我有一个简单的UITextView
,里面有一个电子邮件链接。文本视图是可选的,并检测链接。这样,您可以单击电子邮件,它会以模式方式打开一个MFMailComposeViewController
视图控制器。
但是,我在应用程序启动时进行了一些自定义:
[[UINavigationBar appearance] setBarTintColor: myGreyColor];
[[UINavigationBar appearance] setTitleTextAttributes:@{NSForegroundColorAttributeName: [UIColor whiteColor], NSFontAttributeName: myFont}];
[[UINavigationBar appearance] setTintColor:[UIColor whiteColor]];
这样,所有导航栏都是灰色的,带有白色文本和白色按钮,并且标题具有自定义字体。
我的问题是所有这些都不适用于邮件编辑器:栏是灰色的,标题是白色的,但字体是默认的 helvetica neue,按钮是默认的蓝色。而且,状态栏是黑色的,即使我的 Info.plist 说UIStatusBarStyleLightContent
和View controller-based status bar appearance
设置为 NO
.
当我手动调用它时,我知道如何自定义MFMailComposeViewController
,但在这里它会自动弹出。如何将我的样式应用于它?
编辑
自定义MFMailComposeViewController
的外观是一个非常糟糕的主意,很可能会让你的应用程序被苹果拒绝。仅当您不打算将应用提交给 Apple 时,才应使用以下解决方案。
看起来我解决了它,感谢雷·温德利希(再次.这是完整的代码:
- (void)viewDidLoad
{
[super viewDidLoad];
[…] // Initializations
// Link detection
[_textView.attributedText addAttribute:NSLinkAttributeName value:@"mail://contact" range:[[content string] rangeOfString:@"contact@mymail.com"]];
_textView.delegate = self;
}
// Handle the link tap yourself
- (BOOL)textView:(UITextView *)textView shouldInteractWithURL:(NSURL *)URL inRange:(NSRange)characterRange {
if ([[URL scheme] isEqualToString:@"mail"]) {
MFMailComposeViewController *mailVC = [[MFMailComposeViewController alloc] init];
[mailVC setToRecipients:@[@"contact@ mymail.com"]];
[mailVC setSubject:@"About QuickReminder for iOS"];
mailVC.mailComposeDelegate = self;
// Re-set the styling
[mailVC.navigationBar setBarTintColor:myGreyColor];
[mailVC.navigationBar setTitleTextAttributes:@{NSForegroundColorAttributeName: [UIColor whiteColor], NSFontAttributeName: myFont}];
[mailVC.navigationBar setTintColor:[UIColor whiteColor]];
[self presentViewController:mailVC animated:YES completion:^{
[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent];
}];
return NO;
}
return YES;
}
- (void)mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error
{
// Notifies users about errors associated with the interface
switch (result)
{
case MFMailComposeResultCancelled:
NSLog(@"Result: canceled");
break;
case MFMailComposeResultSaved:
NSLog(@"Result: saved");
break;
case MFMailComposeResultSent:
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Result" message:@"Mail Sent Successfully" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
[alert show];
}
break;
case MFMailComposeResultFailed:
NSLog(@"Result: failed");
break;
default:
NSLog(@"Result: not sent");
break;
}
[controller dismissViewControllerAnimated:YES completion:nil];
}
那么您应该通过以下外观方法,而不是修改整个应用程序导航栏:-
[[UINavigationBar appearanceWhenContainedIn:<#(__unsafe_unretained Class<UIAppearanceContainer> *), ...#>, nil]setTintColor:[UIColor greenColor]];
因为你的MFMailComposeViewController打开到你的应用程序中,而你正在修改整个应用程序的导航栏,所以MFMailComposeViewController的导航栏正在修改的原因。使用上面的外观方法你可以修改选定的类或父类,通过这些类你可以修改派生类,这不会修改MFMailComposeViewController,因为它不会是你的父类的一部分。
Swift 3:
extension MFMailComposeViewController {
override open func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
UIApplication.shared.statusBarStyle = UIStatusBarStyle.lightContent
}
open override func viewDidLoad() {
super.viewDidLoad()
navigationBar.isTranslucent = false
navigationBar.isOpaque = false
navigationBar.barTintColor = UIColor.white
navigationBar.tintColor = UIColor.white
}
}