1.在drawable文件下，新建seletor，作为button的背景，这里我用的是两个圆角的shape
<?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:drawable="@drawable/shape_btn_cycle_normal"/> <item android:state_pressed="true" android:drawable="@drawable/shape_btn_cycle_press"/> </selector>
shape_btn_cycle_normal
<?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"> <corners android:bottomLeftRadius="20dp" android:bottomRightRadius="20dp" android:topLeftRadius="20dp" android:topRightRadius="20dp"/> <solid android:color="@color/colorWhite"/> </shape>
shape_btn_cycle_press
<?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"> <corners android:bottomLeftRadius="20dp" android:bottomRightRadius="20dp" android:topLeftRadius="20dp" android:topRightRadius="20dp"/> <solid android:color="@color/colorGray"/> </shape>
2.在drawable-v21下，新建同selector名的ripple，如上，我的selector是selector_btn_cycle_bg,这里drawable-v21下新建selector_btn_cycle_bg.xml
<?xml version="1.0" encoding="utf-8"?> <ripple xmlns:android="http://schemas.android.com/apk/res/android" android:color="@color/colorGray"> //选中的水波纹的颜色 <item android:drawable="@drawable/shape_btn_cycle_normal"/>//未选中的背景状态 </ripple>