main端：

/*** 实现：主页面点击按钮1，跳转到页面二输入内容，点击页面二按钮返回主页面并显示输入信息；*     主页面点击按钮2，跳转到页面三输入内容，点击页面三按钮返回主页面并显示输入信息.* 主要步骤：* 1) startActivityForResult(intent, 0);* 2) 回传数据时，调用setResult(0, data)方法，然后执行finish()* 3) onActivityResult(int, int, Intent data)*/
public class MainActivity extends Activity
{private static final int BTN_ONE = 1;//将常量封装定义private static final int BTN_TWO = 2;@Override//重写onActivityResultprotected void onActivityResult(int requestCode, int resultCode, Intent data){super.onActivityResult(requestCode, resultCode, data);//有参数的super必须重写TextView textView = (TextView) findViewById(R.id.textView1_main);if(requestCode == BTN_ONE)//根据请求码判断接收内容{String str = data.getStringExtra("one");textView.setText(str);}else if(requestCode == BTN_TWO){String str = data.getStringExtra("two");textView.setText(str);}}@Overrideprotected void onCreate(Bundle savedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);//监听button1，跳转到NextActivity，等待resultButton button1=(Button) findViewById(R.id.button1_main);button1.setOnClickListener(new OnClickListener(){@Overridepublic void onClick(View v){Intent intent = new Intent(MainActivity.this,NextActivity.class);startActivityForResult(intent, BTN_ONE);}});//监听button2，跳转到ThirdActivity，等待resultButton button2 =(Button) findViewById(R.id.button2_main);button2.setOnClickListener(new OnClickListener(){@Overridepublic void onClick(View v){Intent intent = new Intent(MainActivity.this,ThirdActivity.class);startActivityForResult(intent, BTN_TWO);}});}@Overridepublic boolean onCreateOptionsMenu(Menu menu){getMenuInflater().inflate(R.menu.main, menu);return true;}
}

next端：

public class NextActivity extends Activity
{@Overrideprotected void onCreate(Bundle savedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.activity_next);Button button =(Button) findViewById(R.id.button1_next);button.setOnClickListener(new OnClickListener(){@Overridepublic void onClick(View v){//得到用户数据EditText editText=(EditText) findViewById(R.id.editText1_next);String strone = editText.getText().toString();//回传数据Intent data = new Intent();data.putExtra("one", strone);setResult(1, data );//关闭当前窗口finish();}});}@Overridepublic boolean onCreateOptionsMenu(Menu menu){getMenuInflater().inflate(R.menu.next, menu);return true;}
}

third端：

public class ThirdActivity extends Activity
{@Overrideprotected void onCreate(Bundle savedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.activity_third);Button button = (Button) findViewById(R.id.button1_third);button.setOnClickListener(new OnClickListener(){@Overridepublic void onClick(View v){EditText editText = (EditText) findViewById(R.id.editText1_third);String strtwo = editText.getText().toString();Intent data = new Intent();data.putExtra("two", strtwo);setResult(2,data );finish();}});}@Overridepublic boolean onCreateOptionsMenu(Menu menu){getMenuInflater().inflate(R.menu.third, menu);return true;}
}