How to fix Android BLE SCAN_FAILED_APPLICATION_REGISTRATION_FAILED error?

Question

Most of times it works great but sometimes i\'m having this error while trying to discover BLE devices:

02-12 18:00:41.952  16178-16339/com.icrealtime.allie W/Bl         


        

Answer 1

A possible workaround it might be to disable/enable the blueetooth programmatically. When you got the error SCAN_FAILED_APPLICATION_REGISTRATION_FAILED you should disable the BluetoothAdapter:

BluetoothAdapter.getDefaultAdapter().disable();

Disabling BluetoothAdapter, the event STATE_TURNING_OFF is fired. Once this event is fired, try to reconnect to the BluetoothAdapter:

case BluetoothAdapter.STATE_OFF:
  Log.d(TAG, "bluetooth adapter turned off");
  handler.postDelayed(new Runnable() {
    @Override
    public void run() {
        Log.d(TAG, "bluetooth adapter try to enable");
        BluetoothAdapter.getDefaultAdapter().enable();
    }}, 500);
  break;