本文主要介绍android中怎样获取系统的联系人数据
首先打开模拟器
点击联系人图标按钮
说明系统联系人数据库是空的,打开File explorer,找到data/data下面的文件夹:
将contacts2.db文件导出,添加到sqlite中的时候报错:
点击“ok”忽略之
表结构相当的复杂,首先搞清楚其中的三张表
* data表 保存联系人的数据
* raw_contacts表 保存联系人的id contact_id
* mimetypes表 保存联系人数据的类型
接下来通过模拟器添加联系人
通过sqlite刷新contacts2.db,忽略提示错误
获取联系人步骤
1. 查询raw_contacts表,把联系人的id取出来
2. 根据联系人的id,查询data表,把这个id的数据取出来
3. 根据mimetype区分数据的类型
接下来通过代码实现
package com.wuyudong.getcontacts;
import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.content.ContentResolver;
import android.database.Cursor;
import android.view.Menu;
import android.view.View;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
/**
* 获取全部的联系人
*
* @param view
*/
public void click(View view) {
ContentResolver resolver = getContentResolver();
// 1.查询raw_contacts表,把联系人的id取出来
Uri uri = Uri.parse("content://com.android.contacts/raw_contacts");
Uri datauri = Uri.parse("content://com.android.contacts/data");
Cursor cursor = resolver.query(uri, new String[] { "contact_id" },
null, null, null);
while (cursor.moveToNext()) {
String id = cursor.getString(0);
System.out.println("联系人id: " + id);
// 2.根据联系人的id,查询data表,把这个id的数据取出来
// 系统api查询data表的时候不是真正的查询的data表,而是查询data表的视图
Cursor dataCursor = resolver.query(datauri, new String[] { "data1", "mimetype" },
"raw_contact_id=?", new String[] { id }, null);
while (dataCursor.moveToNext()) {
String data1 = dataCursor.getString(0);
System.out.println("data1=" + data1);
String mimetype = dataCursor.getString(1);
System.out.println("mimetype=" + mimetype);
}
dataCursor.close();
}
cursor.close();
}
}
添加权限:android.permission.READ_CONTACTS
运行后打印相关的结果:
06-18 10:59:41.556: I/System.out(2127): 联系人id: 1
06-18 10:59:41.636: I/System.out(2127): data1=110
06-18 10:59:41.636: I/System.out(2127): mimetype=vnd.android.cursor.item/phone_v2
06-18 10:59:41.646: I/System.out(2127): data1=wuyudong@wuyudong.com
06-18 10:59:41.646: I/System.out(2127): mimetype=vnd.android.cursor.item/email_v2
06-18 10:59:41.646: I/System.out(2127): data1=Wuyudong
06-18 10:59:41.646: I/System.out(2127): mimetype=vnd.android.cursor.item/name
通过上面的打印信息,可以修改程序
package com.wuyudong.getcontacts;
import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.content.ContentResolver;
import android.database.Cursor;
import android.view.Menu;
import android.view.View;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
/**
* 获取全部的联系人
*
* @param view
*/
public void click(View view) {
ContentResolver resolver = getContentResolver();
// 1.查询raw_contacts表,把联系人的id取出来
Uri uri = Uri.parse("content://com.android.contacts/raw_contacts");
Uri datauri = Uri.parse("content://com.android.contacts/data");
Cursor cursor = resolver.query(uri, new String[] { "contact_id" },
null, null, null);
while (cursor.moveToNext()) {
String id = cursor.getString(0);
System.out.println("联系人id: " + id);
// 2.根据联系人的id,查询data表,把这个id的数据取出来
// 系统api查询data表的时候不是真正的查询的data表,而是查询data表的视图
Cursor dataCursor = resolver
.query(datauri, new String[] { "data1", "mimetype" },
"raw_contact_id=?", new String[] { id }, null);
while (dataCursor.moveToNext()) {
String data1 = dataCursor.getString(0);
String mimetype = dataCursor.getString(1);
if ("vnd.android.cursor.item/name".equals(mimetype)) {
System.out.println("姓名=" + data1);
} else if ("vnd.android.cursor.item/email_v2".equals(mimetype)) {
System.out.println("邮箱=" + data1);
} else if ("vnd.android.cursor.item/phone_v2".equals(data1)) {
System.out.println("电话=" + data1);
} else if ("vnd.android.cursor.item/im".equals(mimetype)) {
