android利用ContentResolver访问者获取手机联系人信息

利用contentresolver内容访问者，获取手机联系人信息我做了两种不同的做法。第一种，直接获取所有手机联系人信息，展示在listview中。第二种，通过butten按钮跳转到系统的手机联系人界面，单个获取手机联系人信息，展示在listview中，结果如下：

第一种：

第二种：

第一种：直接获取所有手机联系人信息

首先需要在androidmanifest.xml文件中添加权限：

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

  activity_main.xml布局：
  <linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" 
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.example.android_25.mainactivity">

    <listview
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:id="@+id/lv_lxr"
      >
    </listview>
  </linearlayout>

activity_xs.xml布局：

<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_xs"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.example.android_25.xsactivity">
  <textview
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:id="@+id/tv_name"
    />
    <textview
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:id="@+id/tv_telephone"
    />
  </linearlayout>

mainactivity类：

private listview lv_lxr;
private button b_name;
private contentresolver cr;
private list<map<string, object>> datalistview;

@override
protected void oncreate(bundle savedinstancestate) {
  super.oncreate(savedinstancestate);
  setcontentview(r.layout.activity_main);
  //获得listview
  lv_lxr = (listview) findviewbyid(r.id.lv_lxr);
  //得到访问者
  cr = getcontentresolver();
  //定义一个接收联系人姓名和电话号码的集合
  datalistview = new arraylist<>();
      uri uri=uri.parse("content://com.android.contacts/raw_contacts");
      cursor cursor= cr.query(uri,null,null,null,null);
      while(cursor.movetonext()){
        int id=cursor.getint(cursor.getcolumnindex("_id"));
        uri uridata=uri.parse("content://com.android.contacts/raw_contacts/"+id+"/data");
        cursor contactdata= cr.query(uridata,null,null,null,null);
        //用来装姓名
        string aa="";
        //用来装号码
        string bb="";
        while(contactdata.movetonext()){
          string type=contactdata.getstring(contactdata.getcolumnindex("mimetype"));
          //如果获取的是vnd.android.cursor.item/phone_v2则是号码
          if(type.equals("vnd.android.cursor.item/phone_v2")){
            bb=contactdata.getstring(contactdata.getcolumnindex("data1"));
            //如果获取的是vnd.android.cursor.item/name则是姓名
          }else if(type.equals("vnd.android.cursor.item/name")) {
            aa=contactdata.getstring(contactdata.getcolumnindex("data1"));
          }
        }
        //将用户名和号码放入map集合中
        map<string,object> map=new hashmap<>();
        map.put("images",aa);
        map.put("titles",bb);
        datalistview.add(map);
      }
  simpleadapter adapter=new simpleadapter(this, datalistview,r.layout.activity_xs,new string[]{"images","titles"},new int[]{r.id.tv_name,r.id.tv_telephone});
  lv_lxr.setadapter(adapter);
}

第二种：通过butten按钮跳转到系统的手机联系人界面，单个获取手机联系人信息，展示在listview中

activity_contacts.xml布局:

<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:tools="http://schemas.android.com/tools"
      android:id="@+id/activity_contacts"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:orientation="vertical"
      tools:context="com.example.android_25.contactsactivity">
    <linearlayout
      android:layout_width="match_parent"
      android:layout_height="wrap_content">
        <button
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:text="跳转到联系人页面"
          android:id="@+id/b_tzcontacts"
          />
    </linearlayout>
    <listview
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
        android:id="@+id/lv_contacts"
      ></listview>
</linearlayout>

contactsactivity类：

private button b_tzcontacts;
private string phonename;
private string phonenumber;
private list<map<string,object>> datalistview;
private listview lv_contacts;
private simpleadapter adapter;

@override
protected void oncreate(bundle savedinstancestate) {
  super.oncreate(savedinstancestate);
  setcontentview(r.layout.activity_contacts);
  //获得跳转到联系人的id
  b_tzcontacts =(button) findviewbyid(r.id.b_tzcontacts);
  //获得listview的id
  lv_contacts =(listview) findviewbyid(r.id.lv_contacts);
  //定义一个接受联系人姓名和电话号码的集合
  datalistview = new arraylist<>();
  //获取联系人的点击事件
  b_tzcontacts.setonclicklistener(new view.onclicklistener() {
    @override
    public void onclick(view view) {
      intent intentphone=new intent(intent.action_pick);
      intentphone.setdata(contactscontract.contacts.content_uri);
      startactivityforresult(intentphone,0);
    }
  });
  //r.layout.activity_xs就是上文的activity_xs布局问价
  adapter = new simpleadapter(this, datalistview, r.layout.activity_xs,new string[]{"images","titles"},new int[]{r.id.tv_name,r.id.tv_telephone});
  lv_contacts.setadapter(adapter);
}


  //获得返回的结果
@override
protected void onactivityresult(int requestcode, int resultcode, intent data) {
  super.onactivityresult(requestcode, resultcode, data);
  switch (requestcode){
    case 0:
      if(resultcode== activity.result_ok){
        uri uri=data.getdata();
        cursor cursor=managedquery(uri,null,null,null,null);
        cursor.movetofirst();
        string contactid=cursor.getstring(cursor.getcolumnindex(contactscontract.contacts._id));
        //得到contentresolver
        contentresolver contentresolver=getcontentresolver();
        cursor phone=contentresolver.query(contactscontract.commondatakinds.phone.content_uri,null,contactscontract.commondatakinds.phone.contact_id+"="+contactid,null,null);
        while (phone.movetonext()){
          //联系人
          phonename =phone.getstring(phone.getcolumnindex(contactscontract.commondatakinds.phone.display_name));
          //手机号码
          phonenumber =phone.getstring(phone.getcolumnindex(contactscontract.commondatakinds.phone.number));
          //格式化手机号
          phonenumber = phonenumber.replace("-","");
          phonenumber = phonenumber.replace("","");
          //将用户名和号码放入map集合中
          map<string,object> map=new hashmap<>();
          map.put("images",phonename);
          map.put("titles",phonenumber);
          datalistview.add(map);
        }
        //刷新适配器
        adapter.notifydatasetchanged();
      }
      break;
  }

}

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