java - 获取联系人错误 - 如何解决？

Question

我的问题是，我列出了联系人，电话号码显示得很好，但我无法使用姓名。

我尝试了多种方法来获取“DISPLAY_NAME”，但均无效

    private void initializeRecyclerView() {
        mUserList = findViewById(R.id.userList);
        mUserList.setNestedScrollingEnabled(false);
        mUserList.setHasFixedSize(false);
        mUserListLayoutManager = new LinearLayoutManager(getApplicationContext(), LinearLayout.VERTICAL, false);
        mUserList.setLayoutManager(mUserListLayoutManager);
        mUserListAdapter = new UserListAdapter(userList);
        mUserList.setAdapter(mUserListAdapter);
        getContactsList();
    }

This is my adaptor ^^

    private void getContactsList(){
        Cursor phones = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, null);
        while(phones.moveToNext()){
            String phone = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
            String name = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));

            UserObject mContact = new UserObject(name, phone);
            userList.add(mContact);
            mUserListAdapter.notifyDataSetChanged();
        }
    }

Answer 1

我正在通过此获取联系人:-

private void getContactsList(){
        Cursor phones = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, null);
        while(phones.moveToNext()){
            String phone = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
            String name = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
 UserObject mContact = new UserObject(name, phone);
            userList.add(mContact);
        }

 mUserListAdapter = new UserListAdapter(userList);
    mUserList.setAdapter(mUserListAdapter);
    }

并设置获取联系人的权限:-

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