小编tra*_*dev的帖子

我正在使用 flutter TTS 插件制作一个简单的文本转语音应用程序，并在我的物理 iPhone 和 iPad 上运行它进行调试。

我尝试用谷歌搜索它，flutter 的 github 存储库说我应该运行 flutteranalyze，我就这么做了，但它说没有发现问题。所以我不知道该怎么办。我认为这是 xcode 的问题。

这是我的错误：

Failed to build iOS app\nError output from Xcode build:\n\xe2\x86\xb3\n    ** BUILD FAILED **\n\n\nXcode's output:\n\xe2\x86\xb3\n    <module-includes>:1:9: note: in file included from <module-includes>:1:\n    #import "Headers/flutter_tts-umbrella.h"\n            ^\n    /Users/ragz/Desktop/Desktop/Development/Projects/flutter/useless_app/ios/Pods/Target Support\n    Files/flutter_tts/flutter_tts-umbrella.h:13:9: note: in file included from\n    /Users/ragz/Desktop/Desktop/Development/Projects/flutter/useless_app/ios/Pods/Target Support\n    Files/flutter_tts/flutter_tts-umbrella.h:13:\n    #import "FlutterTtsPlugin.h"\n            ^\n    /Users/ragz/.pub-cache/hosted/pub.dartlang.org/flutter_tts-1.0.0/ios/Classes/FlutterTtsPlugin.h:1:9: error:\n    'Flutter/Flutter.h' file not found\n    #import <Flutter/Flutter.h>\n            ^\n    <unknown>:0: error: could not build Objective-C module 'flutter_tts'\n    note: Using new build system\n    note: …

我正在尝试创建一个简单的应用程序，将帖子添加到 firebase 实时数据库并在 flutter 中的列表视图上显示它们，但是当我将其“发布”到数据库时，在 firebase 控制台上，数据值不断显示为空。有谁知道出了什么问题？

这是我的一些代码 -

飞镖后

class Post {
  Image coverImg;
  File audioFile;
  String body;
  String author;
  Set usersLiked = {};
  DatabaseReference _id;

  Post(this.body, this.author);

  void likePost(User user) {
    if (this.usersLiked.contains(user.uid)) {
      this.usersLiked.remove(user.uid);
    } else {
      this.usersLiked.add(user.uid);
    }
  }

  void update() {
    updatePost(this, this._id);
  }

  void setId(DatabaseReference id) {
    this._id = id;
  }

  Map<String, dynamic> toJson() {
    return {
      'body': this.body,
      'author': this.author,
      'usersLiked': this.usersLiked.toList()
    };
  }
}

Post createPost(record) {
  Map<String, dynamic> attributes = { …