iOS 10无法再在MFMessageComposeViewController上设置barcolor和色调

Question

下面的代码适用于iOS 9.x或更低版本,由于某种原因,如果iOS 10不起作用

 if([MFMessageComposeViewController canSendText])
             {
                 controller.body = message;
                 NSString *tel = pContact.tlc;
                 controller.recipients = pContact.tlc?@[tel]:nil;
                 controller.messageComposeDelegate = self;
                 controller.navigationBar.tintColor = [UIColor whiteColor];
                 controller.navigationBar.barTintColor = [UIColor blueColor];
                 [self presentViewController:controller animated:YES completion:nil];
             }

它是破碎还是做了一些改变.不知道这里遗漏了什么.我在黑暗中(漆黑)

编辑:我试图在一个新的空单视图项目上使用一些测试代码,我遇到了同样的问题.

@IBAction func SMS(_ sender: AnyObject) {
        let composeVC = MFMessageComposeViewController()
        composeVC.messageComposeDelegate = self

        // Configure the fields of the interface.
        composeVC.recipients = ["5555555555"]
        composeVC.body = "Hello from California!"
        composeVC.navigationBar.tintColor = UIColor.green
        composeVC.navigationBar.barTintColor = UIColor.purple
        // Present the view controller modally.
        self.present(composeVC, animated: true, completion: nil)
    } 

编辑:UINavigationBar外观可以在测试应用程序中为背景或barTint设置颜色,但我仍然无法设置测试应用程序的文本颜色.我正在使用的应用程序已使用UINavigationBar外观在应用程序中设置导航栏颜色,但这不会影响SMS的导航栏,因为它出现白色背景和白色文本.无法更改文本颜色或背景颜色使此视图无法使用.

Answer 1

问题

• 对于iOS10.x某些原因barTintColor不工作的一些共享容器.
• 但是有一种解决方法可以修复所有共享容器上的导航栏颜色.

解

• 使用UINavigationBar.appearance()更改导航栏的颜色.
• 使用backgroundColor属性和setBackgroundImage(_:for:)方法来修复导航栏颜色.

码

/// Method to set navigation bar color
func setNavigationBar() -> Void
{
    // barTintColor will apply color for the app's navigation bar
    UINavigationBar.appearance().barTintColor       = UIColor.blue

    // backgroundColor will apply color for some of the sharing container's app except for Messages app
    UINavigationBar.appearance().backgroundColor    = UIColor.blue

    // backgroundImage will apply the color image for navigation bar for most of the sharing container's except for `Notes`
    UINavigationBar.appearance().setBackgroundImage(UIImage(color: UIColor.blue), for:UIBarMetrics.default)
}

/// UIImage extension to create an image from specified color
extension UIImage
{
    public convenience init?(color: UIColor, size: CGSize = CGSize(width: 1, height: 1)) {
        let rect = CGRect(origin: .zero, size: size)
        UIGraphicsBeginImageContextWithOptions(rect.size, false, 0.0)
        color.setFill()
        UIRectFill(rect)
        let image = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()

        guard let cgImage = image?.cgImage else { return nil }
        self.init(cgImage: cgImage)
    }
}

希望能帮助到你!.