flutter - 更改Flutter中与contacts_service的联系人的电话号码和显示名称

Question

我正在尝试使用flutter contact_service dart软件包更新我的单个联系人数据。我是Flutter编程的新手，这就是为什么不明白我该怎么做的原因。
那是我的代码。

enter code here
 await ContactsService.updateContact(
            Contact(displayName: "yello", phones: abcd))
        .catchError((onError) {
      print(onError.toString());
    });

Answer 1

试试这个

/*this line fetches the contact whose familyName(last name) is "Jackson", incase 
if there's multiple contact with the same familyName then it'll select first one */
Contact contactToUpdate = _contacts
        .toList()
        .firstWhere((contact) => contact.familyName.startsWith("Jackson"));
//this line updates the givenName(first name) of fetched contact to "Michael"
    contactToUpdate.givenName = 'Michael';
    await ContactsService.updateContact(contactToUpdate);