Recent questions tagged Dart

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dart - Flutter how do I remove unwanted padding from Text widget?

I have a Text widget and not sure why it seems to just have padding at the top and bottom even though I didn't ... padding, like a html H1 tag. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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dart - Send notification over device using FCM and Flutter

currently I am trying to send a notification to multiple device. I already read the documentation on how to send ... day. Thank you in advance! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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dart - How can I bind a text which contains url as html

How can I bind a text which contains url as html. Is it possible by using the following code ? @CustomTag('my ... "></script> </polymer-element> See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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dart - Creating a Sticky Site Footer

I have not been able to locate any documentation for creating footer nav bars with Flutter/Dart. I know that " ... be a better way though? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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dart - Why Flutter GlobalKey's currentState is NULL when accessed from other file

Here's my code: import 'package:flutter/material.dart'; void main() { runApp(new MyStatefulApp(key: App.appStateKey ... am not aware of. Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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dart - Circular progress button based on hold (flutter)

I'm trying to make a button where when user hold it, there will be a progress, but if the user unpress ... somthing like the one on the picture See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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dart - Why is map not working but foreach is?

This forEach works just fine var newMarkers = new List<Marker>(); providers.forEach((p) { var marker = markerFrom(p) ... ); }); return marker; } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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dart - Suppress hint about use of protected member

The meta package provides a @protected annotation (besides others) to get analyzer hints or warnings about the use ... I suppress such hints? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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dart - AssetImage is not displaying image in flutter app

image not displaying in flutter app. But I got some errors in debug console. I/FlutterActivityDelegate(22603): ... structure pubspec.yaml file See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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dart - Flutter: Right overflowed by 200 pixels

I'm testing Chips inside my Flutter App. I've added those chips inside Row. But when no. of Chips increases, app shows ... ], ), ), ); } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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dart - How to delete a field in Firestore document with flutter

I'm making a Flutter application. But, I cannot delete a field in the Firestore document. In another language I know ... Dart, How do I delete? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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dart - Flutter- compute method

I'm trying to execute heavy method by compute(). I tried like so. After loop executed, Text widget update but ... _counter = result; }); } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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dart - How to make HTTP request to In Flutter Web

I was trying my hands on flutter web. I tried to connect a simple flutter web app I created to mysql ... (responsBody); return responsBody; } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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dart - What is the difference between streamController.add() and streamController.sink.add()?

There are two ways that i know to add data to streamcontroller, one directly and other by use of a sink. I ... concept like piping of data etc. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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dart - Configuring AngularDart Modules

I'm trying to add an HttpInterceptor. In AngularJS I would write something like this: m.config([" ... to configure AngularDart modules? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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dart - Best practice for effectively scale this UI according to different screen sizes in Flutter

I'm doing a UI in flutter and right now it look great on my emulator but I'm afraid it will break if ... is smaller everything will still fit ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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dart - Query elements inside <content> of a custom element

I have two custom elements. The one of them is nested to another one. Something like this: <polymer-element name="my- ... here! // .. } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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dart - js interop compiled with dart2js error - Uncaught NoSuchMethodError : method not found:

I generated a sample Polymer web project. Added following js file. jslib.js function testfunction() { alert(" ... .dart.js:12963:17) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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dart - Flutter Splash Screen

How do I show a splash Screen in flutter? So there is an option for launch icon. I added images for ios ... MyApp I want to do intialization) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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dart - Changing Background Color Of Image in Flutter

Can we Change the background color on an Image in Flutter? Like in this Image I want to change the pink ... background color to something else. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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dart - How to rotate an image using Flutter AnimationController and Transform?

I have star png image and I need to rotate the star using Flutter AnimationController and Transformer. I couldn't find any ... }, ), ); } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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dart - How to draw different Pattern in flutter?

I want to draw the different pattern in the flutter like this Although this code is javascript is given in this link See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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dart - What is the equivalent annotation for the old map/@attr in AngularDart?

The AngularDart tutorial (at of the time of this writing), recommends binding component fields to attributes like this: map: ... =>! ??? == @ See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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dart - How to save last opened screen in flutter app

I am trying to reopen last opened screen after boot, Is there any simple way to do so ? sample codes are ... to make the code simple? thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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dart - How to scroll an ExpansionTile / Listview when a tile is expanded?

We have a bunch of ExpansionTile within a ListView (so far not too crazy, right?). Our users would like ... would be greatly appreciated! TIA! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.3k views

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dart - How to get all PDF files from internal as well as external storage in Flutter?

I want to show All pdf files present in internal as well as external storage, So on tapping that particular ... file in full screen dialog. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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dart - How to swipe/drag 2 or more buttons in a grid of buttons using flutter

I have made a grid of buttons using flutter but now I want to swipe through 2 or more buttons in ... -fcbb-cb13-8ab46cf3c44d/screen696x696.jpeg See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.4k views

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dart - Flutter Navigator.of(context).pop vs Navigator.pop(context) difference

What's the difference between Navigator.of(context).pop and Navigator.pop(context)? To me both seems to do ... difference. Is one deprecated? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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