android如何获取手机联系人的数据库示例代码

很多人在做手机联系人的apk时会遇到，如何获取手机联系人数据库的问题，在这里我就简单的将代码写一下

package com.example.song.lx_day14_contacts; 

import android.content.ContentResolver;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView; 

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map; 

/**
 * 获取手机通讯录信息 展示并且修改
 * listview
 * simpleadapter
 * list<Map<String,String>>
 */
public class MainActivity extends AppCompatActivity {
  private String uri_raw = "content://com.android.contacts/raw_contacts";
  //直接获取data表中的 数据类型是phone
  private String uri_phone = "content://com.android.contacts/data/phones";
  //直接获取data表中数据类型是emali
  private String uri_emalis = "content://com.android.contacts/data/emails";
  private String uri_data = "content://com.android.contacts/data";
  private ListView listView;
  private TextView empty;
  private SimpleAdapter adapter;
  private List<Map<String, String>> data = new ArrayList<>();
  private ContentResolver contentResolver;//用来访问数据 

  @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);//设置空视图
    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();
    reloadListView();
  } 

  private void reloadListView() {
    data.clear();
    data.addAll(selectData());
    adapter.notifyDataSetChanged(); 

  } 

  //查询工作 用于查询data raw_contact标 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<>();
    while (cursor != null && cursor.moveToNext()) {
      String _id = cursor.getString(0);
      String displayName = cursor.getString(1);
      Map<String, String> map = new HashMap<>();
      map.put("_id", _id);
      map.put("display_Name", displayName);
      //根据_id 去data查手机号
      Cursor cursor1 = 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();
      //这里循环拿到手机号是因为有时联系人中 你可能一个人有几个电话
      while (cursor1 != null && cursor1.moveToNext()) {
        sb.append(cursor1.getString(0) + "\n");
      }
      cursor1.close();
      map.put("data1", sb.toString());
      list.add(map);
    }
    cursor.close();
    return list;
  }
}

在这里不要忘记了添加权限

<uses-permission android:name="android.permission.READ_CONTACTS" />
<uses-permission android:name="android.permission.WRITE_CONTACTS" /> 

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。