1.ios17.0自定义相机使用的时候，左右晃动会引起拍照黑屏。
我们的App使用相机发现一些问题，就是自定义相机使用的还是旧的的输出方式，需要使用11.0以上输出照片方式就可以解决黑屏的问题。
旧的照片输出方式：
@property (nonatomic, strong) AVCaptureStillImageOutput *stillImageOutput;
通过苹果的文档都可以看到这个方法已经废弃了，我们需要新的输出照片方法替换。
10.0以下的手机系统就不再支持了。
//新的输出方式
@property (nonatomic, strong) AVCapturePhotoOutput *stillImageOutput;
@property (nonatomic, strong) AVCaptureSession *captureSession;
@property (nonatomic, strong) AVCaptureVideoPreviewLayer *previewLayer;
使用AVCapturePhotoOutput替换旧的照片输出方法（AVCaptureStillImageOutput）。
###### # 下面新的输出方式自定义相机
- (void)viewDidLoad {
[super viewDidLoad];
// 创建捕获会话
self.captureSession = [[AVCaptureSession alloc] init];
self.captureSession.sessionPreset = AVCaptureSessionPresetPhoto;
// 获取后置摄像头
AVCaptureDevice *backCamera = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
if (backCamera) {
NSError *error = nil;
AVCaptureDeviceInput *input = [AVCaptureDeviceInput deviceInputWithDevice:backCamera error:&error];
if (!error && [self.captureSession canAddInput:input]) {
[self.captureSession addInput:input];
self.stillImageOutput = [[AVCapturePhotoOutput alloc] init];
if ([self.captureSession canAddOutput:self.stillImageOutput]) {
[self.captureSession addOutput:self.stillImageOutput];
self.previewLayer = [AVCaptureVideoPreviewLayer layerWithSession:self.captureSession];
self.previewLayer.videoGravity = AVLayerVideoGravityResizeAspect;
self.previewLayer.connection.videoOrientation = AVCaptureVideoOrientationPortrait;
[self.view.layer addSublayer:self.previewLayer];
[self.captureSession startRunning];
}
} else {
NSLog(@"Error setting up camera input: %@", [error localizedDescription]);
}
}
}
- (void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
self.previewLayer.frame = self.view.bounds;
}
- (IBAction)capturePhoto:(UIButton *)sender {
AVCaptureVideoOrientation videoPreviewLayerVideoOrientation = _previewLayer.connection.videoOrientation;
AVCaptureConnection* photoOutputConnection = [self.photoOutput connectionWithMediaType:AVMediaTypeVideo];
photoOutputConnection.videoOrientation = videoPreviewLayerVideoOrientation;
AVCapturePhotoSettings *photoSettings = [AVCapturePhotoSettings photoSettings];
AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
photoSettings.flashMode = device.flashMode;
[self.photoOutput capturePhotoWithSettings:photoSettings delegate:self];
}
// 处理照片捕获完成后的回调（11.0手机系统回调方法）
- (void)captureOutput:(AVCapturePhotoOutput *)captureOutput didFinishProcessingPhotoSampleBuffer:(nullable CMSampleBufferRef)photoSampleBuffer previewPhotoSampleBuffer:(nullable CMSampleBufferRef)previewPhotoSampleBuffer resolvedSettings:(AVCaptureResolvedPhotoSettings *)resolvedSettings bracketSettings:(nullable AVCaptureBracketedStillImageSettings *)bracketSettings error:(nullable NSError *)error {
if (error) {
LogError(@"captureOutput capture still image error.%@",error);
} else if (photoSampleBuffer) {
NSData *imageData = [AVCapturePhotoOutput JPEGPhotoDataRepresentationForJPEGSampleBuffer:photoSampleBuffer previewPhotoSampleBuffer:previewPhotoSampleBuffer];
UIImage *image = [UIImage imageWithData:imageData];
}
}
// 处理照片捕获完成后的回调（11.0以上系统回调方法）
- (void)captureOutput:(AVCapturePhotoOutput *)output didFinishProcessingPhoto:(AVCapturePhoto *)photo error:(nullable NSError *)error {
if (photo.fileDataRepresentation) {
UIImage *image = [UIImage imageWithData:photo.fileDataRepresentation];
// 在此处处理捕获的图像，例如显示在界面上、保存到相册等
}
}
使用此方案可以解决iphone15以上手机自定义相机晃动黑屏的问题。
