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iOS自定义相机

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我是靠谱客的博主 拉长巨人，这篇文章主要介绍iOS自定义相机，现在分享给大家，希望可以做个参考。

1.方法一：截屏：

WYPCustomCameraVC：

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//
//  WYPCustomCameraVC.h
//  RockUnion
//
//  Created by 王彦平 on 2021/12/28.
//  Copyright © 2021 王彦平. All rights reserved.
//

#import "WYPBaseVC.h"
#import "WYPCustomCameraView.h"

NS_ASSUME_NONNULL_BEGIN

@protocol PopCameraControllerDelegate <NSObject>

-(void)popControllerWithImage:(UIImage *)image;

@end
@interface WYPCustomCameraVC : WYPBaseVC

@property (nonatomic, weak) id<PopCameraControllerDelegate>delegate;

//0身份证正面//1身份证反面//2银行卡
@property (nonatomic, assign) WYPCameraActionType cameraType;

@end

NS_ASSUME_NONNULL_END



//
//  WYPCustomCameraVC.m
//  RockUnion
//
//  Created by 王彦平 on 2021/12/28.
//  Copyright © 2021 王彦平. All rights reserved.
//

#import "WYPCustomCameraVC.h"
#import <AVFoundation/AVFoundation.h>

@interface WYPCustomCameraVC ()<AVCaptureMetadataOutputObjectsDelegate,UIAlertViewDelegate>

@property (nonatomic, strong) WYPCustomCameraView *cameraView;

@property (nonatomic, strong)UIImageView *preView;

//捕获设备，通常是前置摄像头，后置摄像头，麦克风（音频输入）
@property(nonatomic)AVCaptureDevice *device;

//AVCaptureDeviceInput 代表输入设备，他使用AVCaptureDevice 来初始化
@property(nonatomic)AVCaptureDeviceInput *input;

//当启动摄像头开始捕获输入
@property(nonatomic)AVCaptureMetadataOutput *output;

@property (nonatomic)AVCaptureStillImageOutput *ImageOutPut;

//session：由他把输入输出结合在一起，并开始启动捕获设备（摄像头）
@property(nonatomic)AVCaptureSession *session;

//图像预览层，实时显示捕获的图像
@property(nonatomic)AVCaptureVideoPreviewLayer *previewLayer;

@property (nonatomic)BOOL isflashOn;
@property (nonatomic)UIImage *image;
@property (nonatomic)UIImageView *imageView;
@property (nonatomic)BOOL canCa;

@end

@implementation WYPCustomCameraVC

#pragma mark - lazy
-(WYPCustomCameraView *)cameraView{
    if (!_cameraView) {
        _cameraView = [WYPCustomCameraView WYPCustomCameraView];
        
        WS(weakSelf);
        _cameraView.btnBlock = ^(NSInteger tag) {
            
            [weakSelf cameraViewBtnClickedWithTag:tag];
            
        };
    }
    
    return _cameraView;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    
    _canCa = [self canUserCamear];
    if (_canCa) {
        [self customCamera];
        [self setUI];

    }else{
        return;
    }

}

-(void)viewWillAppear:(BOOL)animated{
    [super viewWillAppear:animated];
    [self setNav];
}

//设置状态栏
-(void)setNav{
    
    //    设置状态栏
    [Tools setStatusBarBackgroundColor:[UIColor clearColor]];
    self.navigationController.navigationBar.hidden = YES;
    [UIApplication sharedApplication].statusBarHidden = YES;
}


//设置UI
-(void)setUI{
    
    self.cameraView.cameraType = self.cameraType;
    self.view.backgroundColor = [UIColor clearColor];
    self.cameraView.frame = self.view.bounds;
    [self.view addSubview:self.cameraView];

}

#pragma mark - 按钮点击事件
-(void)cameraViewBtnClickedWithTag:(NSInteger)tag{
    
    switch (tag) {
        case 0:{//返回按钮点击事件
            [self.navigationController popViewControllerAnimated:YES];
        }break;
        case 1:{//电灯按钮点击事件
        }break;
        case 2:{//拍照按钮点击事件
            [self shutterCamera];
        }break;

        default:
            break;
    }
}

-(void)viewWillDisappear:(BOOL)animated{
    [super viewWillDisappear:animated];
    
    self.navigationController.navigationBar.hidden = NO;
    [UIApplication sharedApplication].statusBarHidden = NO;
}

