Unity调用安卓相册选择图片，采用gradle打包，踩坑记录

疫情离职在家没事自己写了个应用，需要用到安卓的打开相册选择图片功能，折腾了3天终于搞定了，以下是记录期间遇到的坑。
参考链接：https://www.cnblogs.com/shawnlen/p/11812954.html
https://www.jianshu.com/p/86b275da600e
最后完成功能，主要是参考了以上两个大佬的方案。
我先按着第二个链接操作的，打出包后，Unity和安卓的交互完全没问题，信息都可以显示。

/*
          * Toast显示unity发送过来的内容
          * @param content           消息的内容
          * @return                  调用是否成功
          */
         public boolean showToast(String content){
             Toast.makeText(getActivity(),content,Toast.LENGTH_SHORT).show();
             //这里是主动调用Unity中的方法，该方法之后unity部分会讲到
             callUnity("Main Camera","FromAndroid", "hello unity i'm android");
             return true;
         }

showToast是接受到Unity的消息后，调用安卓原生方法，但是我不知道安卓原生打开相册，选择图片的方法是啥，也没找到所以放弃了这种方法，不过这个帖子的打包流程对我之后出jar包提供了帮助，如果有哪个大佬知道 Toast.makeText(getActivity(),content,Toast.LENGTH_SHORT).show();这块对应打开相册的方法，希望评论告知一下，实在没查到（也有原因是这功能弄的比较烦躁，没太仔细查，没事我在查查去）。
然后是第一个链接的方法，原作者已经写的很详细了，一步一步跟着来就行了，不过多赘述了，我主要说下打包和打包后闪退或者选择不了图片的问题（处理期间都想砸电脑了，还好最后解决了）。

task makejar(type: Copy){

    delete 'libs/test.jar'

    from('build/intermediates/packaged-classes/release/')

    into('libs')

    include('classes.jar')

    rename('classes.jar','FarmGetAndroidPhoto.jar')
}

makejar.dependsOn(build)

在Terminal里面输入命令 gradlew makejar 等一会就会提示build successful 这就是包打好了。

我这里是没有成功出来的。
首先提一下目录的问题，可能是Android Studio版本的问题，用上边from(‘build/intermediates/packaged-classes/release/’)目录我是出不来包的，自己查找测试了一下，我工程里是用from(‘build/intermediates/aar_libs_directory/release/libs’)这个目录才出来的包，上边代码片的意思其实很简单，就是把之前的jar包删除，然后把from目录下的classes.jar文件复制到into目录，再重命名为rename的名字。所以最后其实出来的jar包都是叫classes.jar,我一开始发现没有，就打包完成后在整个工程搜索classes.jar看生成时间没错，就按着这个目录修改了，不确定之后Android Studio升级会不会再变，就把解决过程写出来了。
代码片在这引用了，我就先把后边的问题放到前边说了。

跳过目录问题，正常进行流程会到这一步，看到提示以下信息：
Task :PhotoModule:compileDebugUnitTestJavaWithJavac FAILED

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ‘:PhotoModule:compileDebugUnitTestJavaWithJavac’.
  Could not find tools.jar. Please check that D:\AndroidConfig\jre contains a valid JDK installation.

解决这个问题，把jdk目录下bin文件夹下的tools.jar拷贝到jre对应目录就可以了
我也不知道为啥会提示这个，jre都是按照jdk的时候按照提示正常安装的，而且我还发现jdk安装完成后，目录里还会有个jre文件夹，我把这个删除了，没看到啥影响。应该是安卓jdk的时候默认在jdk目录安装了jre，不懂有啥意义，知道的大佬可以帮忙解释下，我对安卓的这些环境还不是很了解。

上边这个问题解决了，在运行gradlew makejar会报以下错误

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ‘:PhotoModule:testDebugUnitTest’.
  Process ‘Gradle Test Executor 2’ finished with non-zero exit value 1

• Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Get more help at https://help.gradle.org
  查了半天，有给解决方案的，试了没效果，这log信息也没看出啥，感觉Android Studio的log就会告诉我一个消息“请查看日志信息”，别的啥帮助也没有。
  然后我自己瞎研究，看log，PhotoModule:testDebugUnitTest’，冒号前边是我的工程名字，后边看着是个单元测试，但我怎么也不懂，打个jar包要啥单元测试，于是我就试着看能不能找到执行这个单元测试的代码。果然在工程目录/java/包名下，找到了ExampleUnitTest这个类。

public class ExampleUnitTest {
    @Test
    public void addition_isCorrect() {
        assertEquals(4, 2 + 2);
    }
}

看到有这么段代码，也不懂啥意思，在我看来就是意义不明，反正我是急于出包，抱着试试的态度就把ExampleUnitTest方法里的代码注释了，再打包就可以了。如果有谁知道这是干啥的，希望帮忙解释下，我也是没办法了，本身不喜欢这种看不懂就注释的操作。
到这里总算是出jar包了，高兴的不行，可累死老子了，结果后边才是恶梦。

出来包放到Unity里，进行打包，会报以下错误。
查了半天也没查出个所以然，我就总觉得是Gradle版本没对应上，就各种查，改配置文件，sdk升级，jdk重装，折腾了半天。最后发现第一个链接的作者有说这个问题把jar包里的buildconfig.class，就可以了，但是解压后没有发现这个东西，不仅如此连在Android Studio里我自己创建的类都没有找到，我觉得再怎么打包总不可能把类名也改了把，毕竟Unity和Android交互再我看来还是用的字符串对应名字调用的类和方法。

