RE: Bluetooth Pairing with NrfUART in android

Aleksander Nowakowski — Tue, 23 Jan 2018 11:37:01 GMT

Hi,

So there are two things:

I would recommend you to base your project on BLE library, which handles or common patterns and problems. You'll find if here: github.com/.../Android-Ble-library In the Readme you'll find links to two projects that use this lib: very simple nRF Blinky and more complex nRF Toolbox.
But still even when you'll use this lib the system popup to enter pin will be shown. The reason is that the broadcast that you want to receive (BluetoothDevice.ACTION_PAIRING_REQUEST) is sent by the system whenever a device wants to pair with pin. Every registered app may respond to it. Yours will provide the pin, but the system Bluetooth app will display a popup. Unfortunately you can't do anything about it, in my opinion, I wish I was mistaken.

After you provide the pin with setPin(..) the device will bond and you should get ACTION_BOND_STATE_CHANGED broadcast with State bonded. You'll not get any connected event. When you'll use the BLE library, you'll get onBonded (or similar) in the Callbacks.

Hope that helped, Aleksander