Android中两个Activity之间简单的传递Extra

package com.wizzhangquan.helloworld;

import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity extends Activity {

    private Button myButton = null;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        TextView myTextView = (TextView)findViewById(R.id.myTextView);
        myButton=(Button)findViewById(R.id.myButton);
        myTextView.setText("My first TextView");
        myButton.setText("My first Button");
        myButton.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.main, menu);
        return true;
    }

    class MyButtonListener implements OnClickListener {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            Intent intent = new Intent();
            intent.putExtra("testIntent", "123456");
            intent.setClass(MainActivity.this, OtherActivity.class);
            MainActivity.this.startActivity(intent);
        }
        
    }
}

package com.wizzhangquan.helloworld;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.TextView;

public class OtherActivity extends Activity {

    private TextView otherTextView = null;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.other_activity);
        Intent intent = getIntent();//获取intent
        String Value = intent.getStringExtra("testIntent");
        otherTextView = (TextView)findViewById(R.id.otherTextView);
        otherTextView.setText(Value);
    }

}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.wizzhangquan.helloworld"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="14" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.wizzhangquan.helloworld.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=".OtherActivity"
            android:label="@string/other_activity">
        </activity>
    </application>

</manifest>