从新的activity取得返回值

<!-- 读取联系人信息权限 --><uses-permission android:name="android.permission.READ_CONTACTS"/>package com.example.send;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 MainActivity extends Activity implements OnClickListener {private EditText et_contact;private EditText et_contact2;private Button bu_contact_number;private Button bu_contact_number2;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);et_contact = (EditText) findViewById(R.id.et_contact);et_contact2 = (EditText) findViewById(R.id.et_contact2);bu_contact_number = (Button) findViewById(R.id.bu_contact_number);bu_contact_number.setOnClickListener(this);bu_contact_number = (Button) findViewById(R.id.bu_contact_number2);bu_contact_number.setOnClickListener(this);}@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.bu_contact_number://设置启动的activity,请求码为1Intent intent = new Intent(this, SelectContactActivity.class);startActivityForResult(intent, 1);break;case R.id.bu_contact_number2://设置启动的activity,请求码为2Intent intent2 = new Intent(this, SelectContactActivity.class);startActivityForResult(intent2, 2);break;}}//这个方法为当前activity开启另一个新的activity之后，在新的activity关闭的时候调用的方法@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {//取得返回的数据if (data != null) {String number = data.getStringExtra("number");//如果点击事件请求码为1，把数据设置到第一个编辑框内if (requestCode == 1) {System.out.println("bug-----8");et_contact.setText(number);//如果点击事件请求码为2，把数据设置到第二个编辑框内} else if (requestCode == 2) {System.out.println("bug-----7");et_contact2.setText(number);}}super.onActivityResult(requestCode, resultCode, data);}}package com.example.send;import java.util.List;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.view.ViewGroup;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.BaseAdapter;import android.widget.ListView;import android.widget.TextView;import com.example.send.domain.ContactInfo;public class SelectContactActivity extends Activity {private ListView lv_select_contact;private List<ContactInfo> contactInfos;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.lv_select_contact);lv_select_contact = (ListView) findViewById(R.id.lv_select_contact);// 内容提供者查询出来返回联系人的集合,也就是所有联系人的数据contactInfos = ContactService.getContactInfos(this);lv_select_contact.setAdapter(new ContactAdapter());//设置在listview里面点击一个条目的点击事件lv_select_contact.setOnItemClickListener(new OnItemClickListener(){@Overridepublic void onItemClick(AdapterView<?> parent, View view,int position, long id) {ContactInfo info = contactInfos.get(position);String number = info.getNumber();Intent data = new Intent();data.putExtra("number", number);setResult(0, data);//结束当前界面，把数据带回给原来的界面finish();}});}private class ContactAdapter extends BaseAdapter {@Overridepublic int getCount() {//返回集合的大小return contactInfos.size();}@Overridepublic Object getItem(int position) {// TODO Auto-generated method stubreturn null;}@Overridepublic long getItemId(int position) {// TODO Auto-generated method stubreturn 0;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {//设置集合的位置ContactInfo info = contactInfos.get(position);View view = View.inflate(SelectContactActivity.this, R.layout.item_contact, null);TextView tv_name = (TextView) view.findViewById(R.id.tv_name);tv_name.setText(info.getName());TextView tv_number = (TextView) view.findViewById(R.id.tv_number);tv_number.setText(info.getNumber());return view;}}}package com.example.send;import java.util.ArrayList;import java.util.List;import android.content.ContentResolver;import android.content.Context;import android.database.Cursor;import android.net.Uri;import com.example.send.domain.ContactInfo;public class ContactService {public static List<ContactInfo> getContactInfos(Context context) {List<ContactInfo> contactInfos = new ArrayList<ContactInfo>();ContentResolver resolver = context.getContentResolver();//系统内容提供者路径content://com.android.contacts/raw_contacts为存放联系人id路径//系统内容提供者路径content://com.android.contacts/data为存放联系人数据的路径Uri uri = Uri.parse("content://com.android.contacts/raw_contacts");Uri dataUri = Uri.parse("content://com.android.contacts/data");Cursor cursor = resolver.query(uri, null, null, null, null);while (cursor.moveToNext()){//查询的这个表存放联系人id的String id = cursor.getString(cursor.getColumnIndex("contact_id"));if (id != null){//查询的这个表用来存入联系人数据的，以id为标志，一个id,代表一个联系人，一个联系人存放两个数据"data1","mimetype"Cursor dataCursor = resolver.query(dataUri, new String[]{"data1","mimetype"}, "raw_contact_id=?", new String[]{id}, null);//查询的一行的数据有两列，一列为data用来存放数据的(0)，另一列为mimetype,用来存放数据为哪一类型的(1)ContactInfo conactInfo = new ContactInfo();while (dataCursor.moveToNext()){//查询表的数据的一列String data = dataCursor.getString(0);//查询表的数据类型的一列String mimetype = dataCursor.getString(1);//如果查询的这一行数据类型为名字，就是把这行的数据加入到一人联系人对象的name中,若为phone)v2,就把电话号码加入到联系人对象的number中if ("vnd.android.cursor.item/name".equals(mimetype)){conactInfo.setName(data);} else if ("vnd.android.cursor.item/phone_v2".equals(mimetype)){conactInfo.setNumber(data);}}//把每次查询出来的一个联系人加入到集合中contactInfos.add(conactInfo);dataCursor.close();}}cursor.close();return contactInfos;}}package com.example.send.domain;public class ContactInfo {private String name;private String number;public String getName() {return name;}public void setName(String name) {this.name = name;}public String getNumber() {return number;}public void setNumber(String number) {this.number = number;}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    tools:context=".MainActivity" >    <RelativeLayout        android:layout_width="match_parent"        android:layout_height="wrap_content" >        <EditText            android:id="@+id/et_number"            android:layout_width="match_parent"            android:layout_height="50dip"            android:hint="请输入联系人电话号码" />        <Button            android:id="@+id/selectContact"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_alignParentRight="true"            android:text="联系人" />    </RelativeLayout>    <RelativeLayout        android:layout_width="match_parent"        android:layout_height="wrap_content" >        <EditText            android:id="@+id/et_number2"            android:layout_width="match_parent"            android:layout_height="50dip"            android:hint="请输入联系人电话号码" />        <Button            android:id="@+id/selectContact2"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_alignParentRight="true"            android:text="第二个联系人" />    </RelativeLayout>    <EditText        android:id="@+id/et_content"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_marginTop="15dip"        android:hint="请输短信内容"        android:inputType="textMultiLine"        android:minLines="5" />    <Button        android:id="@+id/sendsms"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="发送短信.." /></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" >    <ListView        android:id="@+id/lv_selectcontcat"        android:layout_width="match_parent"        android:layout_height="match_parent" >    </ListView></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" >    <TextView        android:id="@+id/tv_contact_name"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:gravity="center_horizontal"        android:text="姓名"        android:textColor="#000000"        android:textSize="18sp" />    <TextView        android:id="@+id/tv_contact_number"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:gravity="center_horizontal"        android:text="电话"        android:textColor="#990000"        android:textSize="16sp" /></LinearLayout>全部代码：package com.example.send;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 MainActivity extends Activity implements OnClickListener {private EditText et_contact;private EditText et_contact2;private Button bu_contact_number;private Button bu_contact_number2;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);et_contact = (EditText) findViewById(R.id.et_contact);et_contact2 = (EditText) findViewById(R.id.et_contact2);bu_contact_number = (Button) findViewById(R.id.bu_contact_number);bu_contact_number.setOnClickListener(this);bu_contact_number = (Button) findViewById(R.id.bu_contact_number2);bu_contact_number.setOnClickListener(this);}@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.bu_contact_number:Intent intent = new Intent(this, SelectContactActivity.class);startActivityForResult(intent, 1);break;case R.id.bu_contact_number2:Intent intent2 = new Intent(this, SelectContactActivity.class);startActivityForResult(intent2, 2);break;}}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {if (data != null) {String number = data.getStringExtra("number");if (requestCode == 1) {System.out.println("bug-----8");et_contact.setText(number);} else if (requestCode == 2) {System.out.println("bug-----7");et_contact2.setText(number);}}super.onActivityResult(requestCode, resultCode, data);}}package com.example.send;import java.util.List;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.view.ViewGroup;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.BaseAdapter;import android.widget.ListView;import android.widget.TextView;import com.example.send.domain.ContactInfo;public class SelectContactActivity extends Activity {private ListView lv_select_contact;private List<ContactInfo> contactInfos;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.lv_select_contact);lv_select_contact = (ListView) findViewById(R.id.lv_select_contact);contactInfos = ContactService.getContactInfos(this);lv_select_contact.setAdapter(new ContactAdapter());lv_select_contact.setOnItemClickListener(new OnItemClickListener(){@Overridepublic void onItemClick(AdapterView<?