Flash无法在具有iOS 11.2.2的iPhone 6S中运行

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,