firebaseImageLib.dart

library custom_image;

import 'package:firebase_storage/firebase_storage.dart';
import 'package:flutter/material.dart';
import 'package:flutter_svg/flutter_svg.dart';

class CustomImage extends StatelessWidget {
  final String assetPath;
  final double height, width, scale;
  final Color color;
  final BlendMode colorBlendMode;
  final bool isProviderImage;
  const CustomImage(this.assetPath,
      {Key key,
      this.scale = 1.0,
      this.height,
      this.width,
      this.color,
      this.colorBlendMode,
      this.isProviderImage = false})
      : super(key: key);

  @override
  Widget build(BuildContext context) {
    return new FutureBuilder(
      future: _loadImage(),
      builder: (BuildContext context, AsyncSnapshot<String> image) {
        if (image.hasData) {
          if (assetPath.toLowerCase().contains('.svg')) {
            return SvgPicture.network(
              image.data,
              height: height,
              width: width,
            );
          } else {
            return isProviderImage
                ? NetworkImage(
                    image.data,
                    scale: scale,
                  )
                : Image.network(image.data,
                    scale: scale,
                    height: height,
                    width: width,
                    color: color,
                    colorBlendMode: colorBlendMode); // image is ready
          }
        } else {
          return new Container(); // placeholder
        }
      },
    );
  }

  Future<String> _loadImage() async {
    final ref = FirebaseStorage.instance.ref().child('assets').child(assetPath);
    var url = await ref.getDownloadURL();
    return url;
  }
}