setBackgroundResource doesn't set the image

Question

    Handler hnd = new Handler() {

    @Override
    public void handleMessage(Message msg) {

        int id = sequence.get(msg.arg1);

        if(msg.arg1 % 2 == 0         


        

Answer 1

I would suggest you to use a handler

int drawablebkg[] ={R.drawable.ic_launcher,R.drawable.icon};
Handler m_handler;
Runnable m_handlerTask ; 
ImageView iv;
iv = (ImageView)findViewById(R.id.imageView1);
m_handler = new Handler(); 
   m_handlerTask = new Runnable()
    {
         @Override 
         public void run() {
             iv.setImageResource(android.R.color.transparent); 
            if(i<2)
            {

              ivsetBackgroundResource(drawablebkg[i]);
              i++;
            }
            else 
              {
                  i=0;
              }
              m_handler.postDelayed(m_handlerTask, 2000);
         }
    };
    m_handlerTask.run();  

In onPause() of your activity

 @Override
protected void onPause() {
    // TODO Auto-generated method stub
    super.onPause();

    //_t.cancel();
    m_handler.removeCallbacks(m_handlerTask);
}  

Another way

    iv= (ImageView)findViewById(R.id.imageView1);
    AnimationDrawable animation = new AnimationDrawable();
    animation.addFrame(getResources().getDrawable(R.drawable.ic_launcher), 2000);
    iv.setImageResource(android.R.color.transparent); 
    animation.addFrame(getResources().getDrawable(R.drawable.icon), 2000);

    animation.setOneShot(false);

    iv.setBackgroundDrawable(animation);
    //set setBackgroundDrawable(animation) is decprecreated i guess. not sure in which api

    // start the animation!
    animation.start();

Another way

Define background.xml in drawable folder

I your activity onCreate();

ImageView iv = (ImageView)findViewById(R.id.imageView1);
iv.setBackgroundResource(R.drawable.background);

AnimationDrawable animation= (AnimationDrawable)loadingRaven.getBackground();
loadingRaven.setImageResource(android.R.color.transparent); 
animation.start();

Note to stop the animation you need to call animation.stop()