android declare-styleableの使用

<pre name="code" class="html"><?xml version="1.0" encoding="utf-8"?>
<resources>

    <declare-styleable name="TestAttr">
        <attr name="name" format="reference" />
        <attr name="age">
            <flag name="child" value="10" />
            <flag name="young" value="18" />
            <flag name="oldman" value="60" />
        </attr>
        <attr name="textSize" format="dimension" />   
    </declare-styleable>
</resources>

 
 
 
  
 
reference     string.xml    
flag      ,    android:gravity="top"
  
dimension      dimension.xml        .  ,     dp        
  
 
 
 2.在布局文件里的写法
 
 
<pre name="code" class="html"><?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:attrstest="http://schemas.android.com/apk/res/com.arlos.attrstest"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >s

    <com.arlos.attrstest.MyTestView
        android:id="@+id/tvTest"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        attrstest:name="@string/myname" 
        android:gravity="top"
        attrstest:age="young"
        attrstest:textSize="@dimen/aa"
        android:text="@string/hello" />

</LinearLayout>
  
2.1まずこのdtdを  する
xmlns:attrstest="http://schemas.android.com/apk/res/com.arlos.attrstest"
  
attrstest     .               .    manifest  com.arlos.attrstest
  
2.2            
  
 
 
3.                 
public class MyTestView extends TextView {

    public MyTestView(Context context, AttributeSet attrs) {
        super(context, attrs);

        TypedArray tArray = context.obtainStyledAttributes(attrs,
                R.styleable.TestAttr);
        String name = tArray.getString(R.styleable.TestAttr_name);
        System.out.println("name = " + name);
        int age = tArray.getInt(R.styleable.TestAttr_age, 200);
        System.out.println("age = " + age);
         float demin = tArray.getDimension(R.styleable.TestAttr_textSize,0);
         System.out.println("demin = " + demin);
        tArray.recycle();
    }
}