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Issue Running Simple MAUI App Android #1235

Closed larsontim12 closed 2 months ago

larsontim12 commented 2 months ago

When creating a MAUI simple application that uses Android the project errors.

SqlSugar.zip

2>MSBUILD : java.exe error JAVA0000: Error in C:\Users\larsont\.nuget\packages\xamarin.androidx.lifecycle.common\2.6.1.3\buildTransitive\net6.0-android31.0\..\..\jar\androidx.lifecycle.lifecycle-common.jar:androidx/lifecycle/ClassesInfoCache$MethodReference.class:
2>MSBUILD : java.exe error JAVA0000: Type androidx.lifecycle.ClassesInfoCache$MethodReference is defined multiple times: C:\Users\larsont\.nuget\packages\xamarin.androidx.lifecycle.common\2.6.1.3\buildTransitive\net6.0-android31.0\..\..\jar\androidx.lifecycle.lifecycle-common.jar:androidx/lifecycle/ClassesInfoCache$MethodReference.class, obj\Debug\net8.0-android\lp\152\jl\libs\1DE1D621C2C17A95.jar:androidx/lifecycle/ClassesInfoCache$MethodReference.class
2>MSBUILD : java.exe error JAVA0000: Compilation failed
2>MSBUILD : java.exe error JAVA0000: java.lang.RuntimeException: com.android.tools.r8.CompilationFailedException: Compilation failed to complete, origin: C:\Users\larsont\.nuget\packages\xamarin.androidx.lifecycle.common\2.6.1.3\buildTransitive\net6.0-android31.0\..\..\jar\androidx.lifecycle.lifecycle-common.jar
2>MSBUILD : java.exe error JAVA0000: androidx/lifecycle/ClassesInfoCache$MethodReference.class
2>MSBUILD : java.exe error JAVA0000:    at com.android.tools.r8.utils.S0.a(R8_8.2.33_429c93fd24a535127db6f4e2628eb18f2f978e02f99f55740728d6b22bef16dd:135)
2>MSBUILD : java.exe error JAVA0000:    at com.android.tools.r8.D8.main(R8_8.2.33_429c93fd24a535127db6f4e2628eb18f2f978e02f99f55740728d6b22bef16dd:5)
2>MSBUILD : java.exe error JAVA0000: Caused by: com.android.tools.r8.CompilationFailedException: Compilation failed to complete, origin: C:\Users\larsont\.nuget\packages\xamarin.androidx.lifecycle.common\2.6.1.3\buildTransitive\net6.0-android31.0\..\..\jar\androidx.lifecycle.lifecycle-common.jar:androidx/lifecycle/ClassesInfoCache$MethodReference.class
2>MSBUILD : java.exe error JAVA0000:    at Version.fakeStackEntry(Version_8.2.33.java:0)
2>MSBUILD : java.exe error JAVA0000:    at com.android.tools.r8.T.a(R8_8.2.33_429c93fd24a535127db6f4e2628eb18f2f978e02f99f55740728d6b22bef16dd:5)
2>MSBUILD : java.exe error JAVA0000:    at com.android.tools.r8.utils.S0.a(R8_8.2.33_429c93fd24a535127db6f4e2628eb18f2f978e02f99f55740728d6b22bef16dd:82)
2>MSBUILD : java.exe error JAVA0000:    at com.android.tools.r8.utils.S0.a(R8_8.2.33_429c93fd24a535127db6f4e2628eb18f2f978e02f99f55740728d6b22bef16dd:32)
2>MSBUILD : java.exe error JAVA0000:    at com.android.tools.r8.utils.S0.a(R8_8.2.33_429c93fd24a535127db6f4e2628eb18f2f978e02f99f55740728d6b22bef16dd:31)
2>MSBUILD : java.exe error JAVA0000:    at com.android.tools.r8.utils.S0.b(R8_8.2.33_429c93fd24a535127db6f4e2628eb18f2f978e02f99f55740728d6b22bef16dd:2)
2>MSBUILD : java.exe error JAVA0000:    at com.android.tools.r8.D8.a(R8_8.2.33_429c93fd24a535127db6f4e2628eb18f2f978e02f99f55740728d6b22bef16dd:42)
2>MSBUILD : java.exe error JAVA0000:    at com.android.tools.r8.D8.b(R8_8.2.33_429c93fd24a535127db6f4e2628eb18f2f978e02f99f55740728d6b22bef16dd:13)
2>MSBUILD : java.exe error JAVA0000:    at com.android.tools.r8.D8.a(R8_8.2.33_429c93fd24a535127db6f4e2628eb18f2f978e02f99f55740728d6b22bef16dd:40)
2>MSBUILD : java.exe error JAVA0000:    at com.android.tools.r8.utils.S0.a(R8_8.2.33_429c93fd24a535127db6f4e2628eb18f2f978e02f99f55740728d6b22bef16dd:122)
2>MSBUILD : java.exe error JAVA0000:    ... 1 more
2>MSBUILD : java.exe error JAVA0000: Caused by: com.android.tools.r8.utils.b: Type androidx.lifecycle.ClassesInfoCache$MethodReference is defined multiple times: C:\Users\larsont\.nuget\packages\xamarin.androidx.lifecycle.common\2.6.1.3\buildTransitive\net6.0-android31.0\..\..\jar\androidx.lifecycle.lifecycle-common.jar:androidx/lifecycle/ClassesInfoCache$MethodReference.class, obj\Debug\net8.0-android\lp\152\jl\libs\1DE1D621C2C17A95.jar:androidx/lifecycle/ClassesInfoCache$MethodReference.class
2>MSBUILD : java.exe error JAVA0000:    at com.android.tools.r8.utils.Q2.a(R8_8.2.33_429c93fd24a535127db6f4e2628eb18f2f978e02f99f55740728d6b22bef16dd:21)
2>MSBUILD : java.exe error JAVA0000:    at com.android.tools.r8.utils.D2.a(R8_8.2.33_429c93fd24a535127db6f4e2628eb18f2f978e02f99f55740728d6b22bef16dd:54)
2>MSBUILD : java.exe error JAVA0000:    at com.android.tools.r8.utils.D2.a(R8_8.2.33_429c93fd24a535127db6f4e2628eb18f2f978e02f99f55740728d6b22bef16dd:10)
2>MSBUILD : java.exe error JAVA0000:    at java.base/java.util.concurrent.ConcurrentHashMap.merge(ConcurrentHashMap.java:2056)
2>MSBUILD : java.exe error JAVA0000:    at com.android.tools.r8.utils.D2.a(R8_8.2.33_429c93fd24a535127db6f4e2628eb18f2f978e02f99f55740728d6b22bef16dd:6)
2>MSBUILD : java.exe error JAVA0000:    at com.android.tools.r8.graph.m4$a.d(R8_8.2.33_429c93fd24a535127db6f4e2628eb18f2f978e02f99f55740728d6b22bef16dd:6)
2>MSBUILD : java.exe error JAVA0000:    at com.android.tools.r8.dex.c.a(R8_8.2.33_429c93fd24a535127db6f4e2628eb18f2f978e02f99f55740728d6b22bef16dd:61)
2>MSBUILD : java.exe error JAVA0000:    at com.android.tools.r8.dex.c.a(R8_8.2.33_429c93fd24a535127db6f4e2628eb18f2f978e02f99f55740728d6b22bef16dd:12)
2>MSBUILD : java.exe error JAVA0000:    at com.android.tools.r8.dex.c.a(R8_8.2.33_429c93fd24a535127db6f4e2628eb18f2f978e02f99f55740728d6b22bef16dd:9)
2>MSBUILD : java.exe error JAVA0000:    at com.android.tools.r8.D8.a(R8_8.2.33_429c93fd24a535127db6f4e2628eb18f2f978e02f99f55740728d6b22bef16dd:45)
2>MSBUILD : java.exe error JAVA0000:    at com.android.tools.r8.D8.d(R8_8.2.33_429c93fd24a535127db6f4e2628eb18f2f978e02f99f55740728d6b22bef16dd:17)
2>MSBUILD : java.exe error JAVA0000:    at com.android.tools.r8.D8.c(R8_8.2.33_429c93fd24a535127db6f4e2628eb18f2f978e02f99f55740728d6b22bef16dd:69)
2>MSBUILD : java.exe error JAVA0000:    at com.android.tools.r8.utils.S0.a(R8_8.2.33_429c93fd24a535127db6f4e2628eb18f2f978e02f99f55740728d6b22bef16dd:28)
2>MSBUILD : java.exe error JAVA0000:    ... 6 more
2>MSBUILD : java.exe error JAVA0000: Directory 'obj\Debug\net8.0-android\lp\152' is from 'ClassLibrary4.aar'.
2>Done building project "MauiApp2.csproj" -- FAILED.
DotNetNext commented 2 months ago

