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Cullen Ambrose
6,203 PointsUIImagePicker briefly disappears and then returns again. It seems like viewDidAppear is being called again?
Every time the UIImagePicker is dismissed via method [self dismissViewControllerAnimated: YES completion: nil]; the image picker reappears instantly barely showing the tableViewController underneath the stack. I believe it has something to do with the viewWillAppear being called again after the view controller is dismissed but I don't know where to put the imagePicker then because viewDidLoad will not create the camera every time it is needed.. please help!
Here are the viewWillAppear and didFinishPickingMediaInfo methods:
-
(void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated];
self.imagePicker = [[UIImagePickerController alloc] init]; self.imagePicker.delegate = self; self.imagePicker.allowsEditing = NO; self.imagePicker.videoMaximumDuration = 10;
if ([UIImagePickerController isSourceTypeAvailable: UIImagePickerControllerSourceTypeCamera]){ self.imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera; }else { self.imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; }
self.imagePicker.mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:self.imagePicker.sourceType];
[self presentViewController:self.imagePicker animated:NO completion:nil];
}
//....
-
(void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];
if ([mediaType isEqualToString:(NSString *)kUTTypeImage]) {
self.image = [info objectForKey:UIImagePickerControllerOriginalImage]; if (self.imagePicker.sourceType == UIImagePickerControllerSourceTypeCamera){ UIImageWriteToSavedPhotosAlbum(self.image, nil, nil, nil); }
} else { NSURL *imagePickerURL = [info objectForKey:UIImagePickerControllerMediaURL]; self.videoFilePath = [imagePickerURL path];
if(UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(self.videoFilePath)){ UISaveVideoAtPathToSavedPhotosAlbum(self.videoFilePath, nil, nil, nil); }
[self dismissViewControllerAnimated: YES completion: nil];
}
}
1 Answer
Robert Bojor
Courses Plus Student 29,439 PointsHi Cullen,
To bypass UIImagePicker being shown again when viewWillAppear: is recalled you can use a condition similar to this:
if (self.image == nil && [self.videoFilePath length] == 0) {
self.imagePicker = [[UIImagePickerController alloc] init];
self.imagePicker.delegate = self;
self.imagePicker.allowsEditing = NO;
self.imagePicker.videoMaximumDuration = 10;
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
self.imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
} else {
self.imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
}
self.imagePicker.mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:self.imagePicker.sourceType];
[self presentViewController:self.imagePicker animated:NO completion:nil];
}
This will ensure that the picker controller won't be called again if you have already selected an image or a video file.