Unity无法构建apk Android

Question

我遵循统一的"坦克!" 教程,现在我试图在Android上移植游戏,这是我第一次使用Unity,现在当它构建APK统一告诉我"无法构建APK"然后我得到一些错误,我附加你错误我认为这是致命的,请告诉我它有什么问题.

CommandInvokationFailure: Failed to build apk.
C:/Program Files/Java/jdk-9.0.1\bin\java.exe -Xmx2048M -D com.android.sdkmanager.toolsdir="C:/Android_SDK\tools" -D file.encoding=UTF8 -jar "C:\Program Files\Unity\Editor\Data\PlaybackEngines\AndroidPlayer/Tools\sdktools.jar"-

stderr[
    Exception in thread "main" java.lang.reflect.InvocationTargetException
            at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
            at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
            at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
            at java.base/java.lang.reflect.Method.invoke(Method.java:564)
            at SDKMain.main(SDKMain.java:130)
    Caused by: java.lang.NoClassDefFoundError: sun/misc/BASE64Encoder
            at com.android.sdklib.internal.build.SignedJarBuilder.<init>(SignedJarBuilder.java:177)
            at com.android.sdklib.build.ApkBuilder.init(ApkBuilder.java:446)
            at com.android.sdklib.build.ApkBuilder.<init>(ApkBuilder.java:422)
            at com.android.sdklib.build.ApkBuilder.<init>(ApkBuilder.java:362)
            at UnityApkBuilder.<init>(UnityApkBuilder.java:214)
            at UnityApkBuilder.main(UnityApkBuilder.java:34)
            ... 5 more
    Caused by: java.lang.ClassNotFoundException: sun.misc.BASE64Encoder
            at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:466)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:563)
            at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:496)
        ... 11 more
]
stdout[

]

exit code: 1
UnityEditor.Android.Command.WaitForProgramToRun (UnityEditor.Utils.Program p, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
UnityEditor.Android.Command.Run(System.Diagnostics.ProcessStartInfo psi, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
UnityEditor.Android.AndroidSDKTools.RunCommandInternal (System.String javaExe, System.String sdkToolsDir, System.String[] sdkToolCommand, Int32 emoryMB, System.String workingdir, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
UnityEditor.Android.AndroidSDKTools.RunCommandSafe (System.String javaExe, System.String sdkToolsDir, System.String[] sdkToolCommand, Int32 emoryMB, System.String workingdir, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)

Answer 1

如果您jdeps在您的应用程序上执行,您将能够看到sun.misc.BASE64Encoder已弃用,并且可以替换java.util.Base64自JDK 1.8以来的那个.

该迁移指南读取此还有:

sun.*在JDK 9中删除了一些API.值得注意的是, sun.misc.BASE64Encoder sun.misc.BASE64Decoder已被删除.而是使用受支持的java.util.Base64类,它是在Java SE 8中添加的.

在你的情况下,因为你依赖第三方(android sdktools),他们自己没有解决这个问题.我担心你可能不得不坚持1.8,同时,一旦他们计划迁移他们的文物,就可以向他们的跟踪器报告.

当然,这也意味着你必须在某个时间点升级到使用他们的Java 9兼容版本的jar,如果他们计划发布的话.

更新:这可以在 Unity#956425上进行跟踪以获得进一步的更新.