<?xml version="1.0" encoding="utf-8"?>
<resources>
<attr name="duration">
</attr>
<declare-styleable name="AlphaImageView">
<attr name="duration"/>
</declare-styleable>
</resources>
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在主界面中定义了AlphaImageView
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:crazyit="http://schemas.android.com/apk/res/org.crazyit.res"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<org.crazyit.res.AlphaImageView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:src="@drawable/ic_launcher"
crazyit:duration="60000"<!-- 将其属性值设为60000 -->
/>
</LinearLayout>
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可是在AlphaImageView 的构造函数中，无法取出duration的值，代码如下：
public AlphaImageView(Context context, AttributeSet attrs)
{
super(context, attrs);
TypedArray typedArray = context.obtainStyledAttributes(attrs,
R.styleable.AlphaImageView);
//获取duration参数
int duration = typedArray.getInt(
R.styleable.AlphaImageView_duration , 0);
//计算图像透明度每次改变的大小
alphaDelta = 255 * SPEED / duration;//duration值为0，不知何原因
}
----------------------------------------------------------------------------------------------
不知是没有存入属性值，还是取值错误，请各位大侠帮帮忙，谢谢
