我认为这是一个相当大的安全问题，它释放了Android L.我总是在锁屏上有一个密码，只要我能记住，但在Android L中它变得几乎没用。
如果有人是偷电手机，即使手机锁定也可以轻松关闭任何无线连接 - 阻止我跟踪我的手机（我意识到他们可以关闭手机并使用Fastboot闪存新ROM到它上，但让我们假设他们不是那么聪明）。
I think that this is a rather large security issue that has come with the release of Android L. I've always had a password on my lock screen for as long as I can remember, but in Android L it becomes nearly useless.
After locking my device I noticed that I can still pull down the notification tray from my lock screen with which I could toggle Wi-Fi, bluetooth, and data.
If someone was to steal my phone, they could easily turn off any wireless connection even with the phone locked - preventing me from tracking my phone (I realize that they can just turn off the phone and use fastboot to flash a new ROM onto it, but let's assume they're not that smart).
Am I just missing some magically hidden setting to disable the notification tray in the lock screen?
No, you're not missing a setting. This particular decision seems very unfortunate, and a ticket opened with google to resolve this has already some support : Google code ticket. We can only hope that this will be reverted to the previous behaviour (allowed only when the lockscreen had no pin/password/gesture) or made into a setting.