How to control the flash light(iOS platform)

发布时间：2020-12-15 17:32:45 所属栏目：百科来源：网络整理

导读：static int i = 0;- (IBAction)longAction:(UIDoubleTapRecogenizer *)sender { AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo]; if (i % 2 == 0) { if ([device hasTorch]) { [device lockForConfiguration:nil

static int i = 0;
- (IBAction)longAction:(UIDoubleTapRecogenizer *)sender {
    AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
    if (i % 2 == 0)
    {
        if ([device hasTorch])
        {
            
            [device lockForConfiguration:nil];
            
            [device setTorchMode: AVCaptureTorchModeOn];
            
            [device unlockForConfiguration];
        }

    }
    else
    {
        if ([device hasTorch])
        {
            [device lockForConfiguration:nil];
            
            [device setTorchMode: AVCaptureTorchModeOff];
            
            [device unlockForConfiguration];
            
        }

    }
    i++;
    
}

Thesedays,I need to add a function to my iOS project. I need to add a function that we users double tap the screen,the flash light will be lighten up. How to complete it?

The source code can be found as follows:

（编辑：李大同）

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