带有多个jar的Unity3D(android jar + pure java lib) [英] Unity3D with multiple jars (android jar + pure java lib)

问题描述

我是Unity3D的新手，我已经用Java完成了一些项目，这些项目需要包含在我的Unity3D项目中.

I'm new to Unity3D and I have some projects already done with Java which need to be included in my Unity3D project.

我想在Unity3D项目中添加多个jar，但是当它们在Unity项目中运行时，它们之间似乎没有任何依赖关系.

I want to add multiple jars into Unity3D project but it looks like jars are not have any dependency between them when they are running in Unity project.

为此，

• 我试图在Assets/Plugins/Android文件夹中添加所有相关的jar(该文件夹中有一些纯Java jar文件，其中有一个Android jar来调用jar的方法)

• I tried to add all the jars related in Assets/Plugins/Android folder (Multiple some pure java jar files in the folder with an Android jar to invoke the methods of jars)

我试图只制作一个jar文件(通过创建一个包含所有jar的Android项目)

I tried to make only one jar file (By creating an Android project with all the jars included)

使用这两种方法，我可以将项目构建为基于Android的项目，但是它们显示错误，表明相关的库不存在

With these 2 methods, I can build my project as Android based, but they showed errors say related library is not exist

有什么办法可以将多个jar库用于依赖于其他jar的Unity3D项目中?

Is there any way I can use multiple jar library into Unity3D project with dependency to other jars?

换句话说，我想要这种结构

In other words, I want this structure

|主项目(单位)| --dependency-> | Jar lib 1 | --dependency-> | Jar lib 2 |

| Main Project(Unity) | --dependency--> | Jar lib 1 | --dependency--> | Jar lib 2 |

• Jar lib 1:库我需要直接调用方法
• lib lib 2:lib 1使用的库

推荐答案

有什么办法可以将多个jar库用于Unity3D项目 依赖其他罐子?

Is there any way I can use multiple jar library into Unity3D project with dependency to other jars?

否.

如果您有许多相互依赖的jar库，则必须将它们组合为一个.是的，必须将罐子合并为一个，然后您可以建立一个桥梁，Unity可以使用它来访问它们.

If you have many jar libraries that depend on each other, you have to combine them into one. Yes, the jars must be merged into one, then you can make a bridge that Unity can use to access them.

Jar lib 1:库我需要直接调用方法

Jar lib 1: Library I need to call method directly

Jar lib 2:lib 1使用的库

Jar lib 2: A library which lib 1 uses

在这种情况下，您必须在库1 中导入库2 .然后在库1 中创建函数，然后调用Jar 库2 中的函数.然后，您可以构建库1 和库2 .

In this scenario, you have to import the Lib 2 in Lib 1. Then make functions in Lib 1 that calls functions in Jar Lib 2. You can then build Lib 1 and Lib 2.

在Eclipse中，项目-> 全部构建.然后将它们都导出到一个jar文件中.同样，在Eclipse中，文件-> 导出... -> Java -> JAR文件 .接下来，如果两个库都出现，则选择它们.使用以下设置:

In Eclipse, Projects->Build All. Then export them both into one jar file. Again, in Eclipse, File->Export...->Java->JAR file. Next, then select both Libs if they show up. Use the settings below:

Java:

//来自Lib/Jar的东西 2 (假设其中是功能代码)

//Stuff from Lib/Jar 2 (Lets assume this is the function code in it)

public class Lib2{
    public static Lib2 instance = new Lib2();

    public double getRandomNumber() {
        double advancedRandomNumber = 5;
        return advancedRandomNumber;
    }
}

//来自Lib/Jar 1 ( com.roxy.app )包的东西(假设其中是功能代码)

//Stuff from Lib/Jar 1 (com.roxy.app) package (Lets assume this is the function code in it)

public class Lib1{
    public static Lib1 instance = new Lib1();

    public double getMagicRandomNumber() {
        double advancedRandomNumber = 15;
        return advancedRandomNumber;
    }

   //Bridge to access Stuff from jar 2
   public double getExtraMagicRandomNumber()
   {
        return Lib2.instance.getRandomNumber();
   }
}

C#:

  private AndroidJavaClass androidClass;
  private AndroidJavaObject androidFunction;

  #if UNITY_ANDROID
        if (androidClass == null || androidFunction == null)
        {
            androidClass = new AndroidJavaClass("com.roxy.app.Lib1");
            androidFunction = androidClass.GetStatic<AndroidJavaObject>("instance");
        }
  #endif

然后您可以使用以下方法从Lib1调用getMagicRandomNumber()函数:

Then you can call getMagicRandomNumber() function from Lib1 with:

double adRand = androidFunction.Call<double>("getMagicRandomNumber");

然后从Lib1中的桥接函数中调用Lib2中的函数.

And call function from Lib2 from the bridged function made in Lib1.

double adRand = androidFunction.Call<double>("getExtraMagicRandomNumber");

就是这样.并不难，但这可能不进行编译，因为我直接在此编辑器中键入了它.可能需要进行少量修改.

That's it. It's not hard but this may not compile because I typed it directly to this Editor. Minor modification may need to be made.

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