System.out.println("QQ=" + data1);
}
}
dataCursor.close();
}
cursor.close();
}
}
运行后打印相关的结果:
06-18 11:17:57.312: I/System.out(2380): 联系人id: 1
06-18 11:17:57.452: I/System.out(2380): 邮箱=wuyudong@wuyudong.com
06-18 11:17:57.452: I/System.out(2380): 姓名=Wuyudong
06-18 11:17:57.452: I/System.out(2380): QQ=11111111
06-18 11:17:57.482: I/System.out(2380): 联系人id: 2
06-18 11:17:57.572: I/System.out(2380): QQ=32423423422
06-18 11:17:57.572: I/System.out(2380): 邮箱=wu@wuyudong.com
06-18 11:17:57.572: I/System.out(2380): 姓名=Zhangsan
最后将这些操作封装成api,便于以后使用
新建ContactInfoParser.java文件
package com.wuyudong.getcontacts.service;
import java.util.ArrayList;
import java.util.List;
import com.wuyudong.getcontacts.domain.ContactInfo;
import android.content.ContentResolver;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
public class ContactInfoParser {
/**
* 获取系统全部联系人的api方法
*
* @param context
* @return
*/
public static List<ContactInfo> findAll(Context context) {
ContentResolver resolver = context.getContentResolver();
// 1.查询raw_contacts表,把联系人的id取出来
Uri uri = Uri.parse("content://com.android.contacts/raw_contacts");
Uri datauri = Uri.parse("content://com.android.contacts/data");
List<ContactInfo> infos = new ArrayList<ContactInfo>();
Cursor cursor = resolver.query(uri, new String[] { "contact_id" },
null, null, null);
while (cursor.moveToNext()) {
String id = cursor.getString(0);
if (id != null) {
System.out.println("联系人id: " + id);
ContactInfo info = new ContactInfo();
info.setId(id);
// 2.根据联系人的id,查询data表,把这个id的数据取出来
// 系统api查询data表的时候不是真正的查询的data表,而是查询data表的视图
Cursor dataCursor = resolver.query(datauri, new String[] {
"data1", "mimetype" }, "raw_contact_id=?",
new String[] { id }, null);
while (dataCursor.moveToNext()) {
String data1 = dataCursor.getString(0);
String mimetype = dataCursor.getString(1);
if ("vnd.android.cursor.item/name".equals(mimetype)) {
System.out.println("姓名=" + data1);
info.setName(data1);
} else if ("vnd.android.cursor.item/email_v2"
.equals(mimetype)) {
System.out.println("邮箱=" + data1);
info.setEmail(data1);
} else if ("vnd.android.cursor.item/phone_v2".equals(data1)) {
System.out.println("电话=" + data1);
info.setPhone(data1);
} else if ("vnd.android.cursor.item/im".equals(mimetype)) {
System.out.println("QQ=" + data1);
info.setQq(data1);
}
}
infos.add(info);
System.out.println("-------");
dataCursor.close();
}
}
cursor.close();
return infos;
}
}
新建ContactInfo.java
package com.wuyudong.getcontacts.domain;
public class ContactInfo {
private String name;
private String id;
private String phone;
private String email;
private String qq;
@Override
public String toString() {
return "ContactInfo [name=" + name + ", id=" + id + ", phone=" + phone
+ ", email=" + email + ", qq=" + qq + "]";
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getQq() {
return qq;
}
public void setQq(String qq) {
this.qq = qq;
}
}
最后调用相关api
package com.wuyudong.getcontacts;
import java.util.List;
import com.wuyudong.getcontacts.domain.ContactInfo;
import com.wuyudong.getcontacts.service.ContactInfoParser;
import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.content.ContentResolver;
import android.database.Cursor;
import android.view.Menu;
import android.view.View;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
/**
* 获取全部的联系人
*
* @param view
*/
public void click(View view) {
List<ContactInfo> infos = ContactInfoParser.findAll(this);
for (ContactInfo info : infos) {
System.out.println(info.toString());
}
}
}