通过电子邮件发送使用 imagePickerController 拍摄的照片

Question

此应用程序在 viewWillAppear 方法中加载设备的摄像头：

- (void)viewDidAppear:(BOOL)animated{
[super viewDidAppear:animated];

if (self.imageView.image == nil) {
    UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];
    imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera;
    imagePickerController.modalPresentationStyle = UIModalPresentationCurrentContext;
    imagePickerController.delegate = self;
    [self presentViewController:imagePickerController animated:YES completion:nil];
}
else {   }
}

委托方法已实现：

- (void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
UIImage *image = [info objectForKey:@"UIImagePickerControllerOriginalImage"];

[self dismissViewControllerAnimated:YES completion:nil];

// Pass the image to email composer after dismissing the camera. Delay allowed for cameraVC to dismiss.
[self performSelector:@selector(composeEmail) withObject:image afterDelay:1.0];
}

- (void) imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
[[picker parentViewController] dismissViewControllerAnimated:YES completion:nil];
}

拍摄照片并选择默认 "Use Photo" 按钮后，我想关闭相机 ViewController 并加载使用此方法的 emailComposer 视图控制器：

- (void) composeEmail: (UIImage *)image {

NSString *bodyHeader = @"Here are you directions:";
NSString *mailBody = [NSString stringWithFormat:@"%@\n%@", bodyHeader, googleMapsURL];

MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init];
picker.mailComposeDelegate = self;

[picker setSubject:@"Google Maps Directions"];
[picker setMessageBody:mailBody isHTML:NO];
[picker setToRecipients:@[@"john.doe@gmail.com"]];
[picker setModalTransitionStyle:UIModalTransitionStyleCrossDissolve];

// Create NSData object as PNG image data from camera image
NSData *data = UIImagePNGRepresentation(image);

// Attach image data to the email
// 'DestinationImage.png' is file name that will be attached to the email
[picker addAttachmentData:data mimeType:@"image/png" fileName:@"DestinationImage"];

[self presentViewController:picker animated:YES completion:nil];
}

（我在这里遗漏了一些 MessageUI 细节，但我已经测试过它并且我知道它可以正常工作）

拍摄的图像应传递给 emailComposer 并作为电子邮件附件。当我在我的设备上构建它并点击 "Use Photo" 按钮时，会抛出一个错误。错误消息指出 "Attempt to present MFMailCompseViewController on ViewController whose view is not in the window hierarchy!" 我只使用一个 ViewController 并且 VC 包含一个图像视图。

谁能帮我关闭摄像头并加载电子邮件编辑器？非常感谢！

Answer 1

要显示视图控制器，请使用以下内容：

[[[[[UIApplication sharedApplication] delegate] window] rootViewController] presentViewController: picker
                                                                                                 animated:YES
                                                                                               completion:nil];

您也可以查看此 Whosebug's question 以进一步了解

Answer 2

首先关闭 ImagePicker 然后显示你的邮件编辑器将工作 then.U r 关闭父 thta 的 y 它不工作 [yourpicker dismissViewControllerAnimated:YES completion:nil];

 - (void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
UIImage *image = [info objectForKey:@"UIImagePickerControllerOriginalImage"];

[yourpicker dismissViewControllerAnimated:YES completion:nil];

// Pass the image to email composer after dismissing the camera. Delay allowed for cameraVC to dismiss.

[self performSelector:@selector(composeEmail) withObject:image afterDelay:1.0];
 }

通过电子邮件发送使用 imagePickerController 拍摄的照片

Email a photo taken with imagePickerController

objective-c

uiviewcontroller

uiimagepickercontroller

ios

mfmailcomposeviewcontroller