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根据系统API, 封装二维码扫描(QRCode)

QRCode

根据系统API, 封装二维码扫描

  • 1.link AVFoundation.framework

  • 2.#import <AVFoundation/AVFoundation.h>

  • 3.拷贝以下代码

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    /*!
     *  扫一扫
     */
    - (void)intoQRCodeVC {
        NSString *mediaType = AVMediaTypeVideo;
        AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:mediaType];
        if(authStatus == AVAuthorizationStatusDenied){
            if (IS_VAILABLE_IOS8) {
                UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"相机权限受限" message:@"请在iPhone的\"设置->隐私->相机\"选项中,允许\"自游邦\"访问您的相机." preferredStyle:UIAlertControllerStyleAlert];
                [alert addAction:[UIAlertAction actionWithTitle:@"好" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
                }]];
                [alert addAction:[UIAlertAction actionWithTitle:@"去设置" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
                    if ([self canOpenSystemSettingView]) {
                        [self systemSettingView];
                    }
                }]];
                [self presentViewController:alert animated:YES completion:nil];
            } else {
                UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"相机权限受限" message:@"请在iPhone的\"设置->隐私->相机\"选项中,允许\"自游邦\"访问您的相机." delegate:nil cancelButtonTitle:@"好的" otherButtonTitles:nil];
                [alert show];
            }

            return;
        }
        
        QRCodeController *qrcodeVC = [[QRCodeController alloc] init];
        qrcodeVC.view.alpha = 0;
        [qrcodeVC setDidReceiveBlock:^(NSString *result) {
            NSLog(@"%@", result);
        }];
        AppDelegate *del = (AppDelegate *)[UIApplication sharedApplication].delegate;
        [del.window.rootViewController addChildViewController:qrcodeVC];
        [del.window.rootViewController.view addSubview:qrcodeVC.view];
        [UIView animateWithDuration:0.3 delay:0 options:UIViewAnimationOptionCurveEaseInOut animations:^{
            qrcodeVC.view.alpha = 1;
        } completion:^(BOOL finished) {
        }];
    }

    /**
     *  是否可以打开设置页面
     *
     *  @return
     */
    - (BOOL)canOpenSystemSettingView {
        if (IS_VAILABLE_IOS8) {
            NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
            if ([[UIApplication sharedApplication] canOpenURL:url]) {
                return YES;
            } else {
                return NO;
            }
        } else {
            return NO;
        }
    }

    /**
     *  跳到系统设置页面
     */
    - (void)systemSettingView {
        if (IS_VAILABLE_IOS8) {
            NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
            if ([[UIApplication sharedApplication] canOpenURL:url]) {
                [[UIApplication sharedApplication] openURL:url];
            }
        }
    }