//AVMediaTypeVideo设置
- (void)customCamera{
    self.view.backgroundColor = [UIColor whiteColor];
    
    //使用AVMediaTypeVideo 指明self.device代表视频，默认使用后置摄像头进行初始化
    self.device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
    
    //使用设备初始化输入
    self.input = [[AVCaptureDeviceInput alloc]initWithDevice:self.device error:nil];
    
    //生成输出对象
    self.output = [[AVCaptureMetadataOutput alloc]init];
    self.ImageOutPut = [[AVCaptureStillImageOutput alloc] init];
 
    //生成会话，用来结合输入输出
    self.session = [[AVCaptureSession alloc]init];
    if ([self.session canSetSessionPreset:AVCaptureSessionPreset1280x720]) {
        
        self.session.sessionPreset = AVCaptureSessionPreset1280x720;
        
    }
    if ([self.session canAddInput:self.input]) {
        [self.session addInput:self.input];
    }
    
    if ([self.session canAddOutput:self.ImageOutPut]) {
        [self.session addOutput:self.ImageOutPut];
    }
    
    //使用self.session，初始化预览层，self.session负责驱动input进行信息的采集，layer负责把图像渲染显示
    self.previewLayer = [[AVCaptureVideoPreviewLayer alloc]initWithSession:self.session];
    self.previewLayer.frame = CGRectMake(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
    self.previewLayer.videoGravity = AVLayerVideoGravityResizeAspectFill;
    [self.view.layer addSublayer:self.previewLayer];
    
    //开始启动
    [self.session startRunning];
    if ([_device lockForConfiguration:nil]) {
        if ([_device isFlashModeSupported:AVCaptureFlashModeAuto]) {
            [_device setFlashMode:AVCaptureFlashModeAuto];
        }
        //自动白平衡
        if ([_device isWhiteBalanceModeSupported:AVCaptureWhiteBalanceModeAutoWhiteBalance]) {
            [_device setWhiteBalanceMode:AVCaptureWhiteBalanceModeAutoWhiteBalance];
        }
        [_device unlockForConfiguration];
    }
}
- (void)FlashOn{
    if ([_device lockForConfiguration:nil]) {
        if (_isflashOn) {
            if ([_device isFlashModeSupported:AVCaptureFlashModeOff]) {
                [_device setFlashMode:AVCaptureFlashModeOff];
                _isflashOn = NO;
//                [_flashButton setTitle:@"闪光灯关" forState:UIControlStateNormal];
            }
        }else{
            if ([_device isFlashModeSupported:AVCaptureFlashModeOn]) {
                [_device setFlashMode:AVCaptureFlashModeOn];
                _isflashOn = YES;
//                [_flashButton setTitle:@"闪光灯开" forState:UIControlStateNormal];
            }
        }

        [_device unlockForConfiguration];
    }
}
- (void)changeCamera{
    NSUInteger cameraCount = [[AVCaptureDevice devicesWithMediaType:AVMediaTypeVideo] count];
    if (cameraCount > 1) {
        NSError *error;
        
        CATransition *animation = [CATransition animation];
        
        animation.duration = .5f;
        
        animation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
        
        animation.type = @"oglFlip";
        AVCaptureDevice *newCamera = nil;
        AVCaptureDeviceInput *newInput = nil;
        AVCaptureDevicePosition position = [[_input device] position];
        if (position == AVCaptureDevicePositionFront){
            newCamera = [self cameraWithPosition:AVCaptureDevicePositionBack];
            animation.subtype = kCATransitionFromLeft;
        }
        else {
            newCamera = [self cameraWithPosition:AVCaptureDevicePositionFront];
            animation.subtype = kCATransitionFromRight;
        }
        
        newInput = [AVCaptureDeviceInput deviceInputWithDevice:newCamera error:nil];
        [self.previewLayer addAnimation:animation forKey:nil];
        if (newInput != nil) {
            [self.session beginConfiguration];
            [self.session removeInput:_input];
            if ([self.session canAddInput:newInput]) {
                [self.session addInput:newInput];
                self.input = newInput;
                
