UIImagePickerController in iOS

In this tutorial ,  I will tell you about UIImagePickerController in iOS. UIImagePicker are used to pick images either from CameraRoll or from Camera Application.

Step 1 :   Create a single view application.

Step 2 :   Drag two buttons and a imageView on the storyboard.

and add constraints of UIImageView and UIButton .

Step 3 :    Make connection with UIViewController .

Step 4 :    Add UIButton`s Action to the UIViewController 

Step 5:    In ViewController.h ,  add imagePicker delegate and UINavigationControllerDelegate

@interface ViewController : UIViewController<UIImagePickerControllerDelegate,UINavigationControllerDelegate>

Step 6:  In ViewController.m , add the UIImagePicker`s on the button`s action as follows : 

	- (IBAction)choosePhotoAction:(id)sender {
	UIImagePickerController *picker = [[UIImagePickerController alloc] init];
	picker.delegate = self;
	picker.allowsEditing = YES;
	picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
	[self presentViewController:picker animated:YES completion:NULL];
	}
	- (IBAction)takePhotoAction:(id)sender {
	if (![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
	UIAlertController *alertController = [UIAlertController
	alertControllerWithTitle:@"Error"
	message:@"No camera found"
	preferredStyle:UIAlertControllerStyleAlert];
	UIAlertAction *okAction = [UIAlertAction
	actionWithTitle:NSLocalizedString(@"OK", @"OK action")
	style:UIAlertActionStyleDefault
	handler:^(UIAlertAction *action)
	{
	NSLog(@"OK action");
	}];
	[alertController addAction:okAction];
	[self presentViewController:alertController animated:YES completion:nil];
	}
	else
	{
	UIImagePickerController *picker = [[UIImagePickerController alloc] init];
	picker.delegate = self;
	picker.allowsEditing = YES;
	picker.sourceType = UIImagePickerControllerSourceTypeCamera;
	[self presentViewController:picker animated:YES completion:NULL];
	}
	}

view raw ImagePicker hosted with ❤ by GitHub

Here , on taking picture from camera ,firstly we are checking whether device has camera or not. 

Step 7:   Implementing UIImagePickerDelegates :

	- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
	UIImage *chosenImage = info[UIImagePickerControllerEditedImage];
	self.myImageView.image = chosenImage;
	[picker dismissViewControllerAnimated:YES completion:NULL];
	}
	- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
	[picker dismissViewControllerAnimated:YES completion:NULL];
	}

view raw ImagePickerDelegates hosted with ❤ by GitHub

Step 8:  Build and run the app .

Your camera application is been created in which you can take photos from camera roll or click photos from camera . 


Thank you .   :)


UIPickerView With Done button