Dynamic Background (on LinearLayout) - what is my error?

Question

I have a problem, I\'m trying to get my apps background to change, each ten seconds, based on a timer... I have done what i could and cant work it out as im a beginner to ja

Answer 1

layout.setBackgroundDrawable(getDrawable(images[index++]));

protected Drawable getDrawable(int i) {
    // TODO Auto-generated method stub
    return null;
}

This is the problem, you are setting null to the background.return some valid drawable and it will work.