两个Activity之间的跳转

脸肿了 2013-04-21 12:59:30

代码如下：
MainActivity



package com.example.android0420;



import android.os.Bundle;

import android.app.Activity;



import android.content.Intent;



import android.view.Menu;

import android.view.View;

import android.widget.Button;

import android.widget.TextView;

import android.view.View.OnClickListener;



public class MainActivity extends Activity {



	@Override

	protected void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		setContentView(R.layout.activity_main);

		

		TextView tvuser=(TextView)findViewById(R.id.TextViewUser);

		TextView tvpass=(TextView)findViewById(R.id.TextViewPass);

		

		Button blogin=(Button)findViewById(R.id.ButtonLogin);

		Button bexit=(Button)findViewById(R.id.ButtonExit);

		

		tvuser.setText("用      户:");

		tvpass.setText("密      码:");

		blogin.setText("登  录");

		bexit.setText("退  出");

		

		blogin.setOnClickListener(new MyButtonListener());

	}



	@Override

	public boolean onCreateOptionsMenu(Menu menu) {

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

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

		return true;

	}

	

	

	 class MyButtonListener implements OnClickListener{



		



			@Override

			public void onClick(View v) {

				// TODO Auto-generated method stub

				Intent intent=new Intent();

				intent.setClass(MainActivity.this, MainMeunActivity.class);

				MainActivity.this.startActivity(intent);

			}

	 }

	



}

AndroidMainfest.xml



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

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

    package="com.example.android0420"

    android:versionCode="1"

    android:versionName="1.0" >



    <uses-sdk

        android:minSdkVersion="8"

        android:targetSdkVersion="8" />



    <application

        android:allowBackup="true"

        android:icon="@drawable/ic_launcher"

        android:label="@string/app_name"

        android:theme="@style/AppTheme" >

        <activity

            android:name="com.example.android0420.MainActivity"

            android:label="@string/app_name" >

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />



                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

        <activity android:name="com.example.android0420.MainMeunActicity" android:label="@string/mianmenuactivitytitle"/>

    </application>



</manifest>

string.xml



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

<resources>



    <string name="app_name">Android_2.2_0420</string>

    <string name="hello_world">Hello world!</string>

    <string name="menu_settings">Settings</string>

    <string name="mianmenuactivity">您好,欢迎您!</string>

    <string name="mianmenuactivitytitle">主界面</string>

</resources>

点击登录按钮的时候有错误出现：
提示：“”

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