ios闪光灯调用

引入

#import <AVFoundation/AVFoundation.h>

打开闪光灯

AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];

    if (![device hasTorch]) {//判断是否有闪光灯

        NSLog(@"no torch");

    }else{

        [device lockForConfiguration:nil];//锁定闪光灯

        [device setTorchMode: AVCaptureTorchModeOn];//打开闪光灯

        [device unlockForConfiguration];  //解除锁定

    }

关闭闪光灯

[device setTorchMode: AVCaptureTorchModeOff];

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