdapter.formatTime(); mRemoteViews.setTextViewText(R.id.myTextView, timeString); appWidgeManger.updateAppWidget(appWidgetIds, mRemoteViews); } // 更新所有窗口部件实例 public static void RefreshAllWidget(Context context){ AppWidgetManager appWidgetManger = AppWidgetManager.getInstance(context); int instanceCount = mAppWidgetArray.size(); for(int i = 0; i < instanceCount; i++){ int[]appWidgetIds = mAppWidgetArray.get(i); updateAppWidget(context, appWidgetManger, appWidgetIds); } } // 增加窗口部件实例 public static void addInstance(int[] appWidgetIds){ if (mAppWidgetArray != null){ mAppWidgetArray.add(appWidgetIds); } } // 删除窗口部件实例 public static void removeInstance(int[] appWidgetIds){ if (mAppWidgetArray != null){ mAppWidgetArray.remove(appWidgetIds); } } // 开启刷新窗口部件的定时器 public static void startTimerTask(final Context context){ if (mTimer == null){ mTimer = new Timer(); TimerTask mTimerTask = new TimerTask() { @Override public void run() { // TODO Auto-generated method stub AppClockWidgetProvider.RefreshAllWidget(context); } }; mTimer.schedule(mTimerTask, 0, 1000); } } // 关闭刷新窗口部件的定时器 public static void stopTimerTask(){ if (mTimer != null){ mTimer.cancel(); mTimer = null; } } }