下面是一个简单的例子:
结构图：
myview.java
package kexc.myview;
import android.content.context;
import android.content.res.typedarray;
import android.util.attributeset;
import android.widget.textview;
public class myview extends textview {
private string mstring = "welcome to kesion's blog";
public myview(context context, attributeset attrs) {
super(context, attrs);
typedarray a = context.obtainstyledattributes(attrs,
r.styleable.myview);
int textcolor = a.getcolor(r.styleable.myview_textcolor,
0xffffffff);
float textsize = a.getdimension(r.styleable.myview_textsize, 36);
mstring = a.getstring(r.styleable.myview_title);
settext(mstring);
settextsize(textsize);
settextcolor(textcolor);
}
}
main.xml
<?xml version="1.0" encoding="utf-8"?>
<linearlayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<textview
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
<kexc.myview.myview
android:layout_height="fill_parent"
test:title="wo shi text"
test:textsize="20px"
test:textcolor="#fff"
/>
</linearlayout>
属性文件 value/attrs.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="myview">
<attr name="textcolor" format="color"/>
<attr name="textsize" format="dimension" />
<attr name="title" format="string"/>
</declare-styleable>
</resources>
运行结果：