其实如果只是要让按钮不响应事件,有很多种方法:你可以用变量控制你的逻辑;可以设置 onPressed 为 null;可以用AbsorbPointer 禁用事件... 而在flutter中,button类型没有类似disable的属性,按钮不可点击时需要设置: onPressed:null 是不是第一次见这种判断方法
BackButton是一个material风格的返回按钮,本身是一个IconButton,点击时默认执行Navigator.maybePop即如果路由栈有上一页则返回到上一页。 BackButton(color: Colors.orange), 1. CloseButton CloseButton是一个material风格的关闭按钮,本身是一个IconButton,点击时默认执行Navigator.maybePop即如果路由栈有上一页则返回到...
有主题的button,官网不推荐使用此控件,推荐使用它的子类 FlatButton 扁平化的按钮,继承自MaterialButton OutlineButton 带边框的按钮,继承自MaterialButton IconButton 图标按钮,继承自StatelessWidget BackButton 一个Icon 是 返回键头的IconButton,点击会调用 Navigator.maybePop 返回上一个路由 , 默认长按提示是 back ,...
I am trying to make this button active and inactive but i am able to do this with my code which is this container which i have called with the GridView() once i tap to these container it is selected but when i scroll upward or downward after selecting to these container become unselecte...
Flutter是一种跨平台的移动应用开发框架,它可以帮助开发者使用单一代码库构建高性能、美观的移动应用程序。在动画运行时禁用所有单击事件是一种常见的需求,可以通过以下步骤实现: 导入所需的库: 导入所需的库: 创建一个状态变量来控制是否禁用单击事件: 创建一个状态变量来控制是否禁用单击事件: 在需要禁用单击事件...
Here is an example of buttons in an enable and a disable state.ElevatedButton( onPressed: () {}, child: Text('Click Me!'),),ElevatedButton( onPressed: null, child: Text('Click Me!'),),The first button contains onPressed callback, so Flutter shows it in an enabled state. Flutter ...
I have issue to disable the button in its own function when app start button is enable and _enable1=true when I click on it and it should be disable it self but its not working for me here is my code that i have tried if(_enable1) { resendbutoonfunction=() { print("hello");...
突起按钮组件(RaisedButton),往往我们在开发过程中,不会一直用系统的图标,那么如果一个按钮上需要我们添加自定义的文本,这样的按钮要怎么实现呢? import 'package:flutter/material.dart'; import 'package:fluttertoast/fluttertoast.dart'; void main() => runApp(DemoApp()); class DemoApp extends StatelessWidge...
const GradientButton({ Key? key, this.colors, this.width, this.height, this.borderRadius, required this.tapCallback, required this.child, this.disable = false, }) : super(key: key); final List<Color>? colors; // 渐变色数组 final double? width; // 按钮 宽 ...
本文介绍Flutter中常用按钮控件,包括:MaterialButton 、RaisedButton 、FlatButton 、IconButton 、FloatingActionButton 、OutlineButton...2、按钮类型已经含义不同的Button拥有不同的功能,正确使用对应的Button可以事半功...