我正在做一个应用程序。在那我想捕捉现场照片并将其展示给用户进行检查。我使用以下代码捕获了实时照片。捕获实时照片后，我得到了输出 url，现在我想在其中显示该实时照片PHLivePhotoView，我们如何使用输出 url 来做到这一点。而且我还获得了实时照片数据，请参阅下面的委托方法。
- (void)viewDidLoad {
[super viewDidLoad];
//Capture Session
AVCaptureSession *session = [[AVCaptureSession alloc]init];
session.sessionPreset = AVCaptureSessionPresetPhoto;
//Add device
AVCaptureDevice *device =
[AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
//Input
AVCaptureDeviceInput *input = [AVCaptureDeviceInput deviceInputWithDevice:device error:nil];
if (!input)
{
NSLog(@"No Input");
}
[session addInput:input];
//Output
// AVCaptureVideoDataOutput *output = [[AVCaptureVideoDataOutput alloc] init];
// [session addOutput:output];
// output.videoSettings =
// @{ (NSString *)kCVPixelBufferPixelFormatTypeKey : @(kCVPixelFormatType_32BGRA) };
AVCapturePhotoOutput *output =[[AVCapturePhotoOutput alloc]init];
[session addOutput:output];
output.livePhotoCaptureEnabled = true;
output.highResolutionCaptureEnabled = YES;
//Preview Layer
previewLayer = [[AVCaptureVideoPreviewLayer alloc] initWithSession:session];
UIView *myView = self.previewView;
previewLayer.frame = myView.bounds;
previewLayer.videoGravity = AVLayerVideoGravityResizeAspectFill;
[self.previewView.layer addSublayer:previewLayer];
//Start capture session
[session startRunning];
[session commitConfiguration];
captureOutput = [[AVCapturePhotoOutput alloc]init];
captureOutput = output;
// Do any additional setup after loading the view, typically from a nib.
}
- (IBAction)captureImage:(id)sender
{
AVCapturePhotoSettings * settings = [AVCapturePhotoSettings photoSettings];
settings.highResolutionPhotoEnabled = YES;
settings.flashMode = AVCaptureFlashModeOn;
NSString *livePhotoMovieFileName = [NSUUID UUID].UUIDString;
NSString *livePhotoMovieFilePath = [NSTemporaryDirectory() stringByAppendingPathComponent:[livePhotoMovieFileName stringByAppendingPathExtension:@"mov"]];
settings.livePhotoMovieFileURL = [NSURL fileURLWithPath:livePhotoMovieFilePath];
[captureOutput capturePhotoWithSettings:settings delegate:self];
}
- (void)captureOutput:(AVCapturePhotoOutput *)captureOutput didFinishProcessingLivePhotoToMovieFileAtURL:(NSURL *)outputFileURL duration:(CMTime)duration photoDisplayTime:(CMTime)photoDisplayTime resolvedSettings:(AVCaptureResolvedPhotoSettings *)resolvedSettings error:(nullable NSError *)error
{
NSLog(@"%@",outputFileURL);
}
- (void)captureOutput:(AVCapturePhotoOutput *)captureOutput didFinishProcessingPhotoSampleBuffer:(nullable CMSampleBufferRef)photoSampleBuffer previewPhotoSampleBuffer:(nullable CMSampleBufferRef)previewPhotoSampleBuffer resolvedSettings:(AVCaptureResolvedPhotoSettings *)resolvedSettings bracketSettings:(nullable AVCaptureBracketedStillImageSettings *)bracketSettings error:(nullable NSError *)error
{
photoData = [AVCapturePhotoOutput JPEGPhotoDataRepresentationForJPEGSampleBuffer:photoSampleBuffer previewPhotoSampleBuffer:previewPhotoSampleBuffer];
NSLog(@"%@",photoData);
}