How to detect Square Reader Hardware is connected with iPad via Bluetooth?

Question

我正在使用Square Reader SDK开发iOS应用，如何检测Square Reader硬件是否与设备连接，以便在硬件未与设备连接的情况下显示Square Reader设置视图。

Answer 1

let readerSettingsController = SQRDReaderSettingsController(delegate: self)
readerSettingsController.present(from: self)

If you are done with other required process, Simply put above code to check status about card reader connection.