这是我试图循环通过的字符串,所以我尝试将其转换为JSON。
{to_address_mobile: [The to address mobile field is required.], to_address_area_number_id: [The to address area number id field is required.]}
下面是我尝试这样做的方法:
for (var validationError in json.decode('[${resp['data']}]')){
print(valida
我是第一次接触flutter。我需要在字符串中突出显示关键字,通常使用replace方法可以实现,但在flutter中似乎很难实现。 这是我正在尝试的代码。 Widget getString() {
List<TextSpan> lsTextSpan = [];
String str = 'This is new year and I have new bicycle.';
List<String> lskeywords = ['new year', 'bicycle'];
//her
如何在Flutter/Dart中删除字符串中的不可打印字符。 var c ="Maintain central project files (hard copy and electronic) for administration.â¢Perform a wide variety of administrative duties" 谢谢你的帮忙
如何从flutter中的描述字段中提取电话和电子邮件信息
下面是一个示例文本
Good to know you!<br/><br/> <br/>Apply online today!
If you have any questions please contact fname@lname@company.com<br/>theUser will reach out if we believe you would be a good fit.<br/><br/>
<br>111-222-3333<
在我的例子中,当我使用ExpansionPanelList时,我需要检查面板内的小部件是否可见。 如果不可见,tester.tap(find.text('More Info'))将抛出异常: Warning: A call to tap() with finder "exactly one widget with text "More Info" (ignoring offstage widgets): Text("More Info", dependencies: [MediaQuery, DefaultTextStyle])"
最近我一直在更新个人资料。下面是一个场景,HomePage => => Profile => HomePage。当我回来的时候,这就是我得到的错误。
⡿flutter: ══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
flutter: The following assertion was thrown building BlocListener<HomeBloc, HomeState>(dirty, state
我尝试在SingleChildScrollView中使用ReorderableListView,但收到一个错误:
I/flutter ( 9049): ══╡ EXCEPTION CAUGHT BY RENDERING LIBRARY ╞═════════════════════════════════════════════════════════
I/flutter ( 9049): The following assertion was thrown during performLayout():
I/flutter ( 9049): BoxConstraints forces an i
根据此实现颤振的Firebase
在“使用AnimatedList”步骤之后,我遇到了一个错误。一切似乎都符合教程- Firebase数据库插件中的版本差异是否会导致这种情况?
代码:
new Flexible(
child: new FirebaseAnimatedList(
query: reference,
sort: (a, b) => b.key.compareTo(a.key),
padding: new EdgeInsets
我是一个飞镖鸟,想做一个键盘上有符号和象形文字的键盘,所以这是我的尝试!但是当我使用backspace时,它会抓狂:项目是在github:错误上的开源的:
For more information see https://dart.dev/null-safety/unsound-null-safety
I/flutter ( 4728): ══╡ EXCEPTION CAUGHT BY RENDERING LIBRARY ╞═════════════════════════════════════════════════════════
I/flutter ( 4728): The follo