<?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>

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();    }}

<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>