andriod 读取通讯录

package com.example.yanlei.wifi;

import android.content.ContentResolver;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.provider.ContactsContract.PhoneLookup;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

  private ListView lvContacts=null;
  private Cursor cursor=null;
  private Button btnRead=null;


  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    TextView tv = new TextView(this);
    String str = "";
// 得到contentresolver对象
    ContentResolver cr = getContentResolver();
// 取得电话本中开始一项的光标，必须先moveToNext()
    Cursor cursor = cr.query(ContactsContract.Contacts.CONTENT_URI, null,
        null, null, null);
    while (cursor.moveToNext())
    {
//取得联系人的名字索引
      int nameIndex = cursor.getColumnIndex(PhoneLookup.DISPLAY_NAME);
      String contact = cursor.getString(nameIndex);
      str += (contact + ":" + "\n");
//取得联系人的ID索引值
      String contactId = cursor.getString(cursor
          .getColumnIndex(ContactsContract.Contacts._ID));
      Cursor phone = cr.query(
          ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,
          ContactsContract.CommonDataKinds.Phone.CONTACT_ID + "="
              + contactId, null, null);

//一个人可能有几个号码
      while (phone.moveToNext())
      {
        String strPhoneNumber = phone
            .getString(phone
                .getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
        str += (strPhoneNumber + "\n");
        Log.i("TAG","phoneNumber:"+strPhoneNumber+"contact"+contact);
      }
      phone.close();
    }
    cursor.close();
    tv.setText(str);
    setContentView(tv);

  }



}

原标题：andriod 读取通讯录

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