Animate ImageView from alpha 0 to 1

Question

I have an imageView that I want to start as invisible. After a certain button is clicked, I want to animate the Image into view and then I want it to remain at alpha 1. How do I

Answer 1

Try to make your ImageView invisible in xml:

Then, by adding an AnimationListener, make it visible in onAnimationStart:

...
animation1.setFillAfter(true);
animation1.setAnimationListener(new AnimationListener() {
    @Override
    public void onAnimationStart(Animation animation) {
        // pass it visible before starting the animation
        tokenBtn.setVisibility(View.VISIBLE);
    }

    @Override
    public void onAnimationRepeat(Animation animation) {    }
    @Override
    public void onAnimationEnd(Animation animation) {    }
});
// finally, start the animation
tokenBtn.startAnimation(animation1);