android根据电话号码查询联系人名称，导出通讯录所有联系人的方法

1 /*
2      * 根据电话号码取得联系人姓名
3      */
4     public static String getContactNameByPhoneNumber(Context context, String address) {
5         String[] projection = { ContactsContract.PhoneLookup.DISPLAY_NAME,
6                 ContactsContract.CommonDataKinds.Phone.NUMBER };
7
8         // 将自己添加到 msPeers 中
9         Cursor cursor = context.getContentResolver().query(
10                 ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
11                 projection, // Which columns to return.
12                 ContactsContract.CommonDataKinds.Phone.NUMBER + " = '"
13                         + address + "'", // WHERE clause.
14                 null, // WHERE clause value substitution
15                 null); // Sort order.
16
17         if (cursor == null) {
18             Log.d(TAG, "getPeople null");
19             return null;
20         }
21         for (int i = 0; i < cursor.getCount(); i++) {
22             cursor.moveToPosition(i);
23
24             // 取得联系人名字
25             int nameFieldColumnIndex = cursor
26                     .getColumnIndex(ContactsContract.PhoneLookup.DISPLAY_NAME);
27             String name = cursor.getString(nameFieldColumnIndex);
28             return name;
29         }
30         return null;
31     }
32
33 /**
34      * 获取所有联系人内容
35      * @param context
36      * @param address
37      * @return
38      */
39     public static String getContacts(Context context) {
40         StringBuilder sb = new StringBuilder();
41
42         ContentResolver cr = context.getContentResolver();
43         Cursor cursor = cr.query(ContactsContract.Contacts.CONTENT_URI, null,
44                 null, null, null);
45
46         if (cursor.moveToFirst()) {
47             do {
48                 String contactId = cursor.getString(cursor
49                         .getColumnIndex(ContactsContract.Contacts._ID));
50                 String name = cursor
51                         .getString(cursor
52                                 .getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
53                 //第一条不用换行
54                 if(sb.length() == 0){
55                     sb.append(name);
56                 }else{
57                     sb.append("\n" + name);
58                 }
59
60                 Cursor phones = cr.query(
61                         ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
62                         null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID
63                                 + " = " + contactId, null, null);
64                 while (phones.moveToNext()) {
65                     String phoneNumber = phones
66                             .getString(phones
67                                     .getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
68                     // 添加Phone的信息
69                     sb.append("\t").append(phoneNumber);
70
71                 }
72                 phones.close();
73
74             } while (cursor.moveToNext());
75         }
76         cursor.close();
77         return sb.toString();

78 }