How To Remove Background From Thread

I am using Timer to check a condition periodically and want to remove background if found true condition. But it is giving me an error. android.view.ViewRootImpl$CalledFromWrongTh

Solution 1:

Hi you can use at least two methods to do that:

1. runOnUIThread Activity's method

runOnUiThread(new Runnable(){
     publicvoidrun() {
          // UI code goes here
     }
});

2. Handler

Handler handler = new Handler(Looper.getMainLooper());
handler.post(new Runnable() {
     publicvoidrun() {
          // UI code goes here
     }
});

Solution 2:

Use handler to touch views in main thread like that:

HandlermHandler=newHandler();

t.schedule(newTimerTask(){

mHandler.post(newTimerTask(){

        @Overridepublicvoidrun() {

            if(!active){
                fl.setBackgroundResource(android.R.color.transparent);// this line causing error !

            }
        }
        });
        }, 500,500);