Android Studio 给我很多隐藏方法警告。

Question

我正在开发一个Android项目，但是我收到了很多访问隐藏方法的警告，我不知道哪里出了问题。我的应用程序运行良好，所以我真的不知道该如何消除这些警告。请帮帮我，我真的不知道该怎么做。我是Android的初学者，所以我真的没有头绪。

    W/rackingmypantr: Accessing hidden method Ljava/lang/Thread;-><clinit>()V (blacklist, linking, denied)
W/rackingmypantr: Accessing hidden field Ljava/lang/Thread;->EMPTY_STACK_TRACE:[Ljava/lang/StackTraceElement; (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->SUBCLASS_IMPLEMENTATION_PERMISSION:Ljava/lang/RuntimePermission; (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->lock:Ljava/lang/Object; (greylist, linking, allowed)
W/rackingmypantr: Accessing hidden field Ljava/lang/Thread;->daemon:Z (greylist, linking, allowed)
    Accessing hidden field Ljava/lang/Thread;->stillborn:Z (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->threadLocals:Ljava/lang/ThreadLocal$ThreadLocalMap; (greylist, linking, allowed)
    Accessing hidden field Ljava/lang/Thread;->inheritableThreadLocals:Ljava/lang/ThreadLocal$ThreadLocalMap; (greylist, linking, allowed)
    Accessing hidden field Ljava/lang/Thread;->systemDaemon:Z (blacklist, linking, denied)
W/rackingmypantr: Accessing hidden field Ljava/lang/Thread;->started:Z (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->blockerLock:Ljava/lang/Object; (greylist-max-o, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->nextThreadNum()I (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->stillborn:Z (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->systemDaemon:Z (blacklist, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->started:Z (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->blockerLock:Ljava/lang/Object; (greylist-max-o, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->nextThreadNum()I (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->stillborn:Z (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->systemDaemon:Z (blacklist, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->started:Z (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->blockerLock:Ljava/lang/Object; (greylist-max-o, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->init(Ljava/lang/ThreadGroup;Ljava/lang/Runnable;Ljava/lang/String;J)V (greylist-max-o, linking, denied)
    Accessing hidden method Ljava/lang/Thread;-><init>(Ljava/lang/Runnable;Ljava/security/AccessControlContext;)V (blacklist, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->stillborn:Z (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->systemDaemon:Z (blacklist, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->started:Z (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->blockerLock:Ljava/lang/Object; (greylist-max-o, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->nextThreadNum()I (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->stillborn:Z (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->systemDaemon:Z (blacklist, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->started:Z (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->blockerLock:Ljava/lang/Object; (greylist-max-o, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->init(Ljava/lang/ThreadGroup;Ljava/lang/Runnable;Ljava/lang/String;J)V (greylist-max-o, linking, denied)
W/rackingmypantr: Accessing hidden field Ljava/lang/Thread;->stillborn:Z (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->systemDaemon:Z (blacklist, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->started:Z (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->blockerLock:Ljava/lang/Object; (greylist-max-o, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->nextThreadNum()I (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->stillborn:Z (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->systemDaemon:Z (blacklist, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->started:Z (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->blockerLock:Ljava/lang/Object; (greylist-max-o, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->init(Ljava/lang/ThreadGroup;Ljava/lang/Runnable;Ljava/lang/String;J)V (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->stillborn:Z (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->systemDaemon:Z (blacklist, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->started:Z (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->blockerLock:Ljava/lang/Object; (greylist-max-o, linking, denied)
