Enabling Bluetooth characteristic Notification in Android (Bluetooth Low Energy ) Not Working

Question

If we call setCharacteristicNotification on a character, not giving Remote Notification on value Change? How to enable the remote Notification on a Central

Answer 1

To enable notification you should do as following.

mBluetoothLeService.setCharacteristicNotification(mSampleCharacteristic, true);

of which definition is as following.

if (enabled) {
            BluetoothGattDescriptor bluetoothGattDescriptor = characteristic.getDescriptor(UUID.fromString(SampleGattAttributes.CLIENT_CHARACTERISTIC_CONFIG));
            bluetoothGattDescriptor.setValue(BluetoothGattDescriptor.ENABLE_INDICATION_VALUE); 
            mBluetoothGatt.writeDescriptor(bluetoothGattDescriptor);
        } else {
            BluetoothGattDescriptor bluetoothGattDescriptor = characteristic.getDescriptor(UUID.fromString(SampleGattAttributes.CLIENT_CHARACTERISTIC_CONFIG));
            bluetoothGattDescriptor.setValue(BluetoothGattDescriptor.DISABLE_NOTIFICATION_VALUE); 
            mBluetoothGatt.writeDescriptor(bluetoothGattDescriptor);
        }

Still if remote notification does not work, try to read characteristics only after enabling notifications for the same.

Reading characteristics is as

mBluetoothLeService.readCharacteristic(eachChara);