Android淡出至新视图

Question

I have an ImageView. When I change its image resource, I want to fade to the new resource. (I don't want the old resource to fade out and the new one to fade in; I want the new one to already be in the background and the old image to fade out, revealing the new image.) Is there a way to do this with only one View? I don't want to use two stacked Views because I need to do this with enough images that it would be bad for performance. Right now, I just have the basics:

fadeout animation

<?xml version="1.0" encoding="UTF-8"?>
<alpha xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/accelerate_interpolator"
    android:fromAlpha="1.0" android:toAlpha="0.0" />

using fadeout animation on the View

Animation fadeout = AnimationUtils.loadAnimation(this, R.anim.fadeout);
fadeout.setDuration(0);
boardView[location].startAnimation(fadeout);

Now, I need to somehow make the new image appear in the background as the View is fading out. Is this possible without adding a second View in the background?

Answer 1

ObjectAnimator alphaAnimation = ObjectAnimator.ofFloat(view, View.ALPHA, 1,0);

This would be the one of the way to do fade in/out animation. You just needs to the pass the view to which perform the animation, objectAnimator supports from honeycomb version