发具体错误

DotNetNext commented 2 months ago

我这边VS没有装安卓相关的东西

DotNetNext commented 2 months ago

ClassLibrary4.aar 看着像这个类库有问题，你删了看看

DotNetNext commented 2 months ago

从您提供的错误信息来看，项目在编译过程中出现了Java编译错误，原因是androidx.lifecycle.ClassesInfoCache$MethodReference这个类在多个地方被定义了。具体来说，在xamarin.androidx.lifecycle.common NuGet包中的jar文件和项目obj\Debug\net8.0-android\lp\152\jl\libs\1DE1D621C2C17A95.jar中都存在这个类的定义，导致了冲突。

要解决这个问题，您可以尝试以下步骤：

清理和重建项目： 在Visual Studio中，右键点击项目名称，选择“清理”然后“重建”项目。 检查NuGet包版本： 确保项目中使用的所有NuGet包都是最新的，或者它们之间是兼容的版本。有时候，包之间的版本不匹配会导致这种问题。 删除bin和obj文件夹： 有时候，旧的编译文件会干扰新的编译过程。您可以尝试删除项目中的bin和obj文件夹，然后重新编译项目。 检查项目依赖： 查看项目是否不小心引用了重复的库或者不同版本的同一个库。如果是这样，您需要解决这些依赖冲突。 更新或回退NuGet包： 如果问题是由特定版本的NuGet包引起的，尝试更新到最新版本或者回退到一个稳定的旧版本可能有助于解决问题。