showLoading method

void showLoading(dynamic context, [ String? text ])

Implementation

void showLoading(context, [String? text]) {
  text = text ?? "Loading...";
  showDialog(
      barrierDismissible: false,
      context: context,
      builder: (context) {
        return Center(
          child: Container(
            decoration: BoxDecoration(
                color: Colors.black,
                borderRadius: BorderRadius.circular(3.0),
                boxShadow: const [
                  //阴影
                  BoxShadow(
                    color: Color(0xFF4c4c4c),
                    //offset: Offset(2.0,2.0),
                    blurRadius: 10.0,
                  )
                ]),
            padding: const EdgeInsets.all(16),
            margin: const EdgeInsets.all(16),
            constraints: const BoxConstraints(minHeight: 120, minWidth: 180),
            child: Column(
              mainAxisSize: MainAxisSize.min,
              mainAxisAlignment: MainAxisAlignment.center,
              children: <Widget>[
                const SizedBox(
                  height: 30,
                  width: 30,
                  child: CircularProgressIndicator(
                    strokeWidth: 3,
                  ),
                ),
                Padding(
                  padding: const EdgeInsets.only(top: 20.0),
                  child: Text(
                    text!,
                    style: const TextStyle(
                        color: Colors.white,
                        fontSize: 14,
                        decoration: TextDecoration.none),
                  ),
                ),
              ],
            ),
          ),
        );
      });
}