Android 界面跳转及数据交换

作者：卿笃军

原文地址：http://blog.csdn.net/qingdujun/article/details/40015757

本文演示：Android 界面跳转及数据交换，通过一个小Demo展示全部过程。

效果如下所示：

1）MainActivity.java

package doogle.xian.bundletest;

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

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button btn = (Button)findViewById(R.id.btn);
        btn.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View arg0) {
				EditText name = (EditText)findViewById(R.id.name);
				EditText age = (EditText)findViewById(R.id.age);
				CData send = new CData(name.getText().toString(),Integer.parseInt(age.getText().toString()));
				//创建一个Bundle对象
				Bundle data = new Bundle();
				data.putSerializable("mydata", send);
				//创建一个Intent对象
				Intent intent = new Intent(MainActivity.this,ResultActivity.class);
				intent.putExtras(data);
				//启动Intent对应的Activity
				startActivity(intent);
			}
		});
    }

    @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 boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}

2）activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="doogle.xian.bundletest.MainActivity" >

    <TextView
        android:id="@+id/tv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="传给Activity2：" />
    <EditText
        android:id="@+id/name"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/tv"
        android:hint="name" />
    <EditText
        android:id="@+id/age"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/name"
        android:hint="age" />
    <Button
        android:id="@+id/btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/age"
        android:text="开启activity2"/>

</RelativeLayout>

3）ResultActivity.java

package doogle.xian.bundletest;

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

public class ResultActivity extends Activity {
	@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.result);
        TextView tv1 = (TextView)findViewById(R.id.tv1);
        TextView tv2 = (TextView)findViewById(R.id.tv2);
        //获得启动该Result的Intent
        Intent intent = getIntent();
        //直接通过Intent取出它所携带的Bundle数据包中的数据
        CData accept = (CData)intent.getSerializableExtra("mydata");
        tv1.setText("姓名"+accept.getName());
        tv2.setText("年龄"+accept.getAge());
    }
}

4）result.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" >

    <TextView
        android:id="@+id/tv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="接收到的数据：" />
    <TextView
        android:id="@+id/tv1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="" />
    <TextView
        android:id="@+id/tv2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="" />

</LinearLayout>

5）CData.java

package doogle.xian.bundletest;

import java.io.Serializable;

public class CData implements Serializable{
	private static final long serialVersionUID = 1L;
	String name;
	int age;
	public CData(String n, int a) {
		name = n;
		age = a;
	}
	public String getName()
	{
		return name;
	}
	public int getAge()
	{
		return age;
	}
}

6）AndroidMainfest.xml

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

    <uses-sdk
        android:minSdkVersion="15"
        android:targetSdkVersion="15" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".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>
        <!-- 配置Activity -->
        <activity
            android:name=".ResultActivity"
            android:label="Activity2" >
        </activity>
    </application>

</manifest>

原文地址：http://blog.csdn.net/qingdujun/article/details/40015757