Android——ViewGroup的一个用法实例

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"><ImageViewandroid:layout_width="fill_parent"android:layout_height="fill_parent"android:scaleType="center"android:src="@drawable/golden_gate"/><com.example.android.merge.OkCancelBarandroid: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>

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

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();}}

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:

<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>

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