Trying to add a help overlay to our app. This overlay is a RelativeLayout with translucent background and it contains a few TextView and a few ImageView child elements. Now, i want each of the TextView / ImageView to fade-in one after another.
I am using a fade-in animation set (defined in the XML) and calling .startAnimation() on each view in the AnimationListener's OnAnimationEnd method. So, when the first View is done fading-in, i call the startAnimation method on the next view to be faded-in. I am using the same Animation object (animationFadeIn) as argument to startAnimation of all the views. Like so:
...
Animation animationFadeIn = AnimationUtils.loadAnimation(this.context, R.anim.fadein);
...
AnimationListener animationInListener = new AnimationListener(){
@Override
public void onAnimationEnd(Animation animation) {
animation_activity++;
switch(animation_activity) {
case SHOW_TEXT_DROP:
txtDrop.startAnimation(animationFadeIn);
break;
case SHOW_TEXT_SEND:
txtSend.startAnimation(animationFadeIn);
break;
case SHOW_IMAGE_TOUCH:
imgTouch.startAnimation(animationFadeIn);
break;
case SHOW_TEXT_DISABLE:
txtDisable.startAnimation(animationFadeIn);
break;
}
}
};
For fade-in animation, i referred this tutorial
Now, here's the problem:
- First view fades-in
- Second view fades-in, but first view fades-in again as well along with it
- Same continues until all the views are done fading-in
Also, how do i add some delay before the next view fades-in setStartOffset ?
UPDATE
I noticed that if i create a second Animation object by
animationFadeIn2 = AnimationUtils.loadAnimation(this.context, R.anim.fadein);
and then use it for the startAnimation of other element, then it does not create this issue. So, i believe, there must be some property to be set on the Animation object so as to avoid this ?
