补10.21

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">

<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""/>

<Button
android:id="@+id/btn1"
android:layout_width="180dp"
android:layout_height="74dp"
android:layout_centerInParent="true"
android:onClick="regist"
android:text="获取信息"
android:textSize="25sp"/>

</RelativeLayout>
package com.example.datarerurn;

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

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void regist(View v) {
// TODO Auto-generated method stub
Intent intent=new Intent(this,RegistActivity.class);
startActivityForResult(intent, 1);//当有多个请求的时候，标识的

}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
// TODO Auto-generated method stub
if(requestCode==1&&resultCode==1){
String name=intent.getStringExtra("name");
int age=intent.getIntExtra("age", 0);
String text="你的姓名是"+name+"你的年龄是"+age;

((TextView)(findViewById(R.id.textView1))).setText(text);
}
}

}
---------------------------------------------------------
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">

<EditText
android:id="@+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/textView1"
android:layout_alignBottom="@+id/textView1"
android:layout_alignParentRight="true"
android:layout_marginRight="19dp"
android:layout_marginBottom="-4dp"
android:ems="10" />

<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="60dp"
android:layout_marginTop="81dp"
android:text="输入姓名"
android:textSize="25sp" />

<EditText
android:id="@+id/editText2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/editText1"
android:layout_below="@+id/editText1"
android:layout_marginTop="33dp"
android:ems="10" />

<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/editText2"
android:layout_alignBottom="@+id/editText2"
android:layout_alignLeft="@+id/textView1"
android:text="输入年龄"
android:textSize="25sp"/>

<Button
android:id="@+id/button1"
android:layout_width="136dp"
android:layout_height="74dp"
android:layout_below="@+id/editText2"
android:layout_centerHorizontal="true"
android:layout_marginTop="91dp"
android:onClick="click"
android:text="返回"
android:textSize="25sp" />

</RelativeLayout>
package com.example.datarerurn;

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

public class RegistActivity extends Activity {
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.regist);
}

public void click(View v) {
Intent intent = new Intent();
String name = ((EditText) findViewById(R.id.editText1)).getText()
.toString();
int age = Integer.parseInt(((EditText) findViewById(R.id.editText2))
.getText().toString());
intent.putExtra("name", name);
intent.putExtra("age", age);
setResult(1, intent);
finish();

}

}