Kingkor Roy Tirtho
41 lines
1.2 KiB
Dart
41 lines
1.2 KiB
Dart
import 'dart:math';
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import 'package:fl_query/fl_query.dart';
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import 'package:flutter/material.dart';
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final jobWithExternalData = QueryJob<String, String>(
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queryKey: "external_data",
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cacheTime: const Duration(seconds: 10),
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task: (queryKey, data) {
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return Future.delayed(const Duration(milliseconds: 500),
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() => "Hello from $queryKey with $data");
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});
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class QueryWithExternalData extends StatelessWidget {
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const QueryWithExternalData({Key? key}) : super(key: key);
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(),
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body: QueryBuilder<String, String>(
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job: jobWithExternalData,
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externalData: (Random().nextDouble() * 200).toString(),
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builder: (context, query) {
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if (query.isLoading || query.isLoading || query.data == null) {
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return const CircularProgressIndicator();
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}
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return Container(
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width: double.parse(query.externalData),
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height: double.parse(query.externalData),
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decoration: const BoxDecoration(
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shape: BoxShape.circle,
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color: Colors.blue,
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),
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);
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},
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),
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);
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}
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}
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