            } else {
                [self.session addInput:self.input];
            }
            
            [self.session commitConfiguration];
            
        } else if (error) {
            NSLog(@"toggle carema failed, error = %@", error);
        }
        
    }
}
- (AVCaptureDevice *)cameraWithPosition:(AVCaptureDevicePosition)position{
    NSArray *devices = [AVCaptureDevice devicesWithMediaType:AVMediaTypeVideo];
    for ( AVCaptureDevice *device in devices )
        if ( device.position == position ) return device;
    return nil;
}
- (void)focusGesture:(UITapGestureRecognizer*)gesture{
    CGPoint point = [gesture locationInView:gesture.view];
    [self focusAtPoint:point];
}
- (void)focusAtPoint:(CGPoint)point{
    CGSize size = self.view.bounds.size;
    CGPoint focusPoint = CGPointMake( point.y /size.height ,1-point.x/size.width );
    NSError *error;
    if ([self.device lockForConfiguration:&error]) {
        
        if ([self.device isFocusModeSupported:AVCaptureFocusModeAutoFocus]) {
            [self.device setFocusPointOfInterest:focusPoint];
            [self.device setFocusMode:AVCaptureFocusModeAutoFocus];
        }
        
        if ([self.device isExposureModeSupported:AVCaptureExposureModeAutoExpose ]) {
            [self.device setExposurePointOfInterest:focusPoint];
            [self.device setExposureMode:AVCaptureExposureModeAutoExpose];
        }
        
        [self.device unlockForConfiguration];
//        _focusView.center = point;
//        _focusView.hidden = NO;
        [UIView animateWithDuration:0.3 animations:^{
//            _focusView.transform = CGAffineTransformMakeScale(1.25, 1.25);
        }completion:^(BOOL finished) {
            [UIView animateWithDuration:0.5 animations:^{
//                _focusView.transform = CGAffineTransformIdentity;
            } completion:^(BOOL finished) {
//                _focusView.hidden = YES;
            }];
        }];
    }
    
}
#pragma mark - 截取照片
- (void) shutterCamera{
    AVCaptureConnection * videoConnection = [self.ImageOutPut connectionWithMediaType:AVMediaTypeVideo];
    if (!videoConnection) {
        NSLog(@"take photo failed!");
        [SVProgressHUD showErrorWithStatus:@"拍照失败，稍后重试！" duration:2.0];
        [self.navigationController popViewControllerAnimated:YES];
        
        return;
    }
    
    [self.ImageOutPut captureStillImageAsynchronouslyFromConnection:videoConnection completionHandler:^(CMSampleBufferRef imageDataSampleBuffer, NSError *error) {
        if (imageDataSampleBuffer == NULL) {
            return;
        }
        NSData * imageData = [AVCaptureStillImageOutput jpegStillImageNSDataRepresentation:imageDataSampleBuffer];
        UIImage *imageResult = [UIImage imageWithData:imageData];
        [self.session stopRunning];
        
        //改变该图片的方向
        self.image = [UIImage imageWithCGImage:imageResult.CGImage
                                         scale:imageResult.scale
                                   orientation:UIImageOrientationUp];
        
        if (self.image) {
            if (self.delegate && [self.delegate respondsToSelector:@selector(popControllerWithImage:)]) {
                [self.delegate popControllerWithImage:self.image];
                [self.navigationController popViewControllerAnimated:YES];
            }
        }
        
        //        [self saveImageToPhotoAlbum:self.image];
        //        self.imageView = [[UIImageView alloc]initWithFrame:self.previewLayer.frame];
        //        [self.view insertSubview:_imageView belowSubview:_PhotoButton];
        //        self.imageView.layer.masksToBounds = YES;
        //        self.imageView.image = _image;
        NSLog(@"image size = %@",NSStringFromCGSize(self.image.size));
    }];
}

