利用ContentResolver内容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：
    

    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> 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 map=new HashMap<>();
                    map.put("images",phoneName);
                    map.put("titles",phoneNumber);
                    datalistView.add(map);
                }
                //刷新适配器
                adapter.notifyDataSetChanged();
            }
            break;
    }

}