【iOS开发实用框架】扫一扫

竹林风

   导读

【iOS开发实用框架】基础教程目录    http://www.sufeinet.com/thread-24348-1-1.html

【iOS开发实用框架】实例目录贴    http://www.sufeinet.com/thread-24654-1-1.html

      
   

代码 ：
1.HomePageVC.m

[Objective-C] 纯文本查看 复制代码

UIButton *button = [MTools createButtonWithTitle:@"扫一扫" Font:kFont(15) TitleColor:Color_fff];
    button.frame = CGRectMake(50, 100, ScreenWidth - 50*2, 50);
    button.backgroundColor = kColor(orangeColor);
    [button addButtonClickBlock:^(UIButton *btn) {
        SZQRCodeViewController *qr = [SZQRCodeViewController new];
        qr.scanResult = ^(NSString *strResult) {
            self->lbl.text = [NSString stringWithFormat:@"扫码结果：%@",strResult];
        };
        pushToViewController(self, qr, YES);
    }];
    [self.view addSubview:button];
    
    lbl = [MTools creatLblWithFont:kFont(14) TextColor:Color_333];
    lbl.frame = CGRectMake(button.frameX, button.frameBottom + 20, button.frameWidth, 50);
    [self.view addSubview:lbl];

2.SZQRCodeVC.m

[Objective-C] 纯文本查看 复制代码

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    self.view.backgroundColor = kColor(blackColor);
    
    self.title = @"扫一扫";
    
    NSString *mediaType = AVMediaTypeVideo;
    
    AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:mediaType];
    
    if(authStatus == AVAuthorizationStatusRestricted || authStatus == AVAuthorizationStatusDenied){
        
        UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"没有相机权限" message:@"请去设置-隐私-相机中对App授权" preferredStyle:UIAlertControllerStyleAlert];
        UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"好的" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
            [self.navigationController popViewControllerAnimated:YES];
        }];
        [alertController addAction:okAction];
        
        hasCameraRight = NO;
        return;
    }
    hasCameraRight = YES;
    
    imageView = [[UIImageView alloc]initWithFrame:CGRectMake(Width(30), 100, ScreenWidth - Width(30)*2, 0.8 * self.view.frame.size.width)];
    imageView.image = [UIImage imageNamed:@"contact_scanframe"];
    [self.view addSubview:imageView];
    
    UILabel * labIntroudction= [[UILabel alloc] initWithFrame:CGRectMake(0, imageView.frameBottom + 10, 290, 30)];
    labIntroudction.backgroundColor = [UIColor clearColor];
    labIntroudction.textColor=[UIColor whiteColor];
    labIntroudction.textAlignment = NSTextAlignmentCenter;
    labIntroudction.font = kFont(15);
    labIntroudction.text=@"将取景框对准二维码，即自动扫描";
    [self.view addSubview:labIntroudction];
    
    
    upOrdown = NO;
    num =0;
    _line = [[UIImageView alloc] initWithFrame:CGRectMake(50, 110, 220, 2)];
    _line.image = [UIImage imageNamed:@"line"];
    [self.view addSubview:_line];
    
    [self setupCamera];
}

-(void)animation1
{
    if (upOrdown == NO) {
        num ++;
        _line.frame = CGRectMake(CGRectGetMinX(_line.frame), 110+2*num, CGRectGetWidth(_line.frame), CGRectGetHeight(_line.frame));
        if (2 * num == CGRectGetHeight(imageView.frame) - 20) {
            upOrdown = YES;
        }
    }
    else {
        num --;
        _line.frame = CGRectMake(CGRectGetMinX(_line.frame), 110+2*num, CGRectGetWidth(_line.frame), CGRectGetHeight(_line.frame));
        if (num == 0) {
            upOrdown = NO;
        }
    }
    
}

- (BOOL)navigationShouldPopOnBackButton
{
    [timer invalidate];
    return YES;
}

-(void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
    
    if (hasCameraRight) {
        if (_session && ![_session isRunning]) {
            [_session startRunning];
        }
        timer = [NSTimer scheduledTimerWithTimeInterval:.02 target:self selector:@selector(animation1) userInfo:nil repeats:YES];
    }
}

- (void)viewWillDisappear:(BOOL)animated
{
    [super viewWillDisappear:animated];
    [timer invalidate];
}

- (void)setupCamera
{
    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
        // 耗时的操作
        // Device
        self->_device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
        
        // Input
        self->_input = [AVCaptureDeviceInput deviceInputWithDevice:self.device error:nil];
        
        // Output
        self->_output = [[AVCaptureMetadataOutput alloc]init];
        //    [_output setMetadataObjectsDelegate:self queue:dispatch_get_main_queue()];
        [self->_output setMetadataObjectsDelegate:self queue:dispatch_get_main_queue()];
        
        // Session
        self->_session = [[AVCaptureSession alloc]init];
        [self->_session setSessionPreset:AVCaptureSessionPresetHigh];
        if ([self->_session canAddInput:self.input])
        {
            [self->_session addInput:self.input];
        }
        
        if ([self->_session canAddOutput:self.output])
        {
            [self->_session addOutput:self.output];
        }
        
        // 条码类型 AVMetadataObjectTypeQRCode
        self->_output.metadataObjectTypes =@[AVMetadataObjectTypeQRCode];
        dispatch_async(dispatch_get_main_queue(), ^{
            // 更新界面
            // Preview
            self->_preview =[AVCaptureVideoPreviewLayer layerWithSession:self.session];
            self->_preview.videoGravity = AVLayerVideoGravityResizeAspectFill;
            //    _preview.frame =CGRectMake(20,110,280,280);
            self->_preview.frame = self.view.bounds;
            [self.view.layer insertSublayer:self.preview atIndex:0];
            // Start
            [self->_session startRunning];
        });
    });
}

#pragma mark AVCaptureMetadataOutputObjectsDelegate
- (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputMetadataObjects:(NSArray *)metadataObjects fromConnection:(AVCaptureConnection *)connection
{
    
    NSString *stringValue;
    
    if ([metadataObjects count] >0)
    {
        AVMetadataMachineReadableCodeObject * metadataObject = [metadataObjects objectAtIndex:0];
        stringValue = metadataObject.stringValue;
        
        [_session stopRunning];
        [timer invalidate];
        NSLog(@"扫码结果===%@",stringValue);
        _scanResult(stringValue);
        popViewController(self, YES);
        
    }
}

-(NSString *)getParamValueByKey:(NSString *)key Params:(NSArray *)params{
    __block NSString *value;
    [params enumerateObjectsUsingBlock:^(id  _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
        NSString *string = obj;
        if ([string containsString:key]) {
            value = [string substringFromIndex:[key length]];
        }
    }];
    
    return value;
}

附件： 扫一扫.zip (719.43 KB, 下载次数: 0)

2019-1-15 11:50 上传

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站长苏飞

我只是路过打酱油的。

范范

我只是路过打酱油的。

Amy

强烈支持楼主ing……

liu

强烈支持楼主ing……

惜

我只是路过打酱油的。