#pragma - 保存至相册
- (void)saveImageToPhotoAlbum:(UIImage*)savedImage{
    UIImageWriteToSavedPhotosAlbum(savedImage, self, @selector(image:didFinishSavingWithError:contextInfo:), NULL);
}

// 指定回调方法
- (void)image: (UIImage *) image didFinishSavingWithError: (NSError *) error contextInfo: (void *) contextInfo{
    NSString *msg = nil ;
    if(error != NULL){
        msg = @"保存图片失败" ;
    }else{
        msg = @"保存图片成功" ;
    }
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"保存图片结果提示"
                                            message:msg
                                            delegate:self
                                          cancelButtonTitle:@"确定"
                                          otherButtonTitles:nil];
    [alert show];
}

//取消按钮点击事件
-(void)cancle{
    [self.imageView removeFromSuperview];
    [self.session startRunning];
}
#pragma mark - 检查相机权限
- (BOOL)canUserCamear{
    AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
    if (authStatus == AVAuthorizationStatusDenied) {
        UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:@"请打开相机权限" message:@"设置-隐私-相机" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:@"取消", nil];
        alertView.tag = 100;
        [alertView show];
        return NO;
    }
    else{
        return YES;
    }
    return YES;
}

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
    if (buttonIndex == 0 && alertView.tag == 100) {
        
        NSURL * url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
        
        if([[UIApplication sharedApplication] canOpenURL:url]) {
            
            [[UIApplication sharedApplication] openURL:url];
            
        }
    }
}



@end

WYPCustomCameraView：

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//
//  WYPCustomCameraView.h
//  RockUnion
//
//  Created by 王彦平 on 2021/12/29.
//  Copyright © 2021 王彦平. All rights reserved.
//

#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

typedef NS_ENUM(NSInteger, WYPCameraActionType) {
    WYPCameraFrontIDCardPicture = 0,//身份证正面
    WYPCameraReverseIDCardPicture,//身份证反面
    WYPCameraBankCardPicture,//银行卡
};

typedef void(^TypeBtnClicedBlock)(NSInteger tag);

@interface WYPCustomCameraView : UIView

@property (nonatomic, strong) TypeBtnClicedBlock btnBlock;

@property (nonatomic, assign) WYPCameraActionType cameraType;

+(instancetype)WYPCustomCameraView;

@end

NS_ASSUME_NONNULL_END


//
//  WYPCustomCameraView.m
//  RockUnion
//
//  Created by 王彦平 on 2021/12/29.
//  Copyright © 2021 王彦平. All rights reserved.
//

#import "WYPCustomCameraView.h"
#import <AVFoundation/AVFoundation.h>

@interface WYPCustomCameraView()

@property (weak, nonatomic) IBOutlet UILabel *cardLabel;
@property (weak, nonatomic) IBOutlet NSLayoutConstraint *cardLabelRightMargin;

@property (weak, nonatomic) IBOutlet UILabel *lightLabel;
@property (weak, nonatomic) IBOutlet NSLayoutConstraint *lightLabelRightMargin;

@property (weak, nonatomic) IBOutlet UIView *maskView;

@property (weak, nonatomic) IBOutlet UIImageView *sqImgView;

@property (nonatomic, strong)UIImageView *preView;

//捕获设备，通常是前置摄像头，后置摄像头，麦克风（音频输入）
@property(nonatomic)AVCaptureDevice *device;

@property (weak, nonatomic) IBOutlet UIImageView *embleImgView;//国徽图标
@property (weak, nonatomic) IBOutlet UIImageView *portraitImgView;//头像图标

@end
@implementation WYPCustomCameraView

+(instancetype)WYPCustomCameraView{
    
    return [[[NSBundle mainBundle] loadNibNamed:@"WYPCustomCameraView" owner:nil options:nil]lastObject];
}

-(void)awakeFromNib{
    [super awakeFromNib];
    
    [self setUI];
    
    [self customCamera];
}

//设置UI
-(void)setUI{
    
    self.backgroundColor = [UIColor clearColor];
    
    CGAffineTransform transform=  CGAffineTransformRotate(self.cardLabel.transform, M_PI_2);
    self.cardLabel.transform = transform;
    self.cardLabelRightMargin.constant = -100;
    
