英文:
How can I read the last change even if the program is closed and opened in the differences in the flutter program?
问题
我正在开发一个Flutter项目。这个项目与API一起工作。我提供了在程序内部更改API URL的选项。当用户在程序中进行更改时，即使程序已打开并关闭，我希望能够读取最后一次更改。
我对Flutter还不太熟悉，所以我不知道。我是为了获取信息而提出这个问题。例如，我将值x赋给API变量。然后我在程序中使用y值代替x值。现在，我想在程序关闭和打开时读取每个x和y变量。我应该如何实现这一点？
如果我以C#为例，使用属性设置文件。
英文:
I am developing a project in flutter. this project works with api. I offer the option to change the api url from within the program. When the user makes changes in the program, even if the program is opened and closed, I want to read the last change.
I'm new to flutter so I don't know. I am asking this question for information. For example, I gave the value x to the api variable. Then I gave the y value instead of the x value in the program. Now I want to read every xaman y variable when the program is closed and opened. What is my way to do this?
If I give an example from C#, properties settings file
答案1
得分: 1
你可以使用shared_preferences包来实现这一点。
它们自己网页上稍微缩短的示例：
设置数值：
// 获取共享偏好设置。
final prefs = await SharedPreferences.getInstance();
// 保存一个字符串值到 'url' 键。
await prefs.setString('url', 'https://your.api.example.com');
稍后或在应用程序重新启动后读取该值：
// 获取共享偏好设置。
final prefs = await SharedPreferences.getInstance();
final String? url = prefs.getString('url');
英文:
You can use the shared_preferences package for this.
Slightly shortened example from their own page:
Setting the value:
// Obtain shared preferences.
final prefs = await SharedPreferences.getInstance();
// Save an String value to 'action' key.
await prefs.setString('url', 'https://your.api.example.com');
Reading the value later or after a app restart:
// Obtain shared preferences.
final prefs = await SharedPreferences.getInstance();
final String? url = prefs.getString('url');
答案2
得分: 0
你可以在Flutter中使用Hive，在写入或删除方面，Hive在性能上远远优于SQLite和SharedPreferences。
代码示例
var box = Hive.box('myBox');
box.put('urlName', 'url');
var name = box.get('urlName');
print('URL: $urlName');
英文:
You can use Hive in flutter, Hive greatly outperforms SQLite and SharedPreferences when it comes to writing or deleting.
code example
var box = Hive.box('myBox');
box.put('urlName', 'url');
var name = box.get('urlName');
print('URL: $urlName');
答案3
得分: 0
你可以将数据存储在设备本地存储中。有许多方法可以实现这一点。以下是您可以考虑的几种常用选项。
-
使用sharedPreference来存储数据。
Shared Preference Package -
如果您正在使用GetX状态管理，您可以使用getstorage。
英文:
You can store data in device local storage.There are a lot of methods, you can achieve this thing. Here are couple of most use options you can consider.
- Use sharedPreference to store data.
Shared Preference Package - If you are using getx state management, you can use getstorage.
- Getx Package Link
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