W/rackingmypantr: Accessing hidden method Ljava/lang/Thread;->init(Ljava/lang/ThreadGroup;Ljava/lang/Runnable;Ljava/lang/String;J)V (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->stillborn:Z (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->systemDaemon:Z (blacklist, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->started:Z (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->blockerLock:Ljava/lang/Object; (greylist-max-o, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->init(Ljava/lang/ThreadGroup;Ljava/lang/Runnable;Ljava/lang/String;J)V (greylist-max-o, linking, denied)
W/rackingmypantr: Accessing hidden method Ljava/lang/Thread;-><init>(Ljava/lang/ThreadGroup;Ljava/lang/String;IZ)V (greylist, linking, allowed)
    Accessing hidden field Ljava/lang/Thread;->stillborn:Z (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->systemDaemon:Z (blacklist, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->started:Z (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->blockerLock:Ljava/lang/Object; (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->group:Ljava/lang/ThreadGroup; (greylist, linking, allowed)
    Accessing hidden method Ljava/lang/ThreadGroup;->addUnstarted()V (greylist-max-o, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->auditSubclass(Ljava/lang/Class;)Z (greylist-max-o, linking, denied)
    Accessing hidden method Ljava/lang/Thread$1;-><init>(Ljava/lang/Class;)V (blacklist, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->exit()V (greylist-max-o, linking, denied)
    Accessing hidden method Ljava/lang/ThreadGroup;->threadTerminated(Ljava/lang/Thread;)V (greylist, linking, allowed)
W/rackingmypantr: Accessing hidden field Ljava/lang/Thread;->target:Ljava/lang/Runnable; (greylist, linking, allowed)
    Accessing hidden field Ljava/lang/Thread;->inheritedAccessControlContext:Ljava/security/AccessControlContext; (greylist, linking, allowed)
    Accessing hidden field Ljava/lang/Thread;->blocker:Lsun/nio/ch/Interruptible; (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->uncaughtExceptionHandler:Ljava/lang/Thread$UncaughtExceptionHandler; (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/ThreadGroup;->systemThreadGroup:Ljava/lang/ThreadGroup; (greylist, linking, allowed)
W/rackingmypantr: Accessing hidden field Ljava/lang/Thread;->defaultUncaughtExceptionHandler:Ljava/lang/Thread$UncaughtExceptionHandler; (greylist-max-o, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->getNativeTid()I (blacklist, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->getUncaughtExceptionPreHandler()Ljava/lang/Thread$UncaughtExceptionHandler; (greylist,core-platform-api, linking, allowed)
    Accessing hidden field Ljava/lang/Thread;->uncaughtExceptionPreHandler:Ljava/lang/Thread$UncaughtExceptionHandler; (greylist, linking, allowed)
    Accessing hidden method Ljava/lang/Thread;->init(Ljava/lang/ThreadGroup;Ljava/lang/Runnable;Ljava/lang/String;J)V (greylist-max-o, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->init(Ljava/lang/ThreadGroup;Ljava/lang/Runnable;Ljava/lang/String;JLjava/security/AccessControlContext;)V (blacklist, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->init(Ljava/lang/ThreadGroup;Ljava/lang/Runnable;Ljava/lang/String;JLjava/security/AccessControlContext;)V (blacklist, linking, denied)
W/rackingmypantr: Accessing hidden field Ljava/lang/Thread;->name:Ljava/lang/String; (greylist, linking, allowed)
    Accessing hidden method Ljava/lang/ThreadGroup;->addUnstarted()V (greylist-max-o, linking, denied)
W/rackingmypantr: Accessing hidden method Ljava/lang/Thread;->init2(Ljava/lang/Thread;)V (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->contextClassLoader:Ljava/lang/ClassLoader; (greylist, linking, allowed)
W/rackingmypantr: Accessing hidden method Ljava/lang/ThreadLocal;->createInheritedMap(Ljava/lang/ThreadLocal$ThreadLocalMap;)Ljava/lang/ThreadLocal$ThreadLocalMap; (greylist-max-o, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->interrupt0()V (blacklist, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->isCCLOverridden(Ljava/lang/Class;)Z (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread$Caches;->subclassAuditsQueue:Ljava/lang/ref/ReferenceQueue; (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread$Caches;->subclassAudits:Ljava/util/concurrent/ConcurrentMap; (greylist-max-o, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->processQueue(Ljava/lang/ref/ReferenceQueue;Ljava/util/concurrent/ConcurrentMap;)V (greylist-max-o, linking, denied)
W/rackingmypantr: Accessing hidden method Ljava/lang/Thread;->nativeCreate(Ljava/lang/Thread;JZ)V (greylist-max-o, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->nativeGetStatus(Z)I (greylist-max-o, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->nextThreadID()J (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->threadSeqNumber:J (greylist, linking, allowed