Fragment的问题，Error inflating class fragment

Abel_Joo 2013-08-10 10:46:41

就几行很简单的代码：

MainActivity.java

package com.plusjun.action;



import android.os.Bundle;

import android.app.Activity;

import android.app.Fragment;

import android.util.Log;

import android.view.LayoutInflater;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.view.ViewGroup;



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) {

		super.onCreateOptionsMenu(menu);

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

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

		return false;

	}



	@Override

	public boolean onOptionsItemSelected(MenuItem item) {

		return super.onOptionsItemSelected(item);

	}

}



class MyFragment extends Fragment{

	

	@Override

	public View onCreateView(LayoutInflater inflater, ViewGroup container,

			Bundle savedInstanceState) {

		return inflater.inflate(R.layout.a,container,false);

	}

}

activity_main.xml

<LinearLayout 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:orientation="vertical"

    tools:context=".MainActivity" >



    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

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



    <fragment

        android:id="@+id/fragment1"

        android:name="com.plusjun.action.MyFragment"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content" />



</LinearLayout>

a.xml

<?xml version="1.0" encoding="utf-8"?>

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

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >



    <Button

        android:id="@+id/bt1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="null" />



</LinearLayout>

报错日志如下：