FLUTTER ECOSYSTEM

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

conditional_builder_null_safety 项目封面
Stars
2
Forks
0
最近推送(UTC)
2021年9月18日
项目状态
未归档
Hamada Mohammed Seif GitHub avatar
GITHUB User

Hamada Mohammed Seif ↗

I was an android developer and currently, I am a flutter developer

egypt-el-fayoum
语言Dart

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.