MFMailComposeViewController在iOS 13模拟器和设备中的行为有所不同 [英] MFMailComposeViewController behaves differently in iOS 13 simulator and device

问题描述

我正在尝试在应用程序中显示MFMailComposeViewController.

I'm trying to display MFMailComposeViewController in an app.

if MFMailComposeViewController.canSendMail() {
    let mailComposeViewController = MFMailComposeViewController()
    mailComposeViewController.navigationBar.tintColor = .white
    mailComposeViewController.mailComposeDelegate = self
    mailComposeViewController.setToRecipients(["[e-mail]"])
    mailComposeViewController.setSubject("Feedback")
    present(mailComposeViewController, animated: true)
} else {
    print("This device is not configured to send email. Please set up an email account.")
}

在iOS 12中，它显示没有问题.在模拟器和设备中.

In iOS 12, it shows up without an issue. In both simulator and device.

但是当我在运行iOS 13的设备上运行同一项目时，看起来像这样.

But when I run the same project on a device running iOS 13, it looks like this.

导航栏颜色消失了.另外，发送按钮也不可见.

The navigation bar color is gone. Also the send button is also invisible.

所以我添加了mailComposeViewController.navigationBar.backgroundColor = .mv_primary，但是它仍然没有显示在设备上.奇怪的是，背景色显示在模拟器中.

So I added mailComposeViewController.navigationBar.backgroundColor = .mv_primary but it still doesn't show on the device. Strangely the background color shows in the simulator.

但是有一种奇怪的行为.当我在模拟器中运行MFMailComposeViewController时，它会立即自动关闭.

However there's a strange behavior. The MFMailComposeViewController immediately dismisses by itself when I run it in the simulator.

Xcode控制台中也会显示以下错误.

The following error also shows up in the Xcode console.

[公共] [FBSSystemService] [0x5f27]处理以下请求的打开请求时出错 com.apple.MailCompositionService:{ userInfo = { FBSOpenApplicationRequestID = 0x5f27; } 底层错误=; } 2019-11-01 14:40:05.214158 + 0530 MailCompose [11289:262267] [声明]连接 请求无效而没有恢复我们的_serviceSessionConnection. 这是一个错误. 2019-11-01 14:40:05.216901 + 0530 MailCompose [11289:262054] [常规] #CompositionServices _serviceViewControllerReady:NSError域= _UIViewServiceInterfaceErrorDomain代码= 0

[Common] [FBSSystemService][0x5f27] Error handling open request for com.apple.MailCompositionService: { userInfo = { FBSOpenApplicationRequestID = 0x5f27; } underlyingError = ; } 2019-11-01 14:40:05.214158+0530 MailCompose[11289:262267] [Assert] Connection request invalidated without resuming our _serviceSessionConnection. This is an error. 2019-11-01 14:40:05.216901+0530 MailCompose[11289:262054] [General] #CompositionServices _serviceViewControllerReady: NSError Domain=_UIViewServiceInterfaceErrorDomain Code=0

我猜奇怪的解雇错误是Xcode错误.但是，如何解决背景色和发送按钮未显示在设备中的问题?

I guess the weird dismiss error is a Xcode bug. But how do I fix the background color and the send button not showing up in the device?

这是我设置所有与导航栏相关的样式的方法.

This is how I set all the navigationbar related styles.

UINavigationBar.appearance().barTintColor = .mv_primary
UINavigationBar.appearance().tintColor = .white
UINavigationBar.appearance().titleTextAttributes = [NSAttributedString.Key.foregroundColor: UIColor.white]
if #available(iOS 11.0, *) {
    UINavigationBar.appearance().largeTitleTextAttributes = [NSAttributedString.Key.foregroundColor: UIColor.white]
}

演示项目

推荐答案

这是iOS 13中的新UI样式.您可以在Storyboard中禁用它或设置手册. 在iOS 13全屏中呈现模式

This is new UI Style from iOS 13. You can disable it in Storyboard or set manual. Presenting modal in iOS 13 fullscreen

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