小编Vis*_*n K的帖子

当我跑步时

$ flutter run

我在移动设备上收到提示，询问是否要在设备上安装该应用程序。我同意，那么什么也没发生！

卡在这里

Launching lib/main.dart on POCO F1 in debug mode...
Initializing gradle...                                           1.5s
Resolving dependencies...                                        9.2s
Gradle task 'assembleDebug'...                                  22.9s
Built build\app\outputs\apk\debug\app-debug.apk.
Installing build\app\outputs\apk\app.apk...                     14.9s

那什么都没有

我正在尝试使用 VSCode 调试 C# 脚本。但是当我按 F5 时它显示

但是我确实在 VSCode 中安装了 C# 扩展

关于我的 VSCode

Version: 1.56.2 (system setup)
Commit: 054a9295330880ed74ceaedda236253b4f39a335
Date: 2021-05-12T17:13:13.157Z
Electron: 12.0.4
Chrome: 89.0.4389.114
Node.js: 14.16.0
V8: 8.9.255.24-electron.0
OS: Windows_NT x64 10.0.19042

我的机器上也安装了 Dotnet

dotnet --version
5.0.203

以前，VSCode 用于解决所有必要的依赖项并创建调试 C# 脚本所需的文件。也许最新的更新有一些问题？

我已经使用 ARFoundation 包在 Unity 中构建了一个 ARCore 应用程序。然后，我按照以下链接中的说明将 Unity 应用程序嵌入到原生 Android 应用程序中：Embedded Unity inside Android App。

AR 应用程序作为独立应用程序运行良好。但是我在将其嵌入本机 Android 应用程序时遇到错误：

E/Unity: Unable to find UnityARCore
E/Unity: DllNotFoundException: UnityARCore
at (wrapper managed-to-native) UnityEngine.XR.ARCore.Api:UnityARCore_setCameraPermissionProvider (UnityEngine.XR.ARCore.Api/CameraPermissionRequestProvider)
at UnityEngine.XR.ARCore.ARCoreCameraExtension.Register () [0x00000] in <filename unknown>:0

我试着

launch("tel://21213123123")

但是,我收到以下错误!

PlatformException (PlatformException(error, Calling startActivity() from outside of an Activity  context requires the FLAG_ACTIVITY_NEW_TASK flag. Is this really what you want?, null))

在这个文件中

message_codecs.dart

这是我的错误日志

E/MethodChannel#plugins.flutter.io/url_launcher(26131): Failed to handle method call
E/MethodChannel#plugins.flutter.io/url_launcher(26131): android.util.AndroidRuntimeException: Calling startActivity() from outside of an Activity  context requires the FLAG_ACTIVITY_NEW_TASK flag. Is this really what you want?
E/MethodChannel#plugins.flutter.io/url_launcher(26131):     at android.app.ContextImpl.startActivity(ContextImpl.java:672)
E/MethodChannel#plugins.flutter.io/url_launcher(26131):     at android.app.ContextImpl.startActivity(ContextImpl.java:659)
E/MethodChannel#plugins.flutter.io/url_launcher(26131):     at android.content.ContextWrapper.startActivity(ContextWrapper.java:331)
E/MethodChannel#plugins.flutter.io/url_launcher(26131):     at io.flutter.plugins.urllauncher.UrlLauncherPlugin.onMethodCall(UrlLauncherPlugin.java:61)
E/MethodChannel#plugins.flutter.io/url_launcher(26131):     at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:200)
E/MethodChannel#plugins.flutter.io/url_launcher(26131):     at io.flutter.view.FlutterNativeView.handlePlatformMessage(FlutterNativeView.java:163)
E/MethodChannel#plugins.flutter.io/url_launcher(26131):     at android.os.MessageQueue.nativePollOnce(Native Method)
E/MethodChannel#plugins.flutter.io/url_launcher(26131):     at android.os.MessageQueue.next(MessageQueue.java:323)
E/MethodChannel#plugins.flutter.io/url_launcher(26131):     at …

这是我的代码，我创建了一个ExpansionTile并且它有一个 child TextFormField。

import 'package:flutter/material.dart';

class OrderCreatePage extends StatefulWidget {
  @override
  _OrderCreatePageState createState() => _OrderCreatePageState();
}

class _OrderCreatePageState extends State<OrderCreatePage> {
  String _userID;
  TextEditingController _controllerl;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: new Text("Create"),
      ),
      body: ExpansionTile(
        title: Text("Create"),
        children: <Widget>[
          TextFormField(
            decoration: InputDecoration(
              labelText: "User ID",
              icon: Icon(Icons.face),
            ),
            validator: (val) {},
            controller: _controllerl,
            onSaved: (val) => _userID = val,
          )
        ],
      ),
    );
  }
}

每当我在 中输入内容TextFormField并折叠 时ExpansionTile， …