package com.wyl.intentmultiactivitytest;

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.EditText;

public class FirstActivity extends Activity {

	//

	Button btn01;

	Button btn02;

	EditText et;

	@Override

	protected void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		setContentView(R.layout.firstctivity);// 绑定页面

		btn01 = (Button) findViewById(R.id.button1);

		btn02 = (Button) findViewById(R.id.button2);

		et = (EditText)findViewById(R.id.editText1);

		btn01.setOnClickListener(new OnClickListener() {

			@Override

			public void onClick(View v) {

				// TODO Auto-generated method stub

				// 1.上下文对象，Context

				// 2.目标文件

				Intent intent = new Intent(FirstActivity.this,

						SecondActivity.class);

				System.out.println("======kaishi :====");

				startActivity(intent);// 实现跳转到第二个页面

			}

		});

		btn02.setOnClickListener(new OnClickListener() {

			@Override

			public void onClick(View v) {

				// TODO Auto-generated method stub

				// 1.上下文对象，Context

				// 2.目标文件

				Intent intent = new Intent(FirstActivity.this,

						SecondActivity.class);

				System.out.println("======第一个页面的第二种跳转kaishi :====");

				startActivityForResult(intent, 1);;// 实现跳转到第二个页面

			}

		});

	}

	@Override

	protected void onActivityResult(int requestCode, int resultCode, Intent data) {

		// TODO Auto-generated method stub

		super.onActivityResult(requestCode, resultCode, data);

		if(requestCode==1&&resultCode==2){

			String plnr1 = data.getStringExtra("plnr");

			String plnr2 = data.getExtras().getString("plnr");

			System.out.println("==========:"+plnr1+",plnr2:"+plnr2);

			et.setText("data.getStringExtra('plnr1')"+plnr1+",plnr2 = data.getExtras().getString('plnr')的方式"+plnr2);

		}

	}

}

package com.wyl.intentmultiactivitytest;

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.EditText;

import android.widget.Toast;

public class SecondActivity extends Activity {

	Button btn01;

	Button btn02;

	EditText et;

	@Override

	protected void onCreate(Bundle savedInstanceState) {

		// TODO Auto-generated method stub

		super.onCreate(savedInstanceState);

		setContentView(R.layout.second_activity);// 绑定页面

		System.out.println("=====wo shi the second yemian =====");

		btn01 = (Button) findViewById(R.id.button21);

		btn02 = (Button) findViewById(R.id.button22);

		et = (EditText)findViewById(R.id.editText01);

		btn01.setOnClickListener(new OnClickListener() {

			@Override

			public void onClick(View v) {

				// TODO Auto-generated method stub

				Intent intent = new Intent(SecondActivity.this, FirstActivity.class);

				System.out.println("==cong dier tiaodao diyiye==");

				startActivity(intent);

			}

		});

		btn02.setOnClickListener(new OnClickListener() {

			@Override

			public void onClick(View v) {

				// TODO Auto-generated method stub

				Intent intent = new Intent();

				String content = et.getText().toString();//获取评论的内容

				intent.putExtra("plnr", content);

				//2是状态码，随便自己设置，用来判断是哪个页面的返回值，自己不弄混了就行

				setResult(2, intent);	//这是最关键的一步，

				Toast.makeText(SecondActivity.this, intent.getExtras().getString("plnr"),1000);

				finish();//关闭该页面，就会自动返回到了第一页了。

			}

		});

	}

}

<?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" >

    <Button

        android:id="@+id/button1"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:text="new Intent(context,目标activity.class),startActivity(intent)方式跳转" />

    <Button

        android:id="@+id/button2"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:text="第二种方式跳转" />

    <EditText

        android:id="@+id/editText1"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:ems="10"

        android:hint="我只是个提示框框而已">

        <requestFocus />

    </EditText>

</LinearLayout>

<?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" >

    <EditText

        android:id="@+id/editText01"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:hint="录入要返回到第一页的内容" />

    <Button

        android:id="@+id/button21"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:text="我是第二个activity页面" />

	<Button

        android:id="@+id/button22"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:text="startActivityForResult方式返回，并且回传数据" />

</LinearLayout>