CommandInvokationFailure: Gradle build failed. 
D:/AndroidConfig/jdk\bin\java.exe -classpath "D:\Unity2018.4.6\Unity\Editor\Data\PlaybackEngines\AndroidPlayer\Tools\gradle\lib\gradle-launcher-5.1.1.jar" org.gradle.launcher.GradleMain "-Dorg.gradle.jvmargs=-Xmx4096m" "assembleRelease"

stderr[

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':checkReleaseDuplicateClasses'.
> 1 exception was raised by workers:
  java.lang.RuntimeException: Duplicate class bitter.jnibridge.JNIBridge found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class bitter.jnibridge.JNIBridge$a found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.Camera2Wrapper found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.GoogleARCoreApi found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.GoogleVrApi found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.GoogleVrProxy found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.GoogleVrProxy$1 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.GoogleVrProxy$2 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.GoogleVrProxy$3 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.GoogleVrProxy$4 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.GoogleVrProxy$a found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.GoogleVrVideo found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.GoogleVrVideo$GoogleVrVideoCallbacks found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.NativeLoader found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.ReflectionHelper found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.ReflectionHelper$1 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.ReflectionHelper$a found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$1 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$10 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$11 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$12 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$13 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$14 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$15 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$16 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$17 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$18 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$19 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$2 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$20 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$21 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$22 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$23 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$3 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$4 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$5 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$6 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$7 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$8 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$9 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$a found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$b found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$c found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$d found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$e found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$e$1 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$e$2 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayer$f found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityPlayerActivity found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityWebRequest found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityWebRequest$1 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.UnityWebRequest$2 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.a found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.a$1 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.a$2 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.a$3 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.a$4 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.a$5 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.a$a found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.b found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.b$a found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.b$b found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.c found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.c$1 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.d found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.e found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.f found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.g found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.h found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.i found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.j found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.k found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.k$1 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.k$2 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.k$3 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.l found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.l$1 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.l$a found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.m found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.n found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.o found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.o$a found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.p found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.p$a found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.p$b found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.q found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.q$1 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.q$1$1 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.q$1$1$1 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.q$2 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.q$3 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.q$4 found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class com.unity3d.player.q$a found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class org.fmod.FMODAudioDevice found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  Duplicate class org.fmod.a found in modules FarmGetAndroidPhoto.jar (FarmGetAndroidPhoto.jar) and unity-classes.jar (unity-classes.jar)
  
  Go to the documentation to learn how to Fix dependency resolution errors.


* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 14s
]
stdout[

> Configure project :
Observed package id 'build-tools;30.0.0-rc2' in inconsistent location 'D:\AndroidConfig\android-sdk_r24.4.1-windows\android-sdk-windows\build-tools\30.0.0-preview' (Expected 'D:\AndroidConfig\android-sdk_r24.4.1-windows\android-sdk-windows\build-tools\30.0.0-rc2')
Observed package id 'tools' in inconsistent location 'D:\AndroidConfig\android-sdk_r24.4.1-windows\android-sdk-windows\tempToolsDir' (Expected 'D:\AndroidConfig\android-sdk_r24.4.1-windows\android-sdk-w

这个错误卡了我好久，属于彻底蒙圈无从下手的状态。然后突然灵光一闪，想到按第二个链接我是可以打出包的，而且交互是通的，虽然一个是jar包一个是aar包，但是unity调用安卓方法的函数是一样，于是就抱着试试态度，用Android Studio中的Build/Make Module‘工程名’，选项试了一下，发现可以出来aar包。
然后放入Unity中打包，还是会有错误，我这里出现的是两个错误：
1.是提示classes.jar重复的错误，log信息忘记保存了，这个网上能查到，解决方案就是把aar/bin目录下的classes.jar删除就好了。

2.是"D:\Unity2018.4.6\Unity\Editor\Data\PlaybackEngines\AndroidPlayer\Tools\gradle\lib\gradle-launcher-5.1.1.jar" org.gradle.launcher.GradleMain “-Dorg.gradle.jvmargs=-Xmx4096m” "assembleRelease"这个，不过这次已经可以在aar包里找到buildconfig.class这个文件了，把它删除掉就好了（删除时直接修改文件名为rar双击打开删除就行，如果是解压删除再压缩，我测试的unity发包时会提示格式错误，压缩软件的压缩方式和打包aar的压缩方式还是有区别的）。
删除bin目录下的classes.jar后，外层还有一个classes.jar，Buildconfig.class文件就在这里。
如果有谁知道怎么能不删除Buildconfig.class解决这个问题，或者Buildconfig.class起的作用，希望告知下，我现在对原理其实不太清楚，纯粹是试出来的（-debug和-release的都可以使用，自己测试过了）。
以上两步弄完，再打包就出来了，我打包选择的都是Gradle选项。
终于出包了，激动啊，赶紧到模拟器跑一下，OK没问题，高兴！
放手机上试一下，吼吼吼，手机上打开相册可以，选择图片没效果，白高兴一场，连上monitor.exe看下log，发现是在选择图片之后，用IO流读取的时候，提示没有权限，郁闷啊，我明明在AndroidManifest里设置了权限的，又是一通查啊（我的手机是小米cc9pro，显示MIUI版本是11.0.9 Android版本是9）。
发现有人说安卓新版本的需要动态请求权限， 然后就试一下呗，试的时候我发现了这个API Permission.RequestUserPermission，看着就是获取授权用的，预感要行，然后又看了下Permission，发现ExternalStorageWrite和ExternalStorageRead不正是我加到AndroidManifest里的选项嘛。

因为想搞清楚原因，特意试了一下。我在打开相册前调用了Permission.HasUserAuthorizedPermission()返回的果真的false，证明在AndroidManifest没有用。
于是我在Start里用Permission.RequestUserPermission()申请了下权限，再打包放到手机上测试，果然可以了。
本身是一个记录贴，所以写的可能啰嗦了些，希望可以帮到别人吧，更希望有大佬能解答一下我遇到的疑问，感激不尽！