Objective c 邮件撰写视图控制器赢得';当从NSObject调用时,不会关闭
我有几个视图控制器需要发送电子邮件,所以为了保持面向对象,我创建了一个名为MessagingObject的NSObject类来处理这些消息。但我不知道如何消除MailComposeVC,因为它来自一个非VC对象。实现如下所示:Objective c 邮件撰写视图控制器赢得';当从NSObject调用时,不会关闭,objective-c,cocoa-touch,Objective C,Cocoa Touch,我有几个视图控制器需要发送电子邮件,所以为了保持面向对象,我创建了一个名为MessagingObject的NSObject类来处理这些消息。但我不知道如何消除MailComposeVC,因为它来自一个非VC对象。实现如下所示: //.m file #import "MessagingObject.h" #import <MessageUI/MessageUI.h> @interface MessagingObject () <MFMessageComposeViewContr
//.m file
#import "MessagingObject.h"
#import <MessageUI/MessageUI.h>
@interface MessagingObject () <MFMessageComposeViewControllerDelegate, MFMailComposeViewControllerDelegate>
@end
@implementation MessagingObject
.....
#pragma mark - Email Messaging Methods
- (void)sendEmail:(NSString *)description withSubject:(NSString *)subj toRecipients:(NSArray *) recipients fromController:(id)sender{
// Building the email content
MFMailComposeViewController *mc = [[MFMailComposeViewController alloc] init];
mc.mailComposeDelegate = sender; //Delegated to the sending VC so it could bring out the composer
[mc setSubject:subj];
[mc setMessageBody:description isHTML:YES];
[mc setToRecipients:recipients];
// Present mail view controller on screen from the sender VC
[sender presentViewController:mc animated:YES completion:NULL];
}
- (void) mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error{
//Check the result of the email being sent
switch (result)
{
case MFMailComposeResultCancelled:
NSLog(@"Mail cancelled");
break;
case MFMailComposeResultSaved:
NSLog(@"Mail saved");
break;
case MFMailComposeResultSent:
NSLog(@"Mail sent");
break;
case MFMailComposeResultFailed:
NSLog(@"Mail sent failure: %@", [error localizedDescription]);
break;
default:
break;
}
// Close the Mail Interface here, this won't work with *self* (which references the MessagingObject)
//[self dismissViewControllerAnimated:YES completion:NULL];
//This delegate will notify the corresponding VC when the mail has been sent
if (self.delegate && [self.delegate respondsToSelector:@selector(messageDidSend)]) {
[self.delegate messageDidSend];
}
}
@end
我尝试在头文件中使用名为MessengerDelegate的委托,并使用messageDidSend:方法通知VC何时关闭邮件组件。但是由于某种原因,mailComposeController did finishwithresult没有被调用,我认为这与我如何委托有关。不管怎么说,我怎么能拒绝MailComposeVC呢?您有两个问题:
mailComposeDelegate
设置为self
,而不是sender
,因为是self
实现了委托方法
mc.mailComposeDelegate = self;
控制器上调用解除…
[controller dismissViewControllerAnimated:YES completion:NULL];
在实例变量中保存
sender
。然后,您可以在需要关闭邮件生成器时引用。只是尝试了一下,但在需要时它不会被关闭,这在mailComposeController didFinishWithResult方法中。无论出于何种原因,该方法正在被跳过。请注意,当我直接从视图控制器调用此代码时,此代码工作正常。当我将mailComposeDelegate
设置为self
时,它会在应用程序发送电子邮件之前崩溃,因此我无法判断在Controller
上调用discouse…
是否有效。当我将mailComposeDelegate设置为self
时,它会使Mail Compose VC上的应用程序崩溃(更不用说到达didFinishWithResult'方法了),因此我无法判断在controller上调用
Discouse…`是否可行。可能我缺少委托方法实现?实际上,问题是由于aMessenger
在sendmail:
方法末尾超出了范围。使用实例变量而不是局部变量。好了!工作得很好!你帮我省去了头痛,谢谢!
[controller dismissViewControllerAnimated:YES completion:NULL];