flutter-test

问题 In Flutter integration testing, how can we handle ImagePicker? as well as other platform related plugins? 回答1: Finally, I got a solution for this question. this is the code in app.dart: prepare an image file in assets, for example: images/sample.png. import 'dart:io'; import 'dart:typed_data'; import 'package:path_provider/path_provider.dart'; import 'package:image_picker_test/main.dart' as app; import 'package:flutter_driver/driver_extension.dart'; import 'package:flutter/services.dart';

问题 In Flutter integration testing, how can we handle ImagePicker? as well as other platform related plugins? 回答1: Finally, I got a solution for this question. this is the code in app.dart: prepare an image file in assets, for example: images/sample.png. import 'dart:io'; import 'dart:typed_data'; import 'package:path_provider/path_provider.dart'; import 'package:image_picker_test/main.dart' as app; import 'package:flutter_driver/driver_extension.dart'; import 'package:flutter/services.dart';

问题 In Flutter integration testing, how can we handle ImagePicker? as well as other platform related plugins? 回答1: Finally, I got a solution for this question. this is the code in app.dart: prepare an image file in assets, for example: images/sample.png. import 'dart:io'; import 'dart:typed_data'; import 'package:path_provider/path_provider.dart'; import 'package:image_picker_test/main.dart' as app; import 'package:flutter_driver/driver_extension.dart'; import 'package:flutter/services.dart';

问题 Because of the following error, my app is stuck at HandleMainScreen. It Navigated properly for the first time but gives error in the console but when I hot restart it Navigation doesn't work and app stuck at HandleMainScreen. E/flutter ( 8785): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: NoSuchMethodError: The method 'findAncestorStateOfType' was called on null. E/flutter ( 8785): Receiver: null E/flutter ( 8785): Tried calling: findAncestorStateOfType<NavigatorState>()

问题 I've just tried to install Flutter on Linux and when I try to run a flutter command (flutter doctor), I'm getting Error: Unable to find git in your PATH. Anyone who knows how to solve this? 回答1: Install it using following command. sudo apt-get install git 回答2: Add C:\Program Files\Git\bin\git.exe;C:\Program Files\Git\cmd;C:\Windows\System32 to your PATH variable Do not create new variable for git but add them as I did one after another separating them by ; 回答3: [ASSUMING GIT IS INSTALLED

问题 My custom widget code: class CustomWidget extends StatefulWidget { final int index; final String value; final bool isSelected; final VoidCallback onSelect; const CustomWidget({ Key key, @required this.index, @required this.value, @required this.isSelected, @required this.onSelect, }) : assert(index != null), assert(value != null), assert(isSelected != null), assert(onSelect != null), super(key: key); @override _CustomWidgetState createState() => _CustomWidgetState(); } class

问题 My custom widget code: class CustomWidget extends StatefulWidget { final int index; final String value; final bool isSelected; final VoidCallback onSelect; const CustomWidget({ Key key, @required this.index, @required this.value, @required this.isSelected, @required this.onSelect, }) : assert(index != null), assert(value != null), assert(isSelected != null), assert(onSelect != null), super(key: key); @override _CustomWidgetState createState() => _CustomWidgetState(); } class

问题 I try to query using a bool if a document exists on the cloudfirestore or not. Unfortunately, my code does not work I tried the following, but the bool does not change. getok() { bool ok; Firestore.instance.document('collection/$name').get().then((onexist){ onexist.exists ? ok = true : ok = false; } ); if (ok = true) { print('exist'); } else { print('Error'); } } 回答1: you could try doing it this way though im usi IDS static Future<bool> checkExist(String docID) async { bool exists = false;

问题 Now, the image is smoothly rotating only from left to right when I make a gesture of 360 degree. Required result: Should rotate from right to left when we make a gesture of 360 degree. Done : Should rotate from right to left when we make a gesture of 360 degree. Once we start rotating from left to right at some point and again back to right to left it should rotate from either direction from which the gesture is made. import 'dart:math'; import 'package:flutter/material.dart'; class

问题 How can I test code in flutter, that is dependent on the path_provider plugin? When executing tests for code that is dependent on the path_provider plugin, I get the following error: MissingPluginException(No implementation found for method getStorageDirectory on channel plugins.flutter.io/path_provider) package:flutter/src/services/platform_channel.dart 319:7 MethodChannel.invokeMethod ===== asynchronous gap =========================== dart:async _asyncErrorWrapperHelper package: mypackage