如何在 Flutter 中使用 SOAP Api 调用?我试过休息通话工作正常。我需要在 flutter 中构建 SOAP 调用。请分享如何在flutter中调用SOAP
我在运行 Flutter 应用程序时遇到问题。
酒吧失败(69)
我尝试过使用firebase_storage: any和firebase_storage: ^1.0.4
version: 1.0.0+1
environment:
sdk: ">=2.1.0 <3.0.0"
dependencies:
flutter:
sdk: flutter
# The following adds the Cupertino Icons font to your application.
# Use with the CupertinoIcons class for iOS style icons.
cupertino_icons: ^0.1.2
firebase_auth: ^0.8.1+2
firebase_database: ^0.4.6
firbase_storage: any
firebase_core: any
intl: ^0.15.7
image_picker:
dev_dependencies:
flutter_test:
sdk: flutter
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我预计输出会收到退出代码 0,但它却告诉我 pub 失败 (69)
我正在通过构建运行器、json 模型和 json 可序列化为我的 flutter 应用程序制作模型。但我收到了这个错误
Unhandled exception:
RangeError (index): Invalid value: Valid value range is empty: 0
#0 _StringBase.[] (dart:core-patch/string_patch.dart:247:55)
#1 changeFirstChar (file:///C:/flutter/.pub-cache/hosted/pub.dartlang.org/json_model-0.0.2/bin/json_model.dart:89:41)
#2 getType (file:///C:/flutter/.pub-cache/hosted/pub.dartlang.org/json_model-0.0.2/bin/json_model.dart:116:20)
#3 walk.<anonymous closure>.<anonymous closure> (file:///C:/flutter/.pub-cache/hosted/pub.dartlang.org/json_model-0.0.2/bin/json_model.dart:62:23)
#4 _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:379:8)
#5 walk.<anonymous closure> (file:///C:/flutter/.pub-cache/hosted/pub.dartlang.org/json_model-0.0.2/bin/json_model.dart:50:37)
#6 List.forEach (dart:core-patch/growable_array.dart:282:8)
#7 walk (file:///C:/flutter/.pub-cache/hosted/pub.dartlang.org/json_model-0.0.2/bin/json_model.dart:38:8)
#8 main (file:///C:/flutter/.pub-cache/hosted/pub.dartlang.org/json_model-0.0.2/bin/json_model.dart:18:6)
#9 _startIsolate.<anonymous closure> (dart:isolate-patch/isolate_patch.dart:299:32)
#10 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:168:12)
pub finished with exit code 255
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在我的 pubspec.yaml 文件中,我在开发依赖项中添加了这些 flutter 包:
dev_dependencies:
flutter_test:
sdk: flutter
json_model: ^0.0.2
json_serializable:
build_runner:
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我想要为其制作模型的 Json 文件:
第一个 json 文件 …
我找到的有关 web 和dart:html包的所有示例。我可以在桌面控制台程序中从系统获取键盘或鼠标事件吗?
我正在使用 flutter PopUpMenuButton。我想要的是,当我选择菜单上的任何项目时,不应关闭弹出窗口,而是让我从弹出窗口中选择多个值。文档说您可以覆盖 handleTap 属性,但我不清楚该怎么做那?这是有记录的
///The [handleTap] method can be overridden to adjust exactly what happens when
/// the item is tapped. By default, it uses [Navigator.pop] to return the
/// [PopupMenuItem.value] from the menu route.
void handleTap() {
Navigator.pop<T>(context, widget.value);
}
Run Code Online (Sandbox Code Playgroud) 我正在尝试使用生成图像RenderRepaintBoundary并希望将图像保存在我的本地目录中。
我可以保存图像,但得到的是黑色图像而不是二维图像。
我将图像写入目录的代码块:
try {
RenderRepaintBoundary boundary =
globalKey.currentContext.findRenderObject();
var image = await boundary.toImage();
ByteData byteData = await image.toByteData(format: ImageByteFormat.png);
Uint8List pngBytes = byteData.buffer.asUint8List();
final file =
await new File('/<localpath>/image.png').create();
await file.writeAsBytes(pngBytes);
} catch (e) {
print(e);
}
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生成QR码的代码块:
RepaintBoundary( key: globalKey,child: QrImage(data: _dataString,size: 0.3 * bodyHeight,), );
Run Code Online (Sandbox Code Playgroud) 我在 dart 中找到了将普通字符串转换为驼峰式大小写和蛇式大小写的方法,但我想将 SnakeCase 实现为普通句子。
例如:myNameIsJohnDoe到我的名字是 john doe
我注意到切换到 beta 通道(Flutter 2.9.0-0.1.pre)后,~/.pub-cache/credentials.json不再存在。我使用这个文件来设置 CI 作业来部署我的 Flutter 包。它去哪儿了?
更新到Dart SDK和Dart编辑器的0.3.1_r17328版本后,我在导入一些特殊的库Args库时遇到了一些麻烦.我有同样的问题,直接导入Args或导入Web_ui,其中Args是依赖项之一.
这是我的pubspec.yaml:
name: notes
description: A sample application
dependencies:
web_ui: 0.3.0+1
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要么:
name: notes
description: A sample application
dependencies:
args: 0.3.1+1
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这是从build.dart生成的错误
Unable to open file: C:/Users/Fabio/Dropbox/progetti/note/packages/args/args.dart'package:web_ui/component_build.dart': Error: line 25 pos 1: library handler failed
import 'package:args/args.dart';
'file:///C:/Users/Fabio/Dropbox/progetti/note/build.dart': Error: line 1 pos 1: library handler failed
import 'package:web_ui/component_build.dart';
Run Code Online (Sandbox Code Playgroud) 我有一个不太常见的酒吧变压器的用例,所以我想知道它是否可行.我想单独gzip pub构建期间生成的每个css,html和javascript文件.我有两个问题:
如果您想知道我为什么要这样做,我通过S3提供我的应用程序,它不支持动态gzipping.我认为酒吧变形金刚将是最合适的地方.
dart-pub ×10
dart ×8
flutter ×7
android ×1
flutter-test ×1
jsonmodel ×1
model ×1
overriding ×1