> parent, View view,int position, long id) {ContactInfo info = contactInfos.get(position);String number = info.getNumber();Intent data = new Intent();data.putExtra("number", number);setResult(0, data);finish();}});}private class ContactAdapter extends BaseAdapter {@Overridepublic int getCount() {return contactInfos.size();}@Overridepublic Object getItem(int position) {// TODO Auto-generated method stubreturn null;}@Overridepublic long getItemId(int position) {// TODO Auto-generated method stubreturn 0;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {ContactInfo info = contactInfos.get(position);View view = View.inflate(SelectContactActivity.this, R.layout.item_contact, null);TextView tv_name = (TextView) view.findViewById(R.id.tv_name);tv_name.setText(info.getName());TextView tv_number = (TextView) view.findViewById(R.id.tv_number);tv_number.setText(info.getNumber());return view;}}}package com.example.send;import java.util.ArrayList;import java.util.List;import android.content.ContentResolver;import android.content.Context;import android.database.Cursor;import android.net.Uri;import com.example.send.domain.ContactInfo;public class ContactService {public static List<ContactInfo> getContactInfos(Context context) {List<ContactInfo> contactInfos = new ArrayList<ContactInfo>();ContentResolver resolver = context.getContentResolver();Uri uri = Uri.parse("content://com.android.contacts/raw_contacts");Uri dataUri = Uri.parse("content://com.android.contacts/data");Cursor cursor = resolver.query(uri, null, null, null, null);while (cursor.moveToNext()){String id = cursor.getString(cursor.getColumnIndex("contact_id"));if (id != null){Cursor dataCursor = resolver.query(dataUri, new String[]{"data1","mimetype"}, "raw_contact_id=?", new String[]{id}, null);ContactInfo conactInfo = new ContactInfo();while (dataCursor.moveToNext()){String data = dataCursor.getString(0);String mimetype = dataCursor.getString(1);if ("vnd.android.cursor.item/name".equals(mimetype)){conactInfo.setName(data);} else if ("vnd.android.cursor.item/phone_v2".equals(mimetype)){conactInfo.setNumber(data);}}contactInfos.add(conactInfo);dataCursor.close();}}cursor.close();return contactInfos;}}package com.example.send.domain;public class ContactInfo {private String name;private String number;public String getName() {return name;}public void setName(String name) {this.name = name;}public String getNumber() {return number;}public void setNumber(String number) {this.number = number;}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    tools:context=".MainActivity" >    <RelativeLayout        android:layout_width="match_parent"        android:layout_height="wrap_content" >        <EditText            android:id="@+id/et_number"            android:layout_width="match_parent"            android:layout_height="50dip"            android:hint="请输入联系人电话号码" />        <Button            android:id="@+id/selectContact"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_alignParentRight="true"            android:text="联系人" />    </RelativeLayout>    <RelativeLayout        android:layout_width="match_parent"        android:layout_height="wrap_content" >        <EditText            android:id="@+id/et_number2"            android:layout_width="match_parent"            android:layout_height="50dip"            android:hint="请输入联系人电话号码" />        <Button            android:id="@+id/selectContact2"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_alignParentRight="true"            android:text="第二个联系人" />    </RelativeLayout>    <EditText        android:id="@+id/et_content"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_marginTop="15dip"        android:hint="请输短信内容"        android:inputType="textMultiLine"        android:minLines="5" />    <Button        android:id="@+id/sendsms"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="发送短信.." /></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" >    <ListView        android:id="@+id/lv_selectcontcat"        android:layout_width="match_parent"        android:layout_height="match_parent" >    </ListView></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" >    <TextView        android:id="@+id/tv_contact_name"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:gravity="center_horizontal"        android:text="姓名"        android:textColor="#000000"        android:textSize="18sp" />    <TextView        android:id="@+id/tv_contact_number"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:gravity="center_horizontal"        android:text="电话"        android:textColor="#990000"        android:textSize="16sp" /></LinearLayout>