How to add a ListView to a Column in Flutter?
I’ve got this problem too. My solution is use Expanded widget to expand remain space. Column( children: <Widget>[ Expanded( child: horizontalList, ) ], );
flutter
Scaffold.of() called with a context that does not contain a Scaffold
This exception happens because you are using the context of the widget that instantiated Scaffold. Not the context of a child of Scaffold. You can solve this by just using a different context : Scaffold( appBar: AppBar( title: Text(‘SnackBar Playground’), ), body: Builder( builder: (context) => Center( child: RaisedButton( color: Colors.pink, textColor: Colors.white, onPressed: () … Read more
How can I change the app display name build with Flutter?
Android Open AndroidManifest.xml (located at android/app/src/main) <application android:label=”App Name” …> // Your app name here iOS Open info.plist (located at ios/Runner) <key>CFBundleDisplayName</key> <string>App Name</string> // Your app name here or Don’t forget to stop and run the app again.
How to create number input field in Flutter?
You can specify the number as keyboardType for the TextField using: keyboardType: TextInputType.number Check my main.dart file import ‘package:flutter/material.dart’; import ‘package:flutter/services.dart’; void main() => runApp(new MyApp()); class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { // TODO: implement build return new MaterialApp( home: new HomePage(), theme: new ThemeData(primarySwatch: Colors.blue), ); } } class HomePage … Read more
Message “flutter run: No connected devices”
Flutter supports both iOS and Android device/simulators. In the terminal, run the flutter devices command to verify that Flutter recognizes your connected Android device. Here is a reference document on how you can set up a device/simulator to run your application. For, Android (on a Mac system) Set up your Android device To prepare to … Read more
Waiting for another flutter command to release the startup lock
In my case, the following command in Terminal helped (as suggested by Günter Zöchbauer’s comment): killall -9 dart On Windows, run the following in a Command Prompt or PowerShell window (as suggested by upupming’s comment): taskkill /F /IM dart.exe (You can read about taskkill flags in Windows here)
How to do Rounded Corners Image in Flutter
Use ClipRRect it will work perfectly. ClipRRect( borderRadius: BorderRadius.circular(8.0), child: Image.network( subject[‘images’][‘large’], height: 150.0, width: 100.0, ), )
How to run CocoaPods on Apple Silicon (M1)
2022 September Update If you can use Homebrew to manage cocoapods. # Uninstall the local cocoapods gem sudo gem uninstall cocoapods # Reinstall cocoapods via Homebrew brew install cocoapods 2021 Solution # STEP 1: Install ffi sudo arch -x86_64 gem install ffi # STEP 2: Re-install dependencies arch -x86_64 pod install Additional Information #1 For … Read more
How do you detect the host platform from Dart code?
import ‘dart:io’ show Platform; if (Platform.isAndroid) { // Android-specific code } else if (Platform.isIOS) { // iOS-specific code } All options include: Platform.isAndroid Platform.isFuchsia Platform.isIOS Platform.isLinux Platform.isMacOS Platform.isWindows You can also detect if you are running on the web using kIsWeb, a global constant indicating if the application was compiled to run on the web: … Read more
How can I dismiss the on screen keyboard?
For Flutter version 2 or latest : Since Flutter 2 with null safety this is the best way: FocusManager.instance.primaryFocus?.unfocus(); Note: using old ways leads to some problems like keep rebuild states; For Flutter version < 2 : As of Flutter v1.7.8+hotfix.2, the way to go is: FocusScope.of(context).unfocus(); Comment on PR about that: Now that #31909 … Read more