trackoffical_app/lib/widget/app_net_image.dart

import 'dart:typed_data';
import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:trackoffical_app/service/image.dart';
import 'image_loading.dart';
import '../model/m_net_image.dart';

class AppNetImage extends StatelessWidget{
  final MNetImage netImage;
  final memory = Uint8List(0).obs;
  final progress = 0.0.obs;
  final BoxFit? fit;
  final VoidCallback? onWidgetOk;

  AppNetImage({
    super.key,
    required this.netImage,
    this.fit,
    this.onWidgetOk
  }){
    netImage.loadMemory(
      onReceiveProgress: (c, a){
        if(a > 0){
          progress.value = c.toDouble() / a;
        }
      }
    ).then((value) {
      if(value.isNotEmpty){
        memory.value = value;
      }
    });
  }


  @override
  Widget build(BuildContext context) {


    return Obx((){
      if (memory.value.isEmpty){
        return ImageLoading(value: progress.value);
      }else{
        return _Image(memory.value, fit, onWidgetOk);
        // return Image.memory(memory.value, fit: fit);
      }
    });
  }
}

class _Image extends StatelessWidget{
  const _Image(this.memory, this.fit, this.onWidgetOk);
  final BoxFit? fit;
  final VoidCallback? onWidgetOk;
  final Uint8List memory;

  @override
  Widget build(BuildContext context) {
    final onWidgetOk = this.onWidgetOk;
    if(onWidgetOk!= null){
      WidgetsBinding.instance.addPostFrameCallback((mag) {
        onWidgetOk();
      });
    }

    onWidgetOk?.call();
    return Image.memory(memory, fit: fit);
  }
}