import android.app.AlarmManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Intent;
import android.os.Handler;
import android.os.IBinder;
import android.os.SystemClock;
import java.util.Timer;
import java.util.TimerTask;
public class MyService extends Service {
private Runnable runnable;
private Handler handler;
private int Time = 1000*3;//cycle time
private int anHour =8*60*60*1000;// This is the number of milliseconds in 8 hours. In order to consume less traffic and power, it is automatically updated once every 8 hours
private Timer timer = new Timer ();
@Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}
@Override
public void onCreate() {
super.onCreate();
/**
* Method 1: Use Handler's postDelayed(Runnable, long) method
*/
handler = new Handler ();
runnable = new Runnable() {
@Override
public void run() {
// handler has its own method to implement timer
System.out.println("33331");
handler.postDelayed(this, 1000*3);//Execute every 3s
}
};
handler.postDelayed(runnable, 1000*60);//How long to delay to start the timer
/**
* Method 2: Using the combination of timer and TimerTask
*/
TimerTask timerTask = new TimerTask() {
@Override
public void run() {
System.out.println("99999998");
}
};
timer.schedule(timerTask,
1000, // delay 1 second execution
Time);//cycle time
}
/**
* Method 3: Using the AlarmManager mechanism
*/
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
new Thread(new Runnable() {
@Override
public void run() {
System.out.println("99999988");//This is a scheduled task
}
}).start();
AlarmManager manager = (AlarmManager) getSystemService(ALARM_SERVICE);
long triggerAtTime = SystemClock.elapsedRealtime() + anHour;
Intent intent2 = new Intent(this, AutoUpdateReceiver.class);
PendingIntent pi = PendingIntent.getBroadcast(this, 0, intent2, 0);
manager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, triggerAtTime, pi);
return super.onStartCommand(intent, flags, startId);
}
@Override
public void onDestroy() {
super.onDestroy ();
}
}
public class AutoUpdateReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
Intent i = new Intent(context, MyService.class);
context.startService(i);
}
}
Remember to register for broadcasts and services, and it is recommended to use method three.