android - How do I control the brightness of the backlight in android immediately?

Question

I'm working on an app that needs to turn on and turn off the backlight of the screen fast, very fast. Something like off for 10ms, and then on for +-1ms. I have tried to use this code with a handler and a runnable:

fieldScreenBrightness.setFloat(lp, brightness);
this.getWindow().setAttributes(lp);

It work's fine, but not fast enough. It takes like 2 seconds to change the brightness from 0 to 1. I know for sure there is a different way to do that because there are apps that makes the screen work as a strobe light.

Thanks :)

Answer 1

ストロボ ライト アプリは、画面の明るさを変更しません。彼らは色を変更し、通常は黒と白の背景を非常に素早く切り替えます。あなたの目的がストロボライトを作ることであるならば、あなたはそうすべきです。