Social Media Button

  Widget _buildSocialBtn(Function onTap, AssetImage logo) {
    return GestureDetector(
      onTap: onTap,
      child: Container(
        height: 60.0,
        width: 60.0,
        decoration: BoxDecoration(
          shape: BoxShape.circle,
          color: Colors.white,
          boxShadow: [
            BoxShadow(
              color: Colors.black26,
              offset: Offset(0, 2),
              blurRadius: 6.0,
            ),
          ],
          image: DecorationImage(
            image: logo,
          ),
        ),
      ),
    );
  }

  Widget _buildSocialBtnRow() {
    return Padding(
      padding: EdgeInsets.symmetric(vertical: 10.0),
      child: Row(
        mainAxisAlignment: MainAxisAlignment.spaceEvenly,
        children: <Widget>[
          _buildSocialBtn(
            () => print('Login with Facebook'),
            AssetImage(
              'assets/logos/facebook.jpg',
            ),
          ),
          _buildSocialBtn(
            () => print('Login with Google'),
            AssetImage(
              'assets/logos/google.jpg',
            ),
          ),
        ],
      ),
    );
  }