Android——ViewGroup的一个用法实例(转载)

找了很久，终于找到了。

Xml代码  

1. <?xml version="1.0" encoding="UTF-8" ?>
2. <merge  xmlns:android="http://schemas.android.com/apk/res/android"
3. xmlns:okCancelBar="http://schemas.android.com/apk/res/com.example.android.merge">
4. <ImageView
5. android:layout_width="fill_parent"
6. android:layout_height="fill_parent"
7. android:scaleType="center"
8. android:src="@drawable/golden_gate"
9. />
10. <com.example.android.merge.OkCancelBar
11. android:layout_width="fill_parent"
12. android:layout_height="wrap_content"
13. android:layout_gravity="bottom"
14. android:paddingTop="8dip"
15. android:gravity="center_horizontal"
16. android:background="#AA000000"
17. okCancelBar:okLabel="Save"
18. okCancelBar:cancelLabel="Don‘t save"
19. />
20. </merge>

com.example.android.merge.OkCancelBar是一个自定义的GROUP

Java代码  

1. public class OkCancelBar extends LinearLayout{
2. public OkCancelBar(Context context,AttributeSet attrs){
3. super(context, attrs);
4. setOrientation(HORIZONTAL);
5. setGravity(Gravity.CENTER);
6. setWeightSum(1.0f);
7. LayoutInflater.from(context).inflate(R.layout.okcancelbar,this,true);
8. TypedArray array= context.obtainStyledAttributes(attrs, R.styleable.OkCancelBar,0,0);
9. String text= array.getString(R.styleable.OkCancelBar_okLabel);
10. if(text==null) text="Ok";
11. ((Button) findViewById(R.id.okcancelbar_ok)).setText(text);
12. text= array.getString(R.styleable.OkCancelBar_cancelLabel);
13. if(text==null) text="Cancel";
14. ((Button) findViewById(R.id.okcancelbar_cancel)).setText(text);
15. array.recycle();
16. }
17. }

LayoutInflater.from(context).inflate(R.layout.okcancelbar,this,true);

直接从XML中得到一个VIEW加入到当前GROUP中

okcancelbar.xml:

Xml代码  

1. <merge xmlns:android="http://schemas.android.com/apk/res/android">
2. <include layout="@layout/okcancelbar_button"  android:id="@+id/okcancelbar_ok"/>
3. <include  layout="@layout/okcancelbar_button" android:id="@+id/okcancelbar_cancel"/>
4. </merge>