<declare-styleable name="CustomTextView">
<attr name="titleText" format="string"></attr>
<attr name="titleTextColor" format="color"></attr>
<attr name="titleTextSize" format="dimension"></attr>
</declare-styleable>
注意：
(1) name 不是 android:name
(2) format一共有：string, color, dimension, integer, enum, reference, float, boolean, fraction, flag,各个类型的含义可以参考这个文章：http://blog.csdn.net/ethan_xue/article/details/7315064
２. 在XML引用(引入命名空间，注意最后是包名)：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:custom="http://schemas.android.com/apk/res/com.zmq.test"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="vertical" >
<com.geak.test.CustomTextView
android:layout_width="120dip"
android:layout_height="120dip"
android:background="#ffffff"
custom:titleText="ABCDEFG"
custom:titleTextColor="#00ff00"
custom:titleTextSize="13sp">
</com.geak.test.CustomTextView>
</LinearLayout>
３. 初始化构造函数差读取自定义属性值：
public class CustomTextView extends TextView {
private String text;
private int color;
private int size;
public CustomTextView(Context context) {
this(context, null);
}
public CustomTextView(Context context, AttributeSet attrs) {// 此构造函数必走
this(context, attrs, 0);
}
public CustomTextView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, 0);
TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.CustomTextView, defStyle, 0);
text = a.getString(R.styleable.CustomTextView_titleText);
color = a.getColor(R.styleable.CustomTextView_titleTextColor, Color.BLACK);
size = a.getDimensionPixelSize(R.styleable.CustomTextView_titleTextSize, 13);
setText(text);
setTextColor(color);
setTextSize(size);
a.recycle();
}
}