我有以下代码让用户拍照或从相册中选择。虽然从相机拍摄照片效果很好，但当我选择触发从相册中选择动作的按钮时，相册会出现，但您实际上无法选择照片。启动从相册中选择方法时，我确实在控制台中收到警告，而当我启动从相机方法中获取时，我没有收到警告。以下是相关代码和警告。
。H
@interface sitespecTakePhoto : UIViewController <UIImagePickerControllerDelegate, UINavigationControllerDelegate>
@property (strong, nonatomic) NSString *pbvlocname;
@property (strong, nonatomic) IBOutlet UITextField *descTextField;
@property (strong, nonatomic) IBOutlet UIImageView *imageField;
@property (strong, nonatomic) UIImagePickerController *imagePicker;
@property (nonatomic, strong) IBOutlet UILabel *successLabel;
@property UIImage *imageToSend;
@property NSString *desc;
- (IBAction)imageFromCamera:(id)sender;
- (IBAction)resignKeyboard:(id)sender;
-(IBAction)uploadButtonClicked:(id)sender;
@end
.m
- (IBAction)imageFromCamera:(id)sender
{
imagePicker = [[UIImagePickerController alloc] init];
imagePicker.delegate = self;
imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
imagePicker.cameraDevice = UIImagePickerControllerCameraDeviceRear;
[self presentViewController:imagePicker animated:YES completion:nil];
}
- (IBAction)imageFromAlbum:(id)sender
{
imagePicker = [[UIImagePickerController alloc] init];
imagePicker.delegate = self;
imagePicker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
[self presentViewController:imagePicker animated:YES completion:nil];
}
#pragma mark - Image Picker Delegate Methods
// Dismiss the image picker on selection and use the resulting image in our ImageView
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage: (UIImage *)image editingInfo:(NSDictionary *)editingInfo
{
[[imagePicker presentingViewController] dismissViewControllerAnimated:YES completion:nil];
[imageField setImage:image];
imageToSend = image;
}
// On cancel, only dismiss the picker controller
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
[[imagePicker presentingViewController] dismissViewControllerAnimated:YES completion:nil];
}
- (IBAction)resignKeyboard:(id)sender
{
desc = descTextField.text;
[sender resignFirstResponder];
}
以及当我按下按钮触发 imageFromAlbum 方法时收到的警告：
Warning: Attempt to present <UIImagePickerController: 0x1d59d6b0> on <UINavigationController: 0x1e0319f0> while a presentation is in progress!
再次显示相册，但是当您点击图像或按下取消按钮时没有任何反应，在我看来，这个方法几乎没有识别 UIImagePicker 委托方法，而 imageFromCamera 方法是。提前感谢您的帮助！