    CGAffineTransform transform1 =  CGAffineTransformRotate(self.lightLabel.transform, M_PI_2);

    self.lightLabel.transform = transform1;
    self.lightLabelRightMargin.constant = -15;

    
    self.maskView.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.3];

    
    self.maskView.frame = CGRectMake(0,0, SCREEN_WIDTH, SCREEN_HEIGHT);
    UIBezierPath *path = [UIBezierPath bezierPathWithRect:self.maskView.bounds];
    
    // 创建矩形
    CGFloat circlePathWidth = SCREEN_WIDTH - 42.0 - 44.0;
    CGFloat circlePathHeight = circlePathWidth * 445.0/289.0;
    CGRect circlePathRect = CGRectMake(42.0, (SCREEN_HEIGHT - circlePathHeight)*0.5, circlePathWidth, circlePathHeight);
    
    UIBezierPath *circlePath = [UIBezierPath bezierPathWithRect:circlePathRect];
    [path appendPath:circlePath];
    

    CAShapeLayer *shaperLayer = [CAShapeLayer layer];
    shaperLayer.frame = self.maskView.bounds;
    shaperLayer.fillColor = [UIColor colorWithHexString:@"000000" alpha:0.3].CGColor;
    // 设置填充规则
    shaperLayer.fillRule = kCAFillRuleEvenOdd;
    shaperLayer.path = path.CGPath;

    [self.maskView.layer addSublayer: shaperLayer];

}

- (void)customCamera{
    //使用AVMediaTypeVideo 指明self.device代表视频，默认使用后置摄像头进行初始化
    self.device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
}

#pragma mark - 按钮点击事件
//返回按钮点击事件
- (IBAction)backBtnClicked:(UIButton *)sender {
    if (self.btnBlock) {
        self.btnBlock(sender.tag - 10);
    }
}

//电灯按钮点击事件
- (IBAction)lightBtnClicked:(UIButton *)sender {
    
    if (self.btnBlock) {
        self.btnBlock(sender.tag - 10);
    }
    
//    [self flashOn:sender.selected];
    [self turnTorchOn:sender];
}

//拍照按钮点击事件
- (IBAction)cameraBtnClicked:(UIButton *)sender {
    if (self.btnBlock) {
        self.btnBlock(sender.tag - 10);
    }

}

//闪光灯开关
- (void)flashOn:(BOOL)isflashOn{
    if (!isflashOn) {
        self.lightLabel.text = @"闪光灯关";
    }else{
        self.lightLabel.text = @"闪光灯开";
    }
    
}

//手电筒
-(void)turnTorchOn: (UIButton *) sender{
    sender.selected = !sender.selected;
    if (!sender.selected) {
        self.lightLabel.text = @"轻触关闭";
    }else{
        self.lightLabel.text = @"轻触照亮";
    }

    Class captureDeviceClass = NSClassFromString(@"AVCaptureDevice");
    if (captureDeviceClass !=nil) {
        AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
        if ([device hasTorch] && [device hasFlash]){
            [device lockForConfiguration:nil];
            if (sender.selected) {
                [device setTorchMode:AVCaptureTorchModeOn];
//                [device setFlashMode:AVCaptureFlashModeOn];
            } else {
                [device setTorchMode:AVCaptureTorchModeOff];
//                [device setFlashMode:AVCaptureFlashModeOff];
            }
            [device unlockForConfiguration];
        }else{
            NSLog(@"初始化失败");
        }
    }else{
        NSLog(@"没有闪光设备");
    }
}

//设置拍照类型
-(void)setCameraType:(WYPCameraActionType)cameraType{
    _cameraType = cameraType;
 
    switch (cameraType) {
        case WYPCameraFrontIDCardPicture:{//身份证正面
            
            self.portraitImgView.hidden = NO;
            self.embleImgView.hidden = YES;
            
        }break;
        case WYPCameraReverseIDCardPicture:{//身份证反面
            
            self.portraitImgView.hidden = YES;
            self.embleImgView.hidden = NO;

