#pragma -mark- 打开手电筒
-(void)openFlashlight
{
    AVCaptureDevice * device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
    if (device.torchMode == AVCaptureTorchModeOff) {
        [device lockForConfiguration:nil];
        [device setTorchMode:AVCaptureTorchModeOn];
        [device unlockForConfiguration];
    }
}

#pragma mark 关闭手电筒
-(void)closeFlashlight {
    AVCaptureDevice * device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
    if (device.torchMode == AVCaptureTorchModeOn) {
    [device lockForConfiguration:nil];
    [device setTorchMode: AVCaptureTorchModeOff];
    [device unlockForConfiguration];
    }
}

#pragma -mark 声音
-(void)getVoice{
    
    //添加提示音
    SystemSoundID messageSound;
    NSString *path = [[NSBundle mainBundle] pathForResource:@"caremaCut" ofType:@"wav"];
    AudioServicesCreateSystemSoundID((__bridge CFURLRef)[NSURL fileURLWithPath:path],&messageSound);
    AudioServicesPlaySystemSound (messageSound);
}