iOS 7自动亮度正在推翻应用程序屏幕亮度设置

问题描述

我有一个iOS 7应用程序，我想让屏幕更暗。我正在使用以下行调整屏幕亮度：

I have an iOS 7 app where I want to make the screen darker. I am adjusting the screen brightness using the following line:

[UIScreen mainScreen].brightness = 0.3;

这会像我预期的那样使屏幕变暗，但如果用户启用了自动亮度，屏幕有时会返回到原来的设置。有没有办法在我的应用程序中禁用自动亮度，或者我是否需要订阅UIScreenBrightnessDidChangeNotification通知并在每次引发时重置亮度？

This dims the screen as I expect, but if a user has auto brightness enabled the screen sometimes goes back to its original setting. Is there a way to disable auto brightness while in my app, or do I need to subscribe to the UIScreenBrightnessDidChangeNotification notification and just reset the brightness each time it is raised?

推荐答案

您根本无法禁用自动亮度，因此您必须订阅通知。阅读有关UIScreen中可用方法的更多信息：

You cannot disable the auto brightness at all, so you will have to subscribe to the notification. Read more about available methods in UIScreen:

这篇关于iOS 7自动亮度正在推翻应用程序屏幕亮度设置的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！