在代码中检测LED闪烁的警报设置状态

Question

如何在代码中检测“LED闪烁警报”（来自“设置”）状态？我试过了：

AVCaptureDevice *torched=[AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];   

BOOL test = torched.torchMode;
BOOL test1 = torched.flashMode;

但它认为这不是我需要的。

Answer 1

这样做，

BOOL test=NO;
BOOL test1=NO;

Class captureDeviceClass = NSClassFromString(@"AVCaptureDevice");
if (captureDeviceClass != nil) {
    AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
    if ([device hasTorch] && [device hasFlash]){
       if(device.flashMode==AVCaptureFlashModeOn)
          NSLog(@"ON");
       else
          NSLog(@"OFF");
    }
}

希望它会帮助你......