有没有办法调整iOS设备上的手电筒/闪光灯亮度？

Question

我已经阅读了很多关于调整屏幕亮度的主题,但是可以对闪存进行相同的操作,还是二进制打开/关闭？

Answer 1

在IOS 6+中,你可以.

[myAVCaptureDevice setTorchModeOnWithLevel:0.5 error:NULL]; <== range is (0,1.0] (don't send 0)

您可以枚举av捕获设备,如下所示:

NSArray * devices = [AVCaptureDevice devices];

并确定哪些有火把(即没有麦克风:):

myAVCaptureDevice.hasTorch

http://developer.apple.com/library/ios/#documentation/AVFoundation/Reference/AVCaptureDevice_Class/Reference/Reference.html