objective-c : dealing with UIImagePickerController and UIActionSheet

dealing with UIImagePickerController and UIActionSheet.m

//dealing with UIImagePickerController and UIActionSheet



//ImageViewController.h

@interface ImageViewController : UIViewController

@end




//ImageViewController.m

@interface ImageViewController () <UIImagePickerControllerDelegate, UINavigationControllerDelegate, UIActionSheetDelegate>

@property (nonatomic, weak) IBOutlet UIImageView * imageView;
@property (nonatomic, weak) IBOutlet UILabel *imageLabel;

@end



@implementation ImageViewController
{
    UIImagePickerController *_imagePicker; //이미지 피커
    UIActionSheet *_actionSheet; //show Photo Menu
    UIImage *_image;
}


#pragma mark - View Life Cycle

- (void)viewDidLoad
{
    [super viewDidLoad];
    self.imageLabel.text = @"Image shows here";
}



#pragma mark - ImagePicker Controller

- (IBAction)showPhotoMenu:(id)sender
{
    if (debug==1) {NSLog(@"Running %@ '%@'", self.class, NSStringFromSelector(_cmd));}
    
    if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
        
        _actionSheet = [[UIActionSheet alloc] initWithTitle:nil
                                                   delegate:self
                                          cancelButtonTitle:@"Cancel"
                                     destructiveButtonTitle:nil
                                          otherButtonTitles:@"Take Photo", @"Choose From Library", nil];
        
        [_actionSheet showInView:self.view];
        
    } else {
        
        [self choosePhotoFromLibrary];
    }
}



- (void)takePhoto
{
    _imagePicker = [[UIImagePickerController alloc] init];
    _imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
    _imagePicker.delegate = self;
    _imagePicker.allowsEditing = YES;
    [self presentViewController:_imagePicker animated:YES completion:nil];
}



- (void)choosePhotoFromLibrary
{
    _imagePicker = [[UIImagePickerController alloc] init];
    _imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    _imagePicker.delegate = self;
    _imagePicker.allowsEditing = YES;
    [self presentViewController:_imagePicker animated:YES completion:nil];
}




#pragma mark - Image

- (void)showImage:(UIImage *)image
{
    self.imageView.image = image;
    self.imageView.hidden = NO;
    self.imageLabel.hidden = YES;
}




#pragma mark - UIImagePickerController Delegate

//must conform to both UIImagePickerControllerDelegate and UINavigationControllerDelegate
//but don’t have to implement any of the UINavigationControllerDelegate methods.
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    if (debug==1) {NSLog(@"Running %@ '%@'", self.class, NSStringFromSelector(_cmd));}
    
    _image = info[UIImagePickerControllerEditedImage];
    [self showImage:_image];
    
    [self dismissViewControllerAnimated:YES completion:nil];
}



- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
    if (debug==1) {NSLog(@"Running %@ '%@'", self.class, NSStringFromSelector(_cmd));}
    
    [self dismissViewControllerAnimated:YES completion:nil];
}



#pragma mark - UIActionSheet Delegate

- (void)actionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex
{
    if (buttonIndex == 0) {
        
        [self takePhoto];
        
    } else if (buttonIndex == 1) {
        
        [self choosePhotoFromLibrary];
    }
    
    _actionSheet = nil;
}




#pragma mark - Dealloc

- (void)dealloc
{
    NSLog(@"dealloc %@", self);
}




#pragma mark - Memory Warning

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}




@end