UiHandler

public abstract class UiHandler extends Handler implements Runnable {

    public UiHandler(){
        super(Looper.getMainLooper());
    }

    public UiHandler(Handler.Callback callback){
        super(Looper.getMainLooper(), callback);
    }

    public boolean post(){
        return post(this);
    }

    public boolean postAtFrontOfQueue(){
        return postAtFrontOfQueue(this);
    }

    public boolean postAtTime(Object token, long uptimeMillis){
        return postAtTime(this, token, uptimeMillis);
    }

    public boolean postAtTime(long uptimeMillis){
        return postAtTime(this, uptimeMillis);
    }

    public boolean postDelayed(long delayMillis)
        return postDelayed(this, delayMillis);
    }

    public abstract void run();
}