Runnable is posted successfully but not run

Question

In an existing Android project I\'ve encountered the following piece of code (where I inserted the debugging litter)

ImageView img = null;

public void onCre         


        

Answer 1

Use the following code, can post your code to MainThread anytime anywhere, but not depends any Context or Activity. That can prevent view.getHandler() failure or tedious onAttachedToWindow() stuffs etc.

    new Handler(Looper.getMainLooper()).post(new Runnable() {
        @Override
        public void run() {
            //TODO
        }
    });