android 設定透明動畫

首先在res/anin創建檔案


1.

	fadein.xml
	<?xml version="1.0" encoding="utf-8"?>
	<alpha xmlns:android="http://schemas.android.com/apk/res/android"
	android:interpolator="@android:anim/decelerate_interpolator"
	android:fromAlpha="0.0"
	android:toAlpha="1.0"
	android:fillAfter="true"
	android:duration="200"/>
	fadeout.xml
	<?xml version="1.0" encoding="utf-8"?>
	<alpha xmlns:android="http://schemas.android.com/apk/res/android"
	android:interpolator="@android:anim/decelerate_interpolator"
	android:fromAlpha="1.0"
	android:toAlpha="0.0"
	android:fillAfter="true"
	android:duration="200"/>

view raw alpha.xml hosted with ❤ by GitHub

在main activity裡面建立
2.

	private void fadeoutXml(){
	Animation animation= AnimationUtils.loadAnimation(this,
	R.anim.alpha_fadeout);
	imageView.startAnimation(animation);
	}
	private void fadeinXml(){
	Animation animation= AnimationUtils.loadAnimation(this,
	R.anim.alpha_fadein);
	imageView.startAnimation(animation);
	}

view raw animator.java hosted with ❤ by GitHub