在UIImageView中的实时相机

时间:2013-01-15 12:13:31

标签: iphone ios xcode ios6

有人知道如何将实时相机输入到UIImageView吗?

我有一个自定义用户界面,我需要显示相机输入(前置摄像头),因此我无法使用UIImagePickerControl

1 个答案:

答案 0 :(得分:4)

您需要创建一个捕获会话,并开始运行。完成后,您可以将捕获会话中的图层添加到视图中:

- (void)setupCaptureSession
{
    NSError* error = nil;

    // Create the session
    _captureSession = [[AVCaptureSession alloc] init];    
    _captureSession.sessionPreset = AVCaptureSessionPresetMedium;
    AVCaptureDevice* device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];

    AVCaptureDeviceInput* input = [AVCaptureDeviceInput deviceInputWithDevice:device error:&error];

    [_captureSession addInput:input];
    AVCaptureVideoDataOutput* output = [[AVCaptureVideoDataOutput alloc] init];
    [_captureSession addOutput:output];

    // Configure your output.
   dispatch_queue_t queue = dispatch_queue_create("myCameraOutputQueue", NULL);
   //If you want to sebsequently use the data, then implement the delegate.
   [output setSampleBufferDelegate:self queue:queue]; 
}

完成后,您可以按如下方式创建预览图层:

_previewLayer = [AVCaptureVideoPreviewLayer layerWithSession:_captureSession];
[_captureSession startRunning];

然后将预览图层添加到视图中:

_myView.layer addSubLayer:_previewLayer];