Android-Timer Service-timer

Note: In a project, sometimes there may be some scheduled tasks, at which point a timer is typically written in a service.

Cases:

Service class:

Import Java.util.Timer;

Import Java.util.TimerTask;

Import Android.app.Service;

Import android.content.Intent;

Import Android.os.IBinder;

public class Timerservice extends Service {

Timer timer; Timer

TimerTask task;//timed execution of tasks

@Override

Public IBinder Onbind (Intent Intent) {

return null;

}

@Override

public void OnCreate () {

Timer = new timer ();

task = new TimerTask () {

@Override

public void Run () {

try {

Thread.Sleep (1000);

System.out.println ("performed a timed task");

} catch (Interruptedexception e) {

E.printstacktrace ();

}

}

};

Parameter description: 1, Task 2, delay the specified time after the start of execution 3, repeat the task at the specified frequency

Timer.scheduleatfixedrate (Task, 1000, 1000);

Super.oncreate ();

}

@Override

public void OnDestroy () {

SYSTEM.OUT.PRINTLN ("Stop timed Task");

Timer.cancel ();

Task.cancel ();

Super.ondestroy ();

}

}

Use:

Import android.app.Activity;

Import android.content.Intent;

Import Android.os.Bundle;

Import Android.view.View;

Import Android.view.View.OnClickListener;

Import Android.widget.Button;

public class Mainactivity extends Activity {

Button Btn_start;

Button Btn_stop;

@Override

protected void OnCreate (Bundle savedinstancestate) {

Super.oncreate (savedinstancestate);

Setcontentview (R.layout.activity_main);

Final Intent Intent =new Intent (Mainactivity.this, Timerservice.class);

Btn_start = (Button) Findviewbyid (R.id.btn_start);

Btn_stop = (Button) Findviewbyid (r.id.btn_stop);

Btn_start.setonclicklistener (New Onclicklistener () {

@Override

public void OnClick (View v) {

StartService (Intent);

}

});

Btn_stop.setonclicklistener (New Onclicklistener () {

@Override

public void OnClick (View v) {

StopService (Intent);

}

});

}

}

Android-Timer Service-timer