reference指的是是从string.xml引用过来
flag是自己定义的,类似于android:gravity="top"
dimension 指的是是从dimension.xml里引用过来的内容.注意,这里如果是dp那就会做像素转换
2.在布局文件里的写法
?xml version="1.0" encoding="utf-8"? LinearLayout xmlns:andro 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: android:layout_width="fill_parent" android:layout_height="wrap_content" attrstest: android:gravity="top" attrstest:age="young" attrstest:textSize="@dimen/aa" android:text="@string/hello" / /LinearLayout
2.1先引用这个dtd
xmlns:attrstest="http://schemas.android.com/apk/res/com.arlos.attrstest"
attrstest是随便写的.后面的包名是你所在的项目的根包.也就是在manifest里的com.arlos.attrstest
2.2 在自定义的控件里写属性
3. 最后在控件的构造方法里取得这些值
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();}