What are the steps to get notified by Bluetooth Low Energy (BLE) device?

Question

I am working on a Bluetooth Low Energy (BLE) app. I have a BLE device (scale) which measures weight. I am able to connect with this device. But I am not getting how to read data

Answer 1

Refer the source code of sample application "bluetoothlegatt" provided on developer portal.

Sample service: http://developer.android.com/samples/BluetoothLeGatt/src/com.example.android.bluetoothlegatt/BluetoothLeService.html

Using service: http://developer.android.com/samples/BluetoothLeGatt/src/com.example.android.bluetoothlegatt/DeviceControlActivity.html

This example contains characteristics with read and notify properties. So you definitely find your solution. Please go to section with following code:(You may figure it out)

public void readCharacteristic(BluetoothGattCharacteristic characteristic) {
        if (mBluetoothAdapter == null || mBluetoothGatt == null) {
            Log.w(TAG, "BluetoothAdapter not initialized");
            return;
        }
        mBluetoothGatt.readCharacteristic(characteristic);
    }