我也遇到过同样的问题。我发现我在我的容器中使用key: UniqueKey()。在每个setState上，它都会生成...
在Flutter中,setState函数用于更新UI状态。然而,由于Dart语言的特性,无法直接在setState函数中更改文本值。为了实现这一目标,可以使用StatefulWidget和State类...
If you create the field using a TextField or a TextFormField, there is an argument named keyboardType. To use the argument, you have to pass a TextInputType value. The TextInputType has some static constants that you can use to get an instance of it. The constants are: text multiline...
今天在写一个音乐播放器，遇到一个问题就是在播放界面开始播放后，返回其他界面，就一直报setState() ...
同时将c.addListener移动到小部件的initState函数中。这样，TextEditingController只创建一次，监听器只添加...
Flutter makes it easy and fast to build beautiful apps for mobile and beyond - iOS Keyboard flickers when switching the TextFields which have obscureText set to true · flutter/flutter@73546b3
void _getClipboard() async { ClipboardData data = await Clipboard.getData(Clipboard.kTextPlain); setState(() { _textValue = data.text; }); } Full Code If you want to try how to set and get data from the system clipboard, you can use the full code below. import 'package:flutter/mat...
returnPlatformSlider( onChanged:(boolvalue) {}, value:value, material:(_, __)=>MaterialSliderData(...), cupertino:(_, __)=>CupertinoSliderData(...) ); PlatformTextField A text field widget that will use aTextFieldfor material or aCupertinoTextFieldfor cupertino. ...
1、set源码public voidset(T value) {Thread t = Thread.currentThread();//获取当前线程ThreadLocalMap map = getMap(t);//获取ThreadLocalMap 对象if (map != null)//判断对象是否为空map.set(this, value);//map不为null,设置值elsecreate
requestFocus(FocusNode()); setState(() { sortOrderByValue = newValue; }); }, items: <String>[ "date", "id", "title", "slug", "include" ].map<DropdownMenuItem<String>>((String value) { return DropdownMenuItem<String>( value: value, child: Text( value.titleCase, textAlign: ...