打开IOS设备（iphone）的闪光灯代码,ObjC代码库,德仔网

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【ObjC】打开IOS设备（iphone）的闪光灯

作者:清源 / 发布于2014/11/4/ 754


	AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
	
	 if (device.torchMode == AVCaptureTorchModeOff)
	 {
	 // Create an AV session
	 AVCaptureSession *session = [[AVCaptureSession alloc] init];
	
	 // Create device input and add to current session
	 AVCaptureDeviceInput *input = [AVCaptureDeviceInput deviceInputWithDevice:device error: nil];
	 [session addInput:input];
	
	 // Create video output and add to current session
	 AVCaptureVideoDataOutput *output = [[AVCaptureVideoDataOutput alloc] init];
	 [session addOutput:output];
	
	 // Start session configuration
	 [session beginConfiguration];
	 [device lockForConfiguration:nil];
	
	 // Set torch to on
	 [device setTorchMode:AVCaptureTorchModeOn];
	
	 [device unlockForConfiguration];
	 [session commitConfiguration];
	
	 // Start the session
	 [session startRunning];
	
	 // Keep the session around
	 [self setAVSession:session];
	
	 [output release];
	 }
	 else
	 {
	 [AVSession stopRunning];
	 [AVSession release], AVSession = nil;
	 }

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　闪光灯　

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