获取手机通讯录信息示例

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非常简单的的一个Demo示例直接上Java代码如下:
public class MainActivity extends Activity {      private String uri_raw = "content://com.android.contacts/raw_contacts";   private String uri_phone = "content://com.android.contacts/data/phones";      private ListView listView  = null;   private TextView empty    = null;   private ContentResolver contentResolver;    private List<Map<String, String>> data = new ArrayList<Map<String,String>>();   private SimpleAdapter adapter;      @Override   protected void onCreate(Bundle savedInstanceState) {      super.onCreate(savedInstanceState);      setContentView(R.layout.activity_main);            listView= (ListView) findViewById(R.id.lv);      empty = (TextView) findViewById(R.id.empty);      listView.setEmptyView(empty);        adapter = new SimpleAdapter(this, data, R.layout.item,             new String[]{"_id","display_Name","data1"}, new int []{R.id.id,R.id.name,R.id.number});          listView.setAdapter(adapter);          contentResolver = getContentResolver(); //赋值  不要导v4包      reloadListView();   }   private void reloadListView() {      // TODO Auto-generated method stub      data.clear(); //原来的数据清除      data.addAll(selectData());       adapter.notifyDataSetChanged();   }   //查询工作  用于查询Data  raw_contact表 返回List数据 在刷新Adapter   private List<Map<String, String>> selectData() {      //1.先查询 raw 获取_id 查出所有联系人.      //2.循环查询--> 根据_id 去data表中(_id = raw_contacts_id)查询 data1数据      Cursor cursor = contentResolver.query(Uri.parse(uri_raw),                    new String []{"_id","display_name"}, null, null, null);      //cursor返回的cursor数量不定      List<Map<String, String>>  list =  new ArrayList<Map<String,String>>();           while (cursor!= null && cursor.moveToNext()) {                String _id = cursor.getString(0);         String dispalyName  = cursor.getString(1);         Map<String, String> map = new HashMap<String, String>();         map.put("_id", _id);         map.put("display_Name", dispalyName);                 //根据_id 去data查手机号         Cursor cursor2 = contentResolver.query(Uri.parse(uri_phone), new String[]{"data1"},                "raw_contact_id=?", new String []{_id}, null);         //循环拿到手机号         StringBuffer sb = new StringBuffer();         while (cursor2!=null && cursor2.moveToNext()) {                       sb.append(cursor2.getString(0)+"\n");                    }         cursor2.close(); //关闭游标         map.put("data1", sb.toString());         list.add(map);      }          cursor.close();      return list;   }         }
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