小编Ann*_*nie的帖子

我是第一次开发Flutter应用程序..我在添加图像时遇到了问题.我有以下问题:

1. 在哪里创建图像文件夹？
2. 在pubspec.ymal中添加资产标签的位置？
3. 这需要资产文件夹吗？

我尝试了什么:

 assets:
    - images/lake.jpg

在pubspec.ymal里面:

完整档案:

name: my_flutter_app
description: A new Flutter application.

dependencies:
  flutter:
    sdk: flutter

  cupertino_icons: ^0.1.2

dev_dependencies:
  flutter_test:
    sdk: flutter

flutter:
  uses-material-design: true,
  assets:
    - images/lake.jpg

错误日志:

#/properties/flutter/properties/uses-material-design: type: wanted [boolean] got true,
Error detected in pubspec.yaml:
Error building assets

FAILURE: Build failed with an exception.

* Where:
Script '/home/abc/Downloads/flutter/packages/flutter_tools/gradle/flutter.gradle' line: 435

* What went wrong:
Execution failed for task ':app:flutterBuildDebug'.
> Process 'command '/home/abc/Downloads/flutter/bin/flutter'' finished with non-zero exit value 1

* Try: …

我已经react-native-material-dropdown在我的 React Native 项目中使用了。我正在从 获取数据API。

问题是我在下拉列表中成功获取名称，但我想要一个hotelId所选名称。我无法解析JSON下拉列表中的整体。

JSON:

    {
            "message": "Success",
            "notificationCount": 0,
            "result": [{
                "hotelId": "india3c71a2b8-05d3-476e-825a-f31e08ac3bdc",
                "name": "Hotel Samrat"
            }, {
                "hotelId": "indiae4ef0d05-f46e-48f3-9bce-a37bfde089a4",
                "name": "Hotel Kalinga Ashok"
            }],
            "status": 1,
            "totalRecord": 2,
            "scopeId": ""
   }

我已经通过以下方式解析了数据：

var count = Object.keys(responseJSON.result).length;
            let drop_down_data = [];
            for (var i = 0; i < count; i++) {
                console.log(responseJSON.result[i].name) // I need to add 
                drop_down_data.push({ value: responseJSON.result[i].name }); // Create your array of data
            } …