在布局xml使用自定义ViewGroup,使用setContentView(R.layout.activity_main)就出错

craboy1 2014-11-12 10:18:54



<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context=".MainActivity" >



    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="@string/hello_world" />

    <com.example.viewgroup2.TestViewGroup 

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:id="@+id/myTestVG"

        >

      

    </com.example.viewgroup2.TestViewGroup>



</RelativeLayout>

package com.example.viewgroup2;



import android.content.Context;

import android.view.ViewGroup;



public class TestViewGroup extends ViewGroup {



	public TestViewGroup(Context context) {

		super(context);

		// TODO Auto-generated constructor stub

	}



	@Override

	protected void onLayout(boolean arg0, int arg1, int arg2, int arg3, int arg4) {

		// TODO Auto-generated method stub



	}



	/**

	 * @param args

	 */

	public static void main(String[] args) {

		// TODO Auto-generated method stub



	}



}

package com.example.viewgroup2;



import android.os.Bundle;

import android.app.Activity;

import android.view.Menu;



public class MainActivity extends Activity {



	@Override

	protected void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		setContentView(R.layout.activity_main);

	}



	@Override

	public boolean onCreateOptionsMenu(Menu menu) {

		// Inflate the menu; this adds items to the action bar if it is present.

		getMenuInflater().inflate(R.menu.main, menu);

		return true;

	}



}