google在android 5.0上加入了触摸反馈动画(Ripple),设置成功后,点击控件的时候会从点击位置产生一圈水波纹的扩散效果java
//波纹有边界 android:background="?android:attr/selectableItemBackground" //波纹能够扩散出边界 android:background="?android:attr/selectableItemBackgroundBorderless"
<?xml version="1.0" encoding="utf-8"?>
<ripple xmlns:tools="http://schemas.android.com/tools" android:color="@color/red" //默认的背景颜色 xmlns:android="http://schemas.android.com/apk/res/android" tools:targetApi="lollipop">
<item android:drawable="@color/blue" /> //按下时的水波纹颜色
</ripple>
if (Build.VERSION.SDK_INT > Build.VERSION_CODES.KITKAT) {
btnTest.setBackgroundResource(R.drawable.ripple);
}
ITDogFire –弓长剑鸣android