无法使用showBluetoothAccessoryPickerWithNameFilter获取附件列表

Question

I am developing an iOS application which using external accessory framework to communicate with hardware device.

Problem :

[[EAAccessoryManager sharedAccessoryManager]showBluetoothAccessoryPickerWithNameFilter:nil
                                                                             completion:nil];

Above method always return empty list. I have seen a lot links and questions but didn't find any solution.

Supported external accessory protocols is already added to info.plist

Could any one have idea about it? It would be appreciate.

Answer 1

I know this is old, but for those who stumbled across, make sure to:

Add the protocols in your Info.plist

<key>UISupportedExternalAccessoryProtocols</key>
<array>
    <string>com.protocol.test</string>
    <string>com.apple.p1</string>
</array>

And enable "Background Modes" from "Your Project" > "Capabilities" > "Background Modes". Then check " External accessory communication ".