Widget与service利用BroadcastReceiver通信
Widget与service通信一直是个难点，在网上发现一位仁兄的方法不错，特来分享：
AppWidgetProvider中要注册intent主要是为了处理点击事件，或者是更新widgets中的数据，接受来自应用中数据的改变消息。
通常我们会创建一个Service,在Service中注册，处理intent.下面的注册，接收时间改变的消息
public class WidgetService extends Service{
private WidgetsProvider mAppWidgetProvider = WidgetsProvider .getInstance();//widgets事例
private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {//广播消息的处理
@Override
public void onReceive(Context context, Intent intent) {
if(Intent.ACTION_TIMEZONE_CHANGED.equals(intent.getAction())||Intent.ACTION_TIME_TICK.equals(intent.getAction())||Intent.ACTION_TIME_CHANGED.equals(intent.getAction()))
{
notifyChange(Intent.ACTION_TIMEZONE_CHANGED);
}
}
};
@Override
public void onCreate() {
super.onCreate();
//消息的注册
IntentFilter commandFilter = new IntentFilter();
commandFilter.addAction(Intent.ACTION_TIME_TICK);
commandFilter.addAction(Intent.ACTION_TIME_CHANGED);
commandFilter.addAction(Intent.ACTION_TIMEZONE_CHANGED);
getBaseContext().registerReceiver(mIntentReceiver, commandFilter);
}
@Override
public void onDestroy() {
//注销
unregisterReceiver(mIntentReceiver);
super.onDestroy();
}
lcbjzl2.cn.zhongsou.net
wzbjzw3.cn.zhongsou.net
labjzl4.cn.zhongsou.net
czbjzc8.cn.zhongsou.net
lfbjzl3.cn.zhongsou.net
whbjzw6.cn.zhongsou.net
qdbjzq3.cn.zhongsou.net
ycbjzy5.cn.zhongsou.net
ylbjzy1.cn.zhongsou.net
csbjzc1.cn.zhongsou.net
hebbjz4.cn.zhongsou.net
ncbjzn4.cn.zhongsou.net
ykbjzy1.cn.zhongsou.net
xybjzx4.cn.zhongsou.net
xmbjzx2.cn.zhongsou.net
fzbjzf4.cn.zhongsou.net
wzbjzw4.cn.zhongsou.net
sxbjzs1.cn.zhongsou.net
hzbjzh6.cn.zhongsou.net
jnbjzj3.cn.zhongsou.net
dybjzd4.cn.zhongsou.net
hfbjzh4.cn.zhongsou.net
labjzz.cn.zhongsou.net
czbjzc9.cn.zhongsou.net
czbjzc10.cn.zhongsou.net
zzbjzz9.cn.zhongsou.net
jcbjzj4.cn.zhongsou.net
nbbjzn6.cn.zhongsou.net
nbbjzn7.cn.zhongsou.net
wzbjzb.cn.zhongsou.net
sxbjzs2.cn.zhongsou.net
hzbjzz1.cn.zhongsou.net
jhbjzj1.cn.zhongsou.net
jnbjzj4.cn.zhongsou.net
lybjzz.cn.zhongsou.net
qdbjzt.cn.zhongsou.net
whbjzw7.cn.zhongsou.net
dybjzd5.cn.zhongsou.net
ytbjzy2.cn.zhongsou.net
wfbjzw1.cn.zhongsou.net
hzbjzh7.cn.zhongsou.net
@Override
public IBinder onBind(Intent intent) {
return null;
}
private void notifyChange(String what) {
mAppWidgetProvider.notifyChange(this, what);//widgets中消息的处理
}
@Override
public void onStart(Intent intent, int startId) {
}
}
由于service是要通过事件来启动，我们通常是在点击事件中来启动它，如何你在widgets中想程序启动就启动service你需要这样做：
Intent mrunningService = new Intent(context, WorldClockWidgetService.class);
// To prevent any ANR timeouts, we perform the update in a service
context.startService(mrunningService);