How to convert String to TimeOfDay in Flutter?
Try this TimeOfDay _startTime = TimeOfDay(hour:int.parse(s.split(“:”)[0]),minute: int.parse(s.split(“:”)[1])); This Worked for me..
dart
Error: The argument type ‘String?’ can’t be assigned to the parameter type ‘String’ because ‘String?’ is nullable and ‘String’ isn’t [duplicate]
The error is caused by the null safety feature in Dart, see https://dart.dev/null-safety. The result of method stdin.readLineSync() is String?, i.e. it may be a String, or it may be null. The method int.parse() requires a (non-null) String. You should check that the user gave some input, then you can assert that the value is … Read more
How to access map keys through index? Dart
you can get it like this var element = dartques.values.elementAt(0); also for Dart 2.7+ you can write extension function extension GetByKeyIndex on Map { elementAt(int index) => this.values.elementAt(index); } var element = dartques.elementAt(1);
flutter open images from file path
The Image class has a file constructor for that https://api.flutter.dev/flutter/widgets/Image/Image.file.html Image.file(File(path))
How to solve “A RenderFlex overflowed by 143 pixels on the right.” error in text?
Just Wrap you – Card with –Flexible Widget. Row( children: <Widget>[ Flexible( child: Card( child: Column( crossAxisAlignment: CrossAxisAlignment.start, children: <Widget>[ Text(“Item name mmmasdaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaammmmmm”), SizedBox(height: 15.0,), Text( “Discount mmmmmmmm”, ), SizedBox(height: 5.0,), Text( “Price ,mmmmmmmmmdgfdgfdgfdgfdgfdgfdgfdgfdgfdgfdgfdgfdgfdgfdgfdgfdgfdgfdgfdgfdgfdgfdgfdgfdgfdgfdgfdgfdgfdgfdgfdgfdgfdgfdgfdgfdgfmmmmmmmmm”, ) ], ), ), ), ], ),
How to save an image to the photo gallery using Flutter?
https://pub.dev/packages/gallery_saver this plugin saves images and video to gallery/photos. You just need to provide it with path to temp file that you got from Camera(or even network url, it also works): GallerySaver.saveVideo(recordedVideo.path); GallerySaver.saveImage(recordedImage.path); **** DEPRICATED use something else.
Flutter NotificationListener with ScrollNotification vs ScrollController
If you’re using NestedScrollView with nested scrollers, using a scrollController on the inner scrollers will break the link with NestedScrollView meaning NestedScrollView will no longer control the complete scrolling experience. To get information about the scroll positions of the inner scrollers in this case you would use a NotificationListener with ScrollNotification. NotificationListener<ScrollNotification>( child: ListView.builder( itemCount: … Read more
How create a comma-separated string from items in a list
This is how I do it using join() in List: main(List<String> arguments) { List cities = [‘NY’, ‘LA’, ‘Tokyo’]; String s = cities.join(‘, ‘); print(s); }
Dart : How to Check if a variable type is String
Instead of if(T is String) it should be if(_val is String) The is operator is used as a type-guard at run-time which operates on identifiers (variables). In these cases, compilers, for the most part, will tell you something along the lines of T refers to a type but is being used as a value. Note … Read more
Multi-lines string in Dart
I’m not sure if I follow you here — do you want this? var symbole = “”” *<br /> ***<br /> *****<br /> *******<br /> *********<br />”””; var element03 = query(‘#exercice03’); element03.innerHTML = symbole; I just added the break lines So as Matt B said, the output of print() is differently formatted than HTML on … Read more