当附加屏幕截图xcode 4.3时，无法删除电子邮件

Question

当我从我的应用程序通过电子邮件发送屏幕截图时，我无法在调用电子邮件客户端时关闭它。即使我点击了取消，也不会发生任何事情，有人能告诉我我做错了什么吗。

- (void)btn:(id)sender {

UIGraphicsBeginImageContext(self.view.frame.size);
[self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage * image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
NSData * imageData = UIImageJPEGRepresentation(image, 1.0);
if ( [MFMailComposeViewController canSendMail] ) {
    MFMailComposeViewController * mailComposer = [[[MFMailComposeViewController alloc] init] self];
    mailComposer.delegate = self;
    [mailComposer addAttachmentData:imageData mimeType:@"image/jpeg" fileName:@"attachment.jpg"];

    [self presentModalViewController:mailComposer animated:YES];
}
[self dismissModalViewControllerAnimated:YES];

Answer 1

您需要将委托设置为mailComposer.mailComposeDelegate = self;

然后调用邮件编写器委托方法中的disse方法：

- (void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error {
    // Do any processing before dismissing
    [self dismissModalViewControllerAnimated:YES];
}