在drable-v21下写入这个代码
<?xml version="1.0" encoding="utf-8"?>
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
android:color="@color/ripple_color"
android:radius="@dimen/dialog_button_inset_vertical"> <!--波纹颜色-->
<item>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<corners android:radius="14dp" />
<solid android:color="@color/quanzi_blue_btn_bg" />
</shape>
</item>
</ripple>
在drable下 放入shape即可