iOS 闪光灯的开启和关闭

最新推荐文章于 2020-05-12 13:48:53 发布

原创最新推荐文章于 2020-05-12 13:48:53 发布 · 1k 阅读

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这篇博客介绍了如何在iOS应用中实现快速开启和关闭设备的闪光灯功能，提供了相关的代码示例。

直接上代码

#pragma mark - 控制闪光灯
- (IBAction)TorchAction:(id)sender {


        AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
        if ([device hasTorch] && [device hasFlash]){

            [device lockForConfiguration:nil];
            if (!torchIsOn) {
                [device setTorchMode:AVCaptureTorchModeOn];
                [device setFlashMode:AVCaptureFlashModeOn];
                torchIsOn = YES;

                flashButton.selected = YES;

            } else {
                [device setTorchMode:AVCaptureTorchModeOff];
                [device setFlashMode:AVCaptureFlashModeOff];
                torchIsOn = NO;

                flashButton.selected = NO;
            } 
            [device unlockForConfiguration]; 
        } 


}