hamada-develop/conditonal_builder_null_safety
此包的目的是根据条件类型显示 UI 元素,并支持空安全
- Stars
- 2
- Forks
- 0
- 最近推送(UTC)
- 2021年9月18日
- 项目状态
- 未归档
技术话题
使用的依赖
依赖清单 2 项
- flutter
{"sdk":"flutter"} - flutter_test开发依赖
{"sdk":"flutter"}
原始 README
以下为英文项目原文快照,最新内容请访问 GitHub。
展开 / 收起项目 README
conditional_builder_null_safety
This is package its purpose show UI elements according for conditional type and supports null safety
Getting Started
dependencies:
conditional_builder_null_safety: ^0.0.6
import this package
import 'package:conditional_builder_null_safety/conditional_builder_null_safety.dart';
Example
If the condition is true, will be builder executed
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
body: ConditionalBuilder(
condition: true,
builder: (context) => Center(child: Text('this is true')),
fallback: (context) => Center(child: Text('this is not true')),
),
),
);
}
https://raw.githubusercontent.com/hamada-develop/conditonal_builder_null_safety/HEAD/screenshot/Screenshot_2.jpg
If the condition is not true or false, will be fallback executed
@override
Widget build(BuildContext context) {
return Scaffold(
body: ConditionalBuilder(
condition: false,
builder: (context) => Center(child: Text('this is true')),
fallback: (context) => Center(child: Text('this is not true')),
),
);
}
https://raw.githubusercontent.com/hamada-develop/conditonal_builder_null_safety/HEAD/screenshot/Screenshot_3.jpg
you can set fallback is null don't worry it is return a empty container
@override
Widget build(BuildContext context) {
return Scaffold(
body: ConditionalBuilder(
condition: false,
builder: (context) => Center(child: Text('this is true')),
fallback: null,
),
);
}
https://github.com/HamadaAllipy/conditonal_builder_null_safety/blob/version_0.0.3/Screenshot_1.jpg
add a new function generateRandom(int min, int max); its return int , create random number between minimum and maximum
int random = generateRandom(10 , 100);
//output 99 or 47 or 11 or else number
This project is a starting point for a Dart package, a library module containing code that can be shared easily across multiple Flutter or Dart projects.
For help getting started with Flutter, view our online documentation, which offers tutorials, samples, guidance on mobile development, and a full API reference.