objective-c – CoreBluetooth – 在设备锁定时发现BLE外设

有人可以确认这一点或指向我更多的信息/文件吗？

更具体一点 – 当我的应用程序(中央)转换到后台和主屏幕时,它会继续按预期发现外围设备,但是当我按下“睡眠/唤醒”按钮从而锁定设备时,它会停止发现我的外围设备.该应用程序没有崩溃或任何事情……事实上,当我解锁设备(返回主屏幕)时,它恢复发现外围设备而无需将其恢复到前台.我也明白,BLE在后台不太频繁地被触发,但在我的情况下,我在锁定状态下观看它超过一个小时并且它从未触发发现,但是一旦我解锁它就恢复正常.

我正在寻找一种解决方案,当设备(作为中央运行)被锁定时,我也能够发现外围设备.

谢谢你的帮助！

-H

更新中…

发现了一篇有趣的帖子,我想分享：http://web.archiveorange.com/archive/v/lBeBkjSSTe5jAan6ufTX

特别是观察(Brian Fudge)很有意思……

• A scanning device that is locked does not report any iOS peripherals that are also locked.

• On some devices,like iPhone 5 and 5S,you only need to press the home button on the peripheral for the scanner to succeed and
  peripherals to be reported.

• On other devices,like iPad and iPod Touch,you have to press the home button and unlock the peripheral for the scanner to succeed and
  peripherals to be reported.

• A non-iOS device,such as an rMBP,can scan iOS peripherals that are in the background and locked.

• All iOS devices can scan hardware peripherals (such as a health tracker) while the iOS device is in the background and locked.