在unity和本机android sdk之间使用共享的首选项 [英] Using shared preferences between unity and native android sdk

问题描述

我正在使用本地android sdk开发的应用程序上工作.但是我有一个在Unity上工作的同事.

I am working on an app using native android sdk development. However I have a co-worker who is working on Unity.

我想创建一个可以完成一些工作的活动A，然后调用另一个活动B.

I would like to create an activity A that would does some work and then call another activity B.

我的同事正在使用Unity创建活动B屏幕.

My coworker is creating Activity B screen using Unity.

这两个活动都将使用共享的首选项(对其进行读写)

Both activities will be using shared preferences (reading and writing to it)

有没有办法做到这一点?

Is there way that this can be accomplished?

非常感谢您

推荐答案

您需要为Android编写一个插件才能使其正常工作.虽然正式文档非常适合入门，但是这里有一些示例代码，您可以在阅读完之后使用.

You'd need to write a plugin for Android to get this to work. While the official doc is great to get started, here's some sample code you can use after you've gone through it.

我不会详细介绍如何创建插件，因为在Unity网站上有很好的记录(nexx给出的链接)

I won't go into details about how to create the plugin, because that's pretty well documented on the Unity website (link given by nexx)

在下面的示例中，我仅编写了两种方法.您可以修改它们以接受并返回其他数据类型，或者更好地使它们通用.

本地Android代码

In the below example, I've just written a couple of methods. You can modify them to accept and return other data types, or better make them generic.

Native Android Code

public static final String PREFS_NAME = "MyPrefsFile";

public void setPreferenceString (String prefKey, String prefValue) {
    SharedPreferences settings = getSharedPreferences(PREFS_NAME, 0);
    SharedPreferences.Editor editor = settings.edit();
    editor.putString(prefKey, prefValue);
    editor.commit();

}

public String getPreferenceString (String prefKey) {
    SharedPreferences settings = getSharedPreferences(PREFS_NAME, 0);
    String playerName = settings.getString(prefKey, "");
    return playerName;
}

现在，在 Unity C#端，您的插件将具有这样的代码

Now, on Unity C# side, your plugin will have code like this

    AndroidJavaObject AJO = null;

public void SetPreferenceString (string prefKey, string prefValue) {
    if(AJO == null)
        AJO = new AndroidJavaObject("com.yourcompany.productname.activity", new object[0]);

    AJO.Call("setPreferenceString", new object[] { prefKey, prefValue } );
}

public string GetPreferenceString (string prefKey) {
    if(AJO == null)
        AJO = new AndroidJavaObject("com.yourcompany.productname.activity", new object[0]);

    if(AJO == null)
        return string.Empty;
    return AJO.Call<string>("getPreferenceString", new object[] { prefKey } );
}

在Unity中的用法

//Setting a player's name to be "John Doe"
void Start () {
    SetPreferenceString("playerName", "John Doe");
}

//Get the stored player's name
string GetPlayerName () {
    return GetPreferenceString("playerName");
}

这绝不是编写插件的最佳方法.但是，它应该为您提供一个如何处理SharedPrefs的思路.

This is by no means the best way of writing the plugin. It should, however give you a fair idea how to handle SharedPrefs.

显然，请确保两个人都使用相同的首选项！

Obviously, ensure that both of you are using the same preferences!

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