多个Activity之间的通信与数据传递的Bundle对象的使用
<AbsoluteLayout xmlns:android="http://schemas.android.com/apk/res/android"
??? android:orientation="vertical"
??? android:layout_width="fill_parent"
??? android:layout_height="fill_parent"
??? >
<TextView?
??? android:layout_width="fill_parent"
??? android:layout_height="wrap_content"
??? android:text="Person information"
??? />
<TextView
??? android:layout_width="fill_parent"
??? android:layout_height="wrap_content"
??? android:text="Name:"
??? android:layout_y="30px"
/>
<TextView
??? android:layout_width="fill_parent"
??? android:layout_height="wrap_content"
??? android:text="Gender:"
??? android:layout_y="80px"
/>
<EditText
??? android:id="@+id/ed1"
??? android:layout_width="200px"
??? android:layout_height="wrap_content"
??? android:layout_x="50px"
??? android:layout_y="20px"
/>
<RadioButton
??? android:id="@+id/rb1"
??? android:layout_width="wrap_content"
??? android:layout_height="wrap_content"
??? android:text="man"
??? android:layout_x="60px"
??? android:layout_y="65px"
??? android:checked="true"//默认它是被选中的
/>
<RadioButton
??? android:id="@+id/rb2"
??? android:layout_width="wrap_content"
??? android:layout_height="wrap_content"
??? android:text="woman"
??? android:layout_x="160px"
??? android:layout_y="65px"
/>
<Button
??? android:id="@+id/bt1"
??? android:layout_width="wrap_content"
??? android:layout_height="wrap_content"
??? android:text="confirm"
??? android:layout_y="120px"
/>
</AbsoluteLayout>

在main.xml同一目录下建另外一个页面布局mylayou.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
??? android:orientation="vertical"
??? android:layout_width="fill_parent"
??? android:layout_height="fill_parent"
??? >
<TextView?
??? android:id="@+id/mytv"
??? android:layout_width="fill_parent"
??? android:layout_height="wrap_content"
??? android:text="@string/hello"
??? />
</LinearLayout>

下面是程序的核心代码BundleDemo.java和BundleDemo1.java

BundleDemo.java:

package com.android.test;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RadioButton;

public class BundleDemo extends Activity {
?
??? public void onCreate(Bundle savedInstanceState) {
??????? super.onCreate(savedInstanceState);
??????? setContentView(R.layout.main);????
??????? //以findViewById()取得Button对象,并添加响应?????
??????? Button bt1 = (Button)findViewById(R.id.bt1);
??????? bt1.setOnClickListener(new Button.OnClickListener(){
??????? ??? public void onClick(View v){
??????? ??? ??? //取得name
??????? ??? ??? EditText et = (EditText)findViewById(R.id.ed1);
??????? ??? ??? String name = et.getText().toString();
??????? ??? ??? //取得Gender
??????? ??? ??? String sex="";
??????? ??? ??? RadioButton rb1 = (RadioButton)findViewById(R.id.rb1);
??????? ??? ??? if(rb1.isChecked())
??????? ??? ??? {
??????? ??? ??? ??? sex="man";
??????? ??? ??? }else{
??????? ??? ??? ??? sex="woman";
??????? ??? ??? }
??????? ??? ??? //new一个Intent对象,用法上节已经讲过了
??????? ??? ??? Intent intent = new Intent();
??????? ??? ??? intent.setClass(BundleDemo.this, BundleDemo1.class);
??????? ??? ??? //new一个Bundle对象,并将要传递的数据导入,这里是重点Map<String,String>结构哦???
??????? ??? ??? Bundle bundle = new Bundle();
??????? ??? ??? bundle.putString("name",name);
??????? ??? ??? bundle.putString("sex", sex);
??????? ??? ??? //将Bundle对象assign给Intent
??????? ??? ??? intent.putExtras(bundle);
??????? ??? ??? //调用Activity BundleDemo1
??????? ??? ??? startActivity(intent);
??????? ??? }
??????? });
??? }
}

在BundleDemo.java同一目录建立BundleDemo1.java:

package com.android.test;

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


public class BundleDemo1 extends Activity {
?
??? public void onCreate(Bundle savedInstanceState) {
??????? super.onCreate(savedInstanceState);
??????? setContentView(R.layout.mylayout);
????? //取得Intent中的Bundle对象
??????? Bundle bundle = this.getIntent().getExtras();??????
??????? //取得Bundle对象中的数据
??????? String name = bundle.getString("name");
??????? String sex = bundle.getString("sex");??????
??????? //设置输出文字
??????? TextView mytv = (TextView)findViewById(R.id.mytv);
??????? mytv.setText("you name is:" + name + "\n you gender is:"+sex);
??? }
}

最后我们还是要在AndroidManifest.xml中加入BundleDemo1这个Activity,一定要加,不然后果自负呵呵~

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
????? package="com.android.test"
????? android:versionCode="1"
????? android:versionName="1.0">
??? <application android:icon="@drawable/icon" android:label="@string/app_name">
??????? <activity android:name=".BundleDemo"
????????????????? 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="BundleDemo1"></activity>
??? </application>
??? <uses-sdk android:minSdkVersion="3" />

</manifest>

执行之,将达到上述效果~今天到此结束,谢谢大家!

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