android activity通过全局对象传递数据

MainActivity
[java]
package com.example.clipboard;

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;

public class MainActivity extends Activity implements OnClickListener{

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

Button button01 = (Button) findViewById(R.id.button1);
button01.setOnClickListener(this);
}

@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;
}

@Override
public void onClick(View v) {
Intent intent = null;
switch (v.getId()) {
case R.id.button1:
// TODO Auto-generated method stub
MyApp myApp = (MyApp) getApplicationContext();
myApp.city = "hangzhou";
myApp.data.id = 123456;
myApp.data.name = "hellogxp";
intent = new Intent(this,MainActivity01.class);
startActivity(intent);
break;

default:
break;
}

}

}
[/java]
MainActivity01
[java]
package com.example.clipboard;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.TextView;

public class MainActivity01 extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main_activity01);

TextView textView01 = (TextView) findViewById(R.id.textview01);
MyApp myApp = (MyApp) getApplicationContext();

textView01.setText("MyApp.city: " + myApp.city + "\nmyApp.data.id" + myApp.data.id + "\nmyApp.data.name" + myApp.data.name);
}

@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_activity01, menu);
return true;
}

}
[/java]
[xml]
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.clipboard"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk
android:minSdkVersion="11"
android:targetSdkVersion="18" />

</manifest>
[/xml]
完整项目工程文件
http://pan.baidu.com/s/1pJjmP9h