        }break;
        default:{//银行卡
            self.portraitImgView.hidden = YES;
            self.embleImgView.hidden = YES;

        }break;
    }
}


@end

调用：

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    if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
        [actionSheet addAction:[UIAlertAction actionWithTitle:@"相机" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
            //            self.imagePickerPhotoVC.sourceType = UIImagePickerControllerSourceTypeCamera;
            //            self.imagePickerPhotoVC.modalPresentationStyle =  UIModalPresentationOverCurrentContext;
            //            [self presentViewController:self.imagePickerPhotoVC animated:YES completion:nil];
            
            WYPCustomCameraVC *cameraVC = [[WYPCustomCameraVC alloc]init];
            cameraVC.hidesBottomBarWhenPushed = YES;
            cameraVC.delegate = self;
            [self.navigationController pushViewController:cameraVC animated:YES];
            
            if(self.transitionImgView.tag == 100){//身份证正面
                cameraVC.cameraType = WYPCameraFrontIDCardPicture;
                
            }else if (self.transitionImgView.tag == 200){//身份证反面
                cameraVC.cameraType = WYPCameraReverseIDCardPicture;
                
            }else if (self.transitionImgView.tag == 300){//银行卡照
                cameraVC.cameraType = WYPCameraBankCardPicture;
            }
            
        }]];
    }
    
    [actionSheet addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
        [self setStatusBarBackgroundColor:[UIColor clearColor]];
    }]];

2.方法二：WYPImagePickerController 继承UIImagePickerController：

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//
//  WYPImagePickerController.h
//  RockUnion
//
//  Created by 王彦平 on 2021/12/29.
//  Copyright © 2021 王彦平. All rights reserved.
//

#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

@interface WYPImagePickerController : UIImagePickerController

@end

NS_ASSUME_NONNULL_END


//
//  WYPImagePickerController.m
//  RockUnion
//
//  Created by 王彦平 on 2021/12/29.
//  Copyright © 2021 王彦平. All rights reserved.
//

#import "WYPImagePickerController.h"
#import "WYPImageView.h"
#import "WYPCustomCameraView.h"

@interface WYPImagePickerController ()

@property (nonatomic, strong) WYPCustomCameraView *cameraView;

@end

@implementation WYPImagePickerController

#pragma mark - lazy
-(WYPCustomCameraView *)cameraView{
    if (!_cameraView) {
        _cameraView = [WYPCustomCameraView WYPCustomCameraView];
        
        WS(weakSelf);
        _cameraView.btnBlock = ^(NSInteger tag) {
            [weakSelf cameraViewBtnClickedWithTag:tag];
            
        };
    }
    
    return _cameraView;
}


- (void)viewDidLoad {
    [super viewDidLoad];
    
    WYPImageView *imageView = [[WYPImageView alloc]initWithFrame:self.view.bounds];
    self.cameraView.frame = imageView.bounds;
    [imageView addSubview:self.cameraView];
    self.cameraOverlayView = imageView;
}
-(void)viewWillAppear:(BOOL)animated{
    [super viewWillAppear:animated];

    [self setNav];
}

//设置状态栏
-(void)setNav{
    
    //    设置状态栏
    [Tools setStatusBarBackgroundColor:[UIColor clearColor]];
    self.navigationController.navigationBar.hidden = YES;
    [UIApplication sharedApplication].statusBarHidden = YES;
}

-(void)viewWillDisappear:(BOOL)animated{
    [super viewWillDisappear:animated];
    
    self.navigationController.navigationBar.hidden = NO;
    [UIApplication sharedApplication].statusBarHidden = NO;
}

#pragma mark - 按钮点击事件
-(void)cameraViewBtnClickedWithTag:(NSInteger)tag{
    
    switch (tag) {
        case 0:{//返回按钮点击事件
            
            [self dismissViewControllerAnimated:YES completion:nil];
            
