How do I set an Android View's transparency with animation?

问题

I need to set the initial transparency for a TextView, but I don't know how to do it. On iPhone/iOS, it can be done easily with the alpha property. On Android, I've tried to set the alpha using AlphaAnimation but it's no good -- it doesn't work. It just returns to 100% alpha when the animation ends.

AlphaAnimation anim = new AlphaAnimation(1, 0.2f);
anim.setDuration(5000);
textView.startAnimation(anim);

Any ideas guys?

回答1:

You can set the alpha channel directly in a color value that you assign to the TextView. See Available Resource Types.

来源：https://stackoverflow.com/questions/2180677/how-do-i-set-an-android-views-transparency-with-animation