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maggy
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Asked: March 3, 2021In: flutter

How do I Set Background image in Flutter?

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I’m attempting to set a foundation picture for the landing page. I’m getting the picture place from beginning of the screen and filling the width yet not the tallness. Am I missing something in my code? Are there picture norms ...

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Asked: March 3, 2021In: flutter

What is the difference between functions and classes to create reusable widgets?

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I have realized that it is possible to create widgets using plain functions instead of subclassing StatelessWidget. An example would be this: Widget function({ String title, VoidCallback callback }) { return GestureDetector( onTap: ...

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Asked: February 25, 2021In: flutter

flutter run: No connected devices

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I am trying to create a sample application with flutter (fresh installation) android studio is also installed (fresh installation) Here is the output of flutter run flutter run No connected devices. the output of flutter doctor Doctor summary (to ...

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Asked: February 25, 2021In: flutter

How do I use hexadecimal color strings in Flutter?

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How do I convert a hexadecimal color string like #b74093 to a Color in Flutter? I want to use a HEX color code in Dart.

androiddartflutterios
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Asked: February 18, 2021In: flutter

What is a NoSuchMethod error and how do I fix it?

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I have some code and when I run it produces an error, saying: NoSuchMethod: the method ‘XYZ’ was called on null What does that mean and how do I fix it?

androiddartflutterios
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Asked: February 17, 2021In: sql server

SQLStatement.execute() – multiple queries in one statement

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I’ve written a database generation script in SQL and want to execute it in my Adobe AIR application: Create Table tRole (       roleID integer Primary Key       ,roleName varchar(40) ); Create Table tFile (     fileID integer Primary Key     ,fileName varchar(50)     ,fileDescription varchar(500)     ...

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Asked: February 13, 2021In: flutter

How to deal with unwanted widget build?

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For various reasons, sometimes the build method of my widgets is called again. I know that it happens because a parent updated. But this causes undesired effects. A typical situation where it causes problems is when using FutureBuilder this way: @override Widget build(BuildContext context) ...

androiddartfluttergoogle's flutterios
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