        }break;
        case 1:{//电灯按钮点击事件
            [self flashModeOn];
        }break;
        case 2:{//拍照按钮点击事件
            [self takePicture];
        }break;

        default:
            break;
    }
}

//闪光灯
-(void)flashModeOn{
    if (self.cameraFlashMode == UIImagePickerControllerCameraFlashModeAuto) {
        self.cameraFlashMode = UIImagePickerControllerCameraFlashModeOn;
    }else{
        self.cameraFlashMode = UIImagePickerControllerCameraFlashModeOff;
    }
}

- (void)imagePickerController:(UIImagePickerController *)picker
didFinishPickingMediaWithInfo:(NSDictionary *)info
{
//    NSString *oldKey = self.item.itemKey;
//
//    // Did the item already have an image?
//    if (oldKey) {
//        // Delete the old image
//        [[BNRImageStore sharedStore] deleteImageForKey:oldKey];
//    }
//
//    UIImage *image;
//    // Get picked image from info dictionary
//    if (info[UIImagePickerControllerEditedImage]) {
//        image =info[UIImagePickerControllerEditedImage];
//    }
//    else
//    {
//      image = info[UIImagePickerControllerOriginalImage];
//    }
//
//
//
//
//    // Store the image in the BNRImageStore for this key
//    [[BNRImageStore sharedStore] setImage:image forKey:self.item.itemKey];
//
//    // Put that image onto the screen in our image view
//    self.imageView.image = image;

    // Take image picker off the screen -
    // you must call this dismiss method
    [self dismissViewControllerAnimated:YES completion:NULL];
}

@end

//

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//
//  WYPCustomCameraView.h
//  RockUnion
//
//  Created by 王彦平 on 2021/12/29.
//  Copyright © 2021 王彦平. All rights reserved.
//

#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

typedef NS_ENUM(NSInteger, WYPCameraActionType) {
    WYPCameraFrontIDCardPicture = 0,//身份证正面
    WYPCameraReverseIDCardPicture,//身份证反面
    WYPCameraBankCardPicture,//银行卡
};

typedef void(^TypeBtnClicedBlock)(NSInteger tag);

@interface WYPCustomCameraView : UIView

@property (nonatomic, strong) TypeBtnClicedBlock btnBlock;

@property (nonatomic, assign) WYPCameraActionType cameraType;

+(instancetype)WYPCustomCameraView;

@end

NS_ASSUME_NONNULL_END




//
//  WYPCustomCameraView.m
//  RockUnion
//
//  Created by 王彦平 on 2021/12/29.
//  Copyright © 2021 王彦平. All rights reserved.
//

#import "WYPCustomCameraView.h"
#import <AVFoundation/AVFoundation.h>

@interface WYPCustomCameraView()

@property (weak, nonatomic) IBOutlet UILabel *cardLabel;
@property (weak, nonatomic) IBOutlet NSLayoutConstraint *cardLabelRightMargin;

@property (weak, nonatomic) IBOutlet UILabel *lightLabel;
@property (weak, nonatomic) IBOutlet NSLayoutConstraint *lightLabelRightMargin;

@property (weak, nonatomic) IBOutlet UIView *maskView;

@property (weak, nonatomic) IBOutlet UIImageView *sqImgView;

@property (nonatomic, strong)UIImageView *preView;

//捕获设备，通常是前置摄像头，后置摄像头，麦克风（音频输入）
@property(nonatomic)AVCaptureDevice *device;

@property (weak, nonatomic) IBOutlet UIImageView *embleImgView;//国徽图标
@property (weak, nonatomic) IBOutlet UIImageView *portraitImgView;//头像图标

@end
@implementation WYPCustomCameraView

+(instancetype)WYPCustomCameraView{
    
    return [[[NSBundle mainBundle] loadNibNamed:@"WYPCustomCameraView" owner:nil options:nil]lastObject];
}

-(void)awakeFromNib{
    [super awakeFromNib];
    
    [self setUI];
    
    [self customCamera];
}

//设置UI
-(void)setUI{
    
    self.backgroundColor = [UIColor clearColor];
    
    CGAffineTransform transform=  CGAffineTransformRotate(self.cardLabel.transform, M_PI_2);
    self.cardLabel.transform = transform;
    self.cardLabelRightMargin.constant = -100;
    
