Android在特定时间后开始/停止重复线程

Question

I need a thread repeating after 30 seconds that load data from web service. i want to stop and start thread onResume and onPause so that it runs when screen is active and disable it when activity paused. Restart on resume.

new Handler().postDelayed(new Runnable() {

        @Override
        public void run() {
            dataIfInternet(refreshTop);
        }

    }, 30000);

How to stop it when activity paused.

Answer 1

U can't pause the handler, so u need to cancel it in your onPause and post in again in your onResume

so u probably want something like this:

private Handler myHandler = new Handler();

in your onResume()

Runnable myRunnable = new Runnable()
{
    @Override
    public void run() 
    {
        dataIfInternet(refreshTop);
    }
};
myHandler.postDelayed(myRunnable, 30000);

and in your onPause()

// Cancel the runnable
myHandler.removeCallbacks(myRunnable);

I hope this solves your problem