在背景上扫描外围设备 [英] Scan peripheral on background

问题描述

我的BLE应用程序在后台运行并扫描外围设备，但委托方法centralManager:didDiscoverPeripheral:advertisementData:RSSI:没有回调.我已经在Info.plist中为UIBackgroundModes设置了值.为什么?该怎么解决?

My BLE app running on background and scanning peripheral but the delegate method centralManager:didDiscoverPeripheral:advertisementData:RSSI: not callback. I've setted the value in Info.plist for UIBackgroundModes. Why? How to solve it?

推荐答案

您无法在后台模式下扫描外围设备， 只需打开与外围设备的连接并保留对该外围设备的引用即可.

You cannot scan for peripherals in background mode, just open connection to peripherals and keep references to that peripherals.

之后您可以致电

[peripheral1 readRSSI];

并等待CBPeripheralDelegate回调

And wait for CBPeripheralDelegate callback

peripheralDidUpdateRSSI:

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