Flash is Not Working in iPhone 6S with iOS 11.2.2

Question

When I'm running the app in iPhone 6S with iOS 11.2.2. The Flash is not working. Toggle button is working fine ie, On/Off. But, Flash is not coming when the toggle is On.

- (void)toggleFlash{
        NSArray *devices = [AVCaptureDevice devices];
        for (AVCaptureDevice *device in devices){
            if (device.flashAvailable) {
                if (flashOn){
                    [device lockForConfiguration:nil];
                    [device isTorchModeSupported:AVCaptureTorchModeOn];
                    [device unlockForConfiguration];
                }
                else{
                    [device lockForConfiguration:nil];
                    [device isTorchModeSupported:AVCaptureTorchModeOff];
                    [device unlockForConfiguration];
                }
            }
        }
    }

Done with the debugging.. It's working fine. But, Issue with Flash. Anyone Working on this issue. Please help me out?

Answer 1

Your code only checks whether torch mode is available ( isTorchModeSupported ) but never turns on the torch. You can use setTorchModeOn for that,