我试图使用mailComposeController(_ controller: MFMailComposeViewController, didFinishWith result: MFMailComposeResult, error: Error?)方法实现MFMailComposeViewControllerDelegate，但得到错误：
- 无法声明与Swift中的“NSObjectProtocol”的一致性;“SettingsViewModel”应继承“NSObject”而不是“NSObjectProtocol”*
有什么问题吗？？
代码如下：
extension SettingsViewModel: MFMailComposeViewControllerDelegate {
public func mailComposeController(_ controller: MFMailComposeViewController, didFinishWith result: MFMailComposeResult, error: Error?) {
controller.dismiss(animated: true)
}
}字符串
1条答案
按热度按时间w7t8yxp51#
The
MFMailComposeViewControllerDelegateprotocol扩展了theNSObjectProtocolprotocol。您只能通过子类化NSObject来符合NSObjectProtocol。您需要在源代码中找到
SettingsViewModel的声明，并将其更改为扩展NSObject：字符串