我正在尝试构建一个 Flutter 应用程序,但我一直在尝试动态更新列表中项目的数量。我正在从本地读取 json 文件,然后将其保存到 MyAppState 中的列表中。然后该列表将在 gridview 中显示给用户。列表中的每个项目都有一个加号和减号按钮,我可以使用 onPressed() 从用户的项目“集合”中添加/删除项目。我目前面临的...
launchURL='null', sound='null', ledColor='null', lockScreenVisibility=1, groupKey='null', groupMessage='null', actionButtons=null, fromProjectNumber='659877383377', backgroundImageLayout=null, collapseId='null', priority=5, rawPayload='{"google.delivered_priority":"normal","google.sent_time...
The app will go fullscreen but then when keyboard is opened and closed the app incorrectly sets a window inset the size of the navigation bars even though there is no navigation bar. Example screenshot showing the content in white and the background in red. Original bug content "Extracting ...
你错了。当您使用pageView时，它会在页面变更后呼叫onPageChanged函数。如果要以编程方式更改页面，则应...
ParallaxScrollingBackground LineItem PolygonItem Additional Qt Quick Components Image BorderImage Text Rectangle Input SimpleButton StyledButton JoystickControllerHUD TwoAxisController Additional Qt Quick Components MouseArea MultiPointTouchArea Flickable Keys TextInput TextEdit Physics...
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This doesn't seem to be possible to change width of PopupMenuItem to the full width of the screen However, this is not in Material Design guidelines https://material.io/components/menus#behavior code sample import 'package:flutter/material.dart'; void main() => runApp(MyApp()); class ...
Expected: The blue background pushes until the bottom of the screen, while the gestures bar stays floating over the app. Result: The navigation bar is still black, the app doesn't draw until the bottom. Sample code import'package:flutter/material.dart';import'package:flutter/services.dart';...