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">

    <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>

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>