I am trying to animate alpha
of an Android view (two animations, both fade in and fade out). It all works fine if the view's alpha is initially 1, by default. However, I want that view to be transparent initially, hence I've set it's alpha to zero:
indicatorContainer.setAlpha(0);
Now, the animations won't work. It will never become visible. If I comment out that line, the view is initially displayed (which I don't want), but my animations works fine when I invoke them. I though it's something trivial but apparently it's not. What am I doing wrong?
UPDATE: I've also tried a floating point 0f
instead of integer 0
after reading some API changes involving the setAlpha
method, thinking that my call may be calling the incorrect overload, but nothing changed.
Try something like this:
mRelativeLayout.setAlpha(0f);
mRelativeLayout.animate().alpha(1f).setDuration(500).setListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
super.onAnimationEnd(animation);
mRelativeLayout.setVisibility(View.VISIBLE);
//OR
mRelativeLayout.setAlpha(1f);
}
});