广播
- Intent.ACTION_TIME_TICK
Broadcast Action: The current time has changed. Sent every minute. You can not receive this through components declared in manifests, only by exlicitly registering for it withContext.registerReceiver()
意思是说这个广播动作是以每分钟一次的形式发送。但你不能通过在manifest.xml里注册的方式接收到这个广播,只能在代码里通过registerReceiver()方法注册。根据此我们可以每分钟检查一次Service的运行状态,如果已经被结束了,就重新启动Service。
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Intent.ACTION_TIME_TICK)) {
// 检查Service状态
boolean isServiceRunning = false;
ActivityManager manager = (ActivityManager) app
.getApplicationContext().getSystemService(
Context.ACTIVITY_SERVICE);
//获取正在运行的服务去比较
for (RunningServiceInfo service : manager
.getRunningServices(Integer.MAX_VALUE)) {
Log.i("Running", service.service.getClassName());
if ("com.example.android_service.MyService"
.equals(service.service.getClassName()))
// Service的类名
{
isServiceRunning = true;
}
}
Log.i("isRunning", isServiceRunning + "");
if (!isServiceRunning) {
Log.i("isRunningOK", isServiceRunning + "");
Intent i = new Intent(context, MyService.class);
app.getApplicationContext().startService(i);
}
}
}
获取的是正在运行的服务 用我们的服务去比较