Android读取联系人Demo

内容提供者，SimpleAdapter

 1 public class MainActivity extends AppCompatActivity {
 2
 3     @Override
 4     protected void onCreate(Bundle savedInstanceState) {
 5         super.onCreate(savedInstanceState);
 6         setContentView(R.layout.activity_main);
 7
 8         ListView listView = (ListView) findViewById(R.id.lv);
 9
10         ArrayList<HashMap<String, String>> readContact = readContact();
11
12         listView.setAdapter(new SimpleAdapter(this,readContact,R.layout.item_layout,
13                 new String[] {"name","number"},new int[]{R.id.tv_name,R.id.tv_number}));
14     }
15
16     private ArrayList<HashMap<String, String>> readContact() {
17
18         ArrayList<HashMap<String, String>> list = new ArrayList<HashMap<String, String>>();
19
20         //查询联系人数据
21         Cursor cursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
22                 null,null,null,null);
23         //遍历联系人
24         while (cursor.moveToNext()) {
25             HashMap<String, String> map = new HashMap<String, String>();
26             //获取联系人姓名
27             String displayName = cursor.getString(
28                     cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
29             map.put("name",displayName);
30             //获取联系人手机号
31             String number = cursor.getString(
32                     cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
33             map.put("number",number);
34             Log.e("test","姓名：" + displayName + "手机号：" + number);　　　　　　　　　　//将map添加到list集合
35             list.add(map);
36         }
37
38         cursor.close();
39
40         return list;
41     }
42 }