How to toggle background image on button click?

Question

I have this code:

button1.setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
          


        

Answer 1

How about creating an array of the drawable's IDs and saving an index:

private final int[] myDrawables = {R.drawable.detailpressed, R.drawable.detailpressed1, ...};
//...
button1.setOnClickListener(new OnClickListener() {
    int index = 0;
    @Override
    public void onClick(View v) {
        button1.setBackgroundResource(myDrawables[index++ % myDrawables.length]);
        Chapter_sync.add(chapid);
    }
}