objective-c - AVCaptureDevice isFlashModeSupported 已弃用 iOS 10

Question

我正在使用 AVCaptureDevice 的实例方法“isFlashModeSupported”，如下所示:

NSArray *captureDeviceType = @[AVCaptureDeviceTypeBuiltInWideAngleCamera,AVCaptureDeviceTypeBuiltInMicrophone];
AVCaptureDeviceDiscoverySession *captureDevice = [AVCaptureDeviceDiscoverySession discoverySessionWithDeviceTypes:captureDeviceType mediaType:AVMediaTypeVideo position:AVCaptureDevicePositionUnspecified];

NSArray *deviceList = [captureDevice devices];
AVCaptureDevice *selectedCamera = [deviceList objectAtIndex:(NSUInteger)currentCameraDeviceIndex];

if ( [selectedCamera isFlashModeSupported:AVCaptureFlashModeAuto] ){
        [selectedCamera setFlashMode:AVCaptureFlashModeAuto];   // AVCaptureFlashModeAuto
    }

但在 iOS 10 中，isFlashModeSupported 和 setFlashMode 方法已弃用。

Xcode 建议改用 AVCapturePhotoOutput 的 -supportedFlashModes。

知道如何使用上述方法吗？

提前致谢

Answer 1

使用此代码。这非常有效。

AVCaptureSession *session = [[AVCaptureSession alloc] init];
[session setSessionPreset:AVCaptureSessionPresetPhoto];


AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
AVCaptureDeviceInput *deviceInput = [AVCaptureDeviceInput deviceInputWithDevice:device error:&error];
if ([device hasFlash]) {
   [device lockForConfiguration:nil];
   device.flashMode = AVCaptureFlashModeAuto;
   [device unlockForConfiguration];
}