我在底部工作表中有一个Listview..像这样:showModalBottomSheet(context:context,builder:(BuildContextcontext){returnDirectionality(textDirection:globals.getDirection(),child:Container(margin:EdgeInsets.only(right:10.0,left:10.0),height:MediaQuery.of(context).size.height/2,child:Column(crossAxisAlignment:CrossAxis
我在底部工作表中有一个Listview..像这样:showModalBottomSheet(context:context,builder:(BuildContextcontext){returnDirectionality(textDirection:globals.getDirection(),child:Container(margin:EdgeInsets.only(right:10.0,left:10.0),height:MediaQuery.of(context).size.height/2,child:Column(crossAxisAlignment:CrossAxis
我有这个StreamController:StreamController_selectedWorkoutSubject=newStreamController()我像这样在StreamBuilder中收听它:StreamBuilder(stream:workoutBloc.selectedWorkoutStream,builder:(BuildContextcontext,AsyncSnapshotsnapshot){if(snapshot.hasData){return...}else{returnText('loading...');}});当我离开当前页面并返回时，出现异常:B
我有这个StreamController:StreamController_selectedWorkoutSubject=newStreamController()我像这样在StreamBuilder中收听它:StreamBuilder(stream:workoutBloc.selectedWorkoutStream,builder:(BuildContextcontext,AsyncSnapshotsnapshot){if(snapshot.hasData){return...}else{returnText('loading...');}});当我离开当前页面并返回时，出现异常:B
这是我在屏幕上看到的内容:https://i.imgur.com/oSblgWD.png如何对齐姓氏使其位于名字下方？我不想在姓氏旁边放置图标，只在名字旁边放置图标。这是我的代码。谢谢。body:Center(child:Form(key:_formKey,child:Column(children:[ListTile(leading:constIcon(Icons.person),title:newTextField(decoration:newInputDecoration(hintText:"Firstname",),),),ListTile(title:newTextField
这是我在屏幕上看到的内容:https://i.imgur.com/oSblgWD.png如何对齐姓氏使其位于名字下方？我不想在姓氏旁边放置图标，只在名字旁边放置图标。这是我的代码。谢谢。body:Center(child:Form(key:_formKey,child:Column(children:[ListTile(leading:constIcon(Icons.person),title:newTextField(decoration:newInputDecoration(hintText:"Firstname",),),),ListTile(title:newTextField
我在将HTTP响应正文转换为Flutter列表时遇到问题。在调试器中，jsonDecode(response.body)['data']['logsread']的输出看起来完全像[{"id":"9fd66092-1f7c-4e60-ab8f-5cf7e7a2dd3b","email":"email@gmail.com"}]但是，这会返回false。print((jsonDecode(response.body)['data']['logsread'])==[{"id":"9fd66092-1f7c-4e60-ab8f-5cf7e7a2dd3b","email":"email@gmail
我在将HTTP响应正文转换为Flutter列表时遇到问题。在调试器中，jsonDecode(response.body)['data']['logsread']的输出看起来完全像[{"id":"9fd66092-1f7c-4e60-ab8f-5cf7e7a2dd3b","email":"email@gmail.com"}]但是，这会返回false。print((jsonDecode(response.body)['data']['logsread'])==[{"id":"9fd66092-1f7c-4e60-ab8f-5cf7e7a2dd3b","email":"email@gmail
我想在dart中替换2个其他字符串之间的字符串，例如:varstr="test";周围的分隔符不会改变，永远不变。例如，如何用“test2”替换“test”？ 最佳答案 varstr="test";varreplace='foo';varcounter=0;finalresult=str.replaceAllMapped(RegExp(r'()'),(m){return'${m[1]}$replace${counter++}${m[3]}';});print(result); 关于Dar
我想在dart中替换2个其他字符串之间的字符串，例如:varstr="test";周围的分隔符不会改变，永远不变。例如，如何用“test2”替换“test”？ 最佳答案 varstr="test";varreplace='foo';varcounter=0;finalresult=str.replaceAllMapped(RegExp(r'()'),(m){return'${m[1]}$replace${counter++}${m[3]}';});print(result); 关于Dar
