1.在res/values下创建attrs.xml
- <declare-styleable name="MyRadioButton">
- <attr name="str" format="string"/>
- </declare-styleable>
MyRadioButton为组件名字,随意起,attr标签定义组件的属性,name对应的是属性名,format是属性的类型,具体可参见《[Android]attrs.xml文件中属性类型format值的格式》。
2.在自定义的组件中使用attrs.xml文件的定义
- public class MyRadioButton extends RadioButton {
- private String url;
- public MyRadioButton(Context context, AttributeSet attrs) {
- super(context, attrs);
- TypedArray taArray = context.obtainStyledAttributes(attrs,R.styleable.MyRadioButton);
- this.url = taArray.getString(R.styleable.MyRadioButton_str);
- taArray.recycle();
- }
- public String getUrl() {
- return url;
- }
- public void setUrl(String url) {
- this.url = url;
- }
- }
a. TypedArray是存放资源R.styleable.MyRadioButton指定的属性集合。
b. 通过getXXX()获取属性值。
c. recycle()结束绑定
3.在布局文件中使用
- <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
- xmlns:demo="http://schemas.android.com/apk/res/net.csdn.blog.wxg630815"
- android:layout_width="fill_parent"
- android:layout_height="fill_parent"
- android:orientation="vertical" >
- <RadioGroup
- android:layout_width="fill_parent"
- android:layout_height="wrap_content"
- >
- <net.csdn.blog.wxg630815.MyRadioButton
- android:layout_width="fill_parent"
- android:layout_height="wrap_content"
- android:id="@+id/myradio1"
- demo:str="1.csdn.net"
- />
- <net.csdn.blog.wxg630815.MyRadioButton
- android:layout_width="fill_parent"
- android:layout_height="wrap_parent"
- android:id="@+id/myradio2"
- demo:str="2.csdn.net"
- />
- </RadioGroup>
- </LinearLayout>