Ios UIImagePickerController导致崩溃

我使用的是ios 8.4。在调试应用程序时，我展示了一个UIImagePickerController，xcode与iphone失去了连接。这以前不是问题

有时会出现图像选择器。。。但当我保存图像时，会发生崩溃

还有其他人经历过这种情况吗？如何修复

UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];
imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera;
imagePickerController.editing = NO;
imagePickerController.delegate = self;
imagePickerController.showsCameraControls=YES;
[self presentViewController:imagePickerController animated:YES completion:nil];

试试这个代码

- (IBAction)galleryButtonPressed:(id)sender
{
  UIImagePickerController *pickerController = [[UIImagePickerController alloc] init];
  if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {
    pickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    pickerController.allowsEditing = YES;
    pickerController.delegate = self;
    [self presentViewController:pickerController animated:YES completion:NULL];
  }
}

#pragma mark - UIImagePickerControllerDelegate
- (void)imagePickerController:(UIImagePickerController *)picker
didFinishPickingMediaWithInfo:(NSDictionary *)info
{
  [self dismissViewControllerAnimated:YES completion:NULL];

  UIImage *image = [info objectForKey:UIImagePickerControllerEditedImage];
  if (image == nil)
    image = [info objectForKey:UIImagePickerControllerOriginalImage];

  // Do something with the image
  [self.imageView setImage:image];
}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
    [self dismissViewControllerAnimated:NO completion:nil];
}

---

在问题中添加一些代码。为什么在第4行将self强制转换为（id）？你的viewController是UIImagePickerControllerDelegate吗？你说得对。我不需要。添加关于你坠机的详细信息。怎么了？哪一行代码导致了崩溃？