ContentResolver（获取系统联系人）

public class MainActivity extends AppCompatActivity {

    private ContentResolver contentResolver;
    private ListView contacts_list;
    private Cursor cursor1;
    private List> list=new ArrayList<>();
    private SimpleAdapter simpleAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //初始化 控件
        initview();
    }

    //初始化 控件
    private void initview(){

        //获取内容 访问者
        contentResolver = getContentResolver();

        contacts_list = (ListView) findViewById(R.id.contacts_list);

        //获得所有 联系人
        findViewById(R.id.getAllContacts_btn).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                Uri uri=Uri.parse("content://com.android.contacts/raw_contacts");

                Cursor cursor=contentResolver.query(uri,null,null,null,null);

                while (cursor.moveToNext()){
                   //获得所有联系人的 id
                   int id=cursor.getInt(cursor.getColumnIndex("_id"));
                   String name=cursor.getString(cursor.getColumnIndex("display_name"));

                    //继续获取相对应的联系人的数据（电话号码）
                    Uri uriAll=Uri.parse("content://com.android.contacts/raw_contacts/"+id+"/data");

                    cursor1 = contentResolver.query(uriAll,null,null,null,null);
                      //获取联系人 id  名字  电话
                      while (cursor1.moveToNext()){

                          String data1=cursor1.getString(cursor1.getColumnIndex("data1"));
                          String type=cursor1.getString(cursor1.getColumnIndex("mimetype"));

                          if("vnd.android.cursor.item/phone_v2".equals(type)){
                              Map map=new HashMap();
                              map.put("id",id+"");
                              map.put("name",name);
                              map.put("phone",data1);
                              list.add(map);
                          }

                    }

                    simpleAdapter = new SimpleAdapter(MainActivity.this,list, R.layout.contacts_item,new String[]{"id","name","phone"},new int[]{R.id.contacts_id_tv,R.id.contacts_name_tv,R.id.contacts_phone_tv});
                    contacts_list.setAdapter(simpleAdapter);
                }

            }
        });

        //页面跳转 获取指定联系人
        findViewById(R.id.ItetentJumpForSingleContacts_btn).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent = new Intent(Intent.ACTION_PICK,
                        ContactsContract.Contacts.CONTENT_URI);
                MainActivity.this.startActivityForResult(intent, 1);
            }
        });

    }
   

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        // TODO Auto-generated method stub
        super.onActivityResult(requestCode, resultCode, data);
        switch (requestCode) {
            case 1:
                if (resultCode == RESULT_OK) {
                    Uri contactData = data.getData();
                    Cursor cursor = managedQuery(contactData, null, null, null,
                            null);
                    cursor.moveToFirst();
                    String num = this.getContactPhone(cursor);
                    Toast.makeText(this, ""+num, Toast.LENGTH_SHORT).show();
                }
                break;

            default:
                break;
        }
    }

    private String getContactPhone(Cursor cursor) {
        // TODO Auto-generated method stub
        int phoneColumn = cursor
                .getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER);
        int phoneNum = cursor.getInt(phoneColumn);
        String result = "";
        if (phoneNum > 0) {
            // 获得联系人的ID号
            int idColumn = cursor.getColumnIndex(ContactsContract.Contacts._ID);
            String contactId = cursor.getString(idColumn);
            // 获得联系人电话的cursor
            Cursor phone = getContentResolver().query(
                    ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
                    null,
                    ContactsContract.CommonDataKinds.Phone.CONTACT_ID + "="
                            + contactId, null, null);
            if (phone.moveToFirst()) {
                for (; !phone.isAfterLast(); phone.moveToNext()) {
                    int index = phone
                            .getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);
                    int typeindex = phone
                            .getColumnIndex(ContactsContract.CommonDataKinds.Phone.TYPE);
                    int phone_type = phone.getInt(typeindex);
                    String phoneNumber = phone.getString(index);
                    result = phoneNumber;
                }
                if (!phone.isClosed()) {
                    phone.close();
                }
            }
        }
        return result;
    }
}

手动展示：

  首先获取系统访问者ContnetResolver,

   再通过Uri uri=Uri.parse("content://com.android.contacts/raw_contacts");获得手机中所有的联系人Id，以及名字，

   再使用 Uri uriAll=Uri.parse("content://com.android.contacts/raw_contacts/"+id+"/data");根据id查询该人的电话，

跳转系统界面，吐司电话号码：

  Intent intent = new Intent(Intent.ACTION_PICK,
                        ContactsContract.Contacts.CONTENT_URI);
                MainActivity.this.startActivityForResult(intent, 1);

 跳转到系统的联系人选择界面，只能单选；

   通过回调方法传回来的值，判断有无选中；

   有选中获得号码，吐司； 

   无则无操作；