android 触发AppWidget上控件事件来更新AppWidget

思想：利用AppWidgetProvider里面的onReceive()事件接收广播来更新AppWidget。

步骤：

一、给AppWidget上的某个控件设置OnClickPendingIntent():

Intent UPintent=new Intent("zyf.test.widget.UP");

PendingIntent pendingIntentUp=PendingIntent.getBroadcast(context, 0, UPintent, 0);

views.setOnClickPendingIntent(R.id.widget_BT_Up, pendingIntentUp);

Intent UPintent=new Intent("zyf.test.widget.UP");

PendingIntent pendingIntentUp=PendingIntent.getBroadcast(context, 0, UPintent, 0);

views.setOnClickPendingIntent(R.id.widget_BT_Up, pendingIntentUp);

二、设置AppWidget的intent-filter:

<receiver android:name="AppWidget">

<intent-filter>

<action android:name="android.appwidget.action.APPWIDGET_UPDATE"></action>

<action android:name="zyf.test.widget.UP"></action>

<action android:name="zyf.test.widget.DOWN"></action>

</intent-filter>

<meta-data android:resource="@xml/appwidget" android:name="android.appwidget.provider"></meta-data>

</receiver>

<receiver android:name="AppWidget">

<intent-filter>

<action android:name="android.appwidget.action.APPWIDGET_UPDATE"></action>

<action android:name="zyf.test.widget.UP"></action>

<action android:name="zyf.test.widget.DOWN"></action>

</intent-filter>

<meta-data android:resource="@xml/appwidget" android:name="android.appwidget.provider"></meta-data>

</receiver>

三、在onReceive()中判断;

super.onReceive(context, intent);

if(intent.getAction().equals("zyf.test.widget.UP")){

//处理

}