Android BLE智能手环

Question

有谁能告诉我如何在我的Android应用程序中从smartband获取数据？ 从onServicesDiscovered我不知道该怎么做......

@Override
public void onServicesDiscovered(BluetoothGatt gatt, int status) {
    super.onServicesDiscovered(gatt, status);
    if (status == BluetoothGatt.GATT_SUCCESS) {
        for (BluetoothGattService service : gatt.getServices()) {
            Log.w("Service", service.getUuid().toString());
            for (BluetoothGattCharacteristic characteristic : gatt.getService(service.getUuid()).getCharacteristics()) {
                    Log.e("Characteristic", characteristic.getUuid().toString());
            }
        }
    }
}