ios custom pixelationFor the custom-sized picture on the iPhone, the following code is needed to customize the resolution (800x800px) and the size (square) of the picture:
```
#import <AVFoundation/AVFoundation.h>
#import "UIImage+fixOrientation.h"
#define SCREEN_WIDTH (UIScreen mainScreen).bounds.size.width
#define SCREEN_HEIGHT (UIScreen mainScreen).bounds.size.height
//OCD's favorite
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
@interfaceViewController ()<UIImagePickerControllerDelegate,UINavigationControllerDelegate>
//Capture device, usually front camera, rear camera, microphone (audio input)
@property (nonatomic, strong) AVCaptureDevice *device;
//AvCaptureDeviceinput represents the input device. It uses AvCaptureDevice to initiate.
@property (nonatomic, strong) AVCaptureDeviceInput *input;
//Print image
@property (nonatomic,strong) AVCaptureStillImageOutput *imageOutput;
//session: He will combine the input and output together and start the capture device (camera)
@property (nonatomic, strong) AVCaptureSession *session;
//Image previews, displaying captured images in real-time
@property (nonatomic,strong) AVCaptureVideoPreviewLayer *previewLayer;
@property (nonatomic,strong) UIImage *image;
@property (nonatomic,strong) UILabel * msgLabel;
@end
- (void)viewDidLoad {
(super viewDidLoad);
// ---------------------------------
// ---------------------------------
(self setupUI);
// ---------------------------------
// ---------------------------------
(self cameraDistrict);
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
self.view.backgroundColor = (UIColor whiteColor);
//Device shooting begins
(self.session startRunning);
self.msgLabel.text = @"Prompt: click the photo button";
- (void)setupUI {
// ---------------------------------
// ---------------------------------UIButton * photoBtn = ((UIButton alloc) init);
photoBtn.frame = CGRectMake(SCREEN_WIDTH * 0.5 -50, SCREEN_HEIGHT - 200, 100, 100);
photoBtn.backgroundColor = (UIColor blackColor);
(photoBtn addTarget:self action:@selector(photoBtnDidClick) forControlEvents:UIControlEventTouchUpInside);
(photoBmn setTitle:@"Take a picture" forState: UIControl State Normal);
(self.view addSubview:photoBtn);
// ---------------------------------
// ---------------------------------self.msgLabel = ((UILabel alloc) init);
self.msgLabel.text = @"Prompt: click the photo button";
self.msgLabel.frame = CGRectMake(50,100, SCREEN_WIDTH, 100);
```
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