Android——ViewGroup的一个用法范例(转载)

找了很久，终于找到了。

<?xml version="1.0" encoding="UTF-8" ?><merge  xmlns:android="http://schemas.android.com/apk/res/android"	xmlns:okCancelBar="http://schemas.android.com/apk/res/com.example.android.merge">	<ImageView		android:layout_width="fill_parent"		android:layout_height="fill_parent"		android:scaleType="center"		android:src="@drawable/golden_gate"	/>	<com.example.android.merge.OkCancelBar		android:layout_width="fill_parent"		android:layout_height="wrap_content"		android:layout_gravity="bottom"		android:paddingTop="8dip"		android:gravity="center_horizontal"		android:background="#AA000000"		okCancelBar:okLabel="Save"		okCancelBar:cancelLabel="Don't save" 	/></merge>

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

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public class OkCancelBar extends LinearLayout{	public OkCancelBar(Context context,AttributeSet attrs){		super(context, attrs);		setOrientation(HORIZONTAL);		setGravity(Gravity.CENTER);		setWeightSum(1.0f);		LayoutInflater.from(context).inflate(R.layout.okcancelbar,this,true);		TypedArray array= context.obtainStyledAttributes(attrs, R.styleable.OkCancelBar,0,0);		String text= array.getString(R.styleable.OkCancelBar_okLabel);		if(text==null) text="Ok";		((Button) findViewById(R.id.okcancelbar_ok)).setText(text);			text= array.getString(R.styleable.OkCancelBar_cancelLabel);		if(text==null) text="Cancel";       		((Button) findViewById(R.id.okcancelbar_cancel)).setText(text);		array.recycle();	}}

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

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直接从XML中得到一个VIEW加入到当前GROUP中

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okcancelbar.xml:

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