android 自定义属性使用

1.属性声明

 <declare-styleable name="MyNumberPicker">    <attr name="my_Height" format="reference|dimension" />    <attr name="my_ShowDivider" format="reference|boolean" />    <attr name="my_Color" format="reference|color" /> </declare-styleable>

2.布局文件中引用

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical">    <com.zcn.numberpicker.MyNumberPicker        app:my_Height="160dp"        app:my_ShowDivider="true"        app:my_Color="@color/white"/></RelativeLayout>

3.在style中引用
注：属性前千万不要加入app命名空间

<style name="MyNumberPicker">    <item name="my_Height">160dp</item>    <item name="my_ShowDivider">true</item>    <item name="my_Color">@color/white</item></style>