    CGAffineTransform transform1 =  CGAffineTransformRotate(self.lightLabel.transform, M_PI_2);

    self.lightLabel.transform = transform1;
    self.lightLabelRightMargin.constant = -15;

    
    self.maskView.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.3];

    
    self.maskView.frame = CGRectMake(0,0, SCREEN_WIDTH, SCREEN_HEIGHT);
    UIBezierPath *path = [UIBezierPath bezierPathWithRect:self.maskView.bounds];
    
    // 创建矩形
    CGFloat circlePathWidth = SCREEN_WIDTH - 42.0 - 44.0;
    CGFloat circlePathHeight = circlePathWidth * 445.0/289.0;
    CGRect circlePathRect = CGRectMake(42.0, (SCREEN_HEIGHT - circlePathHeight)*0.5, circlePathWidth, circlePathHeight);
    
    UIBezierPath *circlePath = [UIBezierPath bezierPathWithRect:circlePathRect];
    [path appendPath:circlePath];
    

    CAShapeLayer *shaperLayer = [CAShapeLayer layer];
    shaperLayer.frame = self.maskView.bounds;
    shaperLayer.fillColor = [UIColor colorWithHexString:@"000000" alpha:0.3].CGColor;
    // 设置填充规则
    shaperLayer.fillRule = kCAFillRuleEvenOdd;
    shaperLayer.path = path.CGPath;

    [self.maskView.layer addSublayer: shaperLayer];

}

- (void)customCamera{
    //使用AVMediaTypeVideo 指明self.device代表视频，默认使用后置摄像头进行初始化
    self.device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
}

#pragma mark - 按钮点击事件
//返回按钮点击事件
- (IBAction)backBtnClicked:(UIButton *)sender {
    if (self.btnBlock) {
        self.btnBlock(sender.tag - 10);
    }
}

//电灯按钮点击事件
- (IBAction)lightBtnClicked:(UIButton *)sender {
    
    if (self.btnBlock) {
        self.btnBlock(sender.tag - 10);
    }
    
//    [self flashOn:sender.selected];
    [self turnTorchOn:sender];
}

//拍照按钮点击事件
- (IBAction)cameraBtnClicked:(UIButton *)sender {
    if (self.btnBlock) {
        self.btnBlock(sender.tag - 10);
    }

}

//闪光灯开关
- (void)flashOn:(BOOL)isflashOn{
    if (!isflashOn) {
        self.lightLabel.text = @"闪光灯关";
    }else{
        self.lightLabel.text = @"闪光灯开";
    }
    
}

//手电筒
-(void)turnTorchOn: (UIButton *) sender{
    sender.selected = !sender.selected;
    if (!sender.selected) {
        self.lightLabel.text = @"闪光灯关";
    }else{
        self.lightLabel.text = @"闪光灯开";
    }

    Class captureDeviceClass = NSClassFromString(@"AVCaptureDevice");
    if (captureDeviceClass !=nil) {
        AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
        if ([device hasTorch] && [device hasFlash]){
            [device lockForConfiguration:nil];
            if (sender.selected) {
                [device setTorchMode:AVCaptureTorchModeOn];
                [device setFlashMode:AVCaptureFlashModeOn];
            } else {
                [device setTorchMode:AVCaptureTorchModeOff];
                [device setFlashMode:AVCaptureFlashModeOff];
            }
            [device unlockForConfiguration];
        }else{
            NSLog(@"初始化失败");
        }
    }else{
        NSLog(@"没有闪光设备");
    }
}

//设置拍照类型
-(void)setCameraType:(WYPCameraActionType)cameraType{
    _cameraType = cameraType;
 
    switch (cameraType) {
        case WYPCameraFrontIDCardPicture:{//身份证正面
            
            self.portraitImgView.hidden = NO;
            self.embleImgView.hidden = YES;
            
        }break;
        case WYPCameraReverseIDCardPicture:{//身份证反面
            
            self.portraitImgView.hidden = YES;
            self.embleImgView.hidden = NO;

        }break;
        default:{//银行卡
            self.portraitImgView.hidden = YES;
            self.embleImgView.hidden = YES;

        }break;
    }
}


@end

最后

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