Use proximity sensor without turning the screen off

Question

这是一个很长的镜头，但是有没有人知道在使用接近传感器（UIDevice.proximityMonitoringEnabled和proximityState）时避免自动屏幕消隐的方法？

Answer 1

UIDevice only allows you to monitor the proximity sensor state and handle it within your app. You cannot control the blackening of the screen.

Answer 2

You can use this trick to temporary disable screen turn off

 UIDevice *device = [UIDevice currentDevice];
 [device setProximityMonitoringEnabled:YES];

But current public API do not allow to use proximity sensor without blacking out the screen. Any one have solution for this?