Test Take Photo

//
//  ViewController.m
//  LearnTakePho
//
//  Created by Thieu Mao on 5/21/17.
//  Copyright © 2017 Hay Nhanh. All rights reserved.
//

#import "ViewController.h"

@interface ViewController () <UIImagePickerControllerDelegate, UINavigationControllerDelegate>
@property (weak, nonatomic) IBOutlet UIImageView *imageView;
- (IBAction)takePhoto:(id)sender;
- (IBAction)selectPhoto:(id)sender;
- (IBAction)testButton:(id)sender;
@end

@implementation ViewController

UIImagePickerController *poc;

- (void)viewDidLoad {
    [super viewDidLoad];
    if (![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
        UIAlertView *myAlertView = [[UIAlertView alloc] initWithTitle:@"Error"
                                                              message:@"Device has no camera"
                                                             delegate:nil
                                                    cancelButtonTitle:@"OK"
                                                    otherButtonTitles: nil];
        [myAlertView show];
    }

    poc = [[UIImagePickerController alloc] init];
    poc.delegate = self;
    poc.allowsEditing = YES;
    poc.sourceType = UIImagePickerControllerSourceTypeCamera;
//    poc.showsCameraControls = NO;
}

- (IBAction)takePhoto:(id)sender {
    UIImagePickerController *picker = [[UIImagePickerController alloc] init];
    picker.delegate = self;
    picker.allowsEditing = YES;
    picker.sourceType = UIImagePickerControllerSourceTypeCamera;
    [self presentViewController:picker animated:YES completion:NULL];
}

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

- (IBAction)testButton:(id)sender {
    UIButton *but= [UIButton buttonWithType:UIButtonTypeRoundedRect];
    [but addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
    [but setFrame:CGRectMake(52, 252, 215, 40)];
    [but setTitle:@"Click Here" forState:UIControlStateNormal];
    [but setExclusiveTouch:YES];
    [poc.view addSubview:but];
    [self presentViewController:poc animated:YES completion:NULL];

}

-(void) buttonClicked:(UIButton*)sender {
    [poc takePicture];
}

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

}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
    [picker dismissViewControllerAnimated:YES completion:NULL];
}

@end