android button 圆角与点击效果

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true">
<shape
android:shape="rectangle">

<solid android:color="#50ff4200"/>

<corners android:radius="5dp"/>

<padding
android:bottom="5dp"
android:left="15dp"
android:right="15dp"
android:top="5dp">
</padding>

</shape>
</item>

<item android:state_pressed="false">
<shape
android:shape="rectangle">

<solid android:color="#ff4200"/>

<corners android:radius="5dp"/>

<padding
android:bottom="5dp"
android:left="15dp"
android:right="15dp"
android:top="5dp">
</padding>

</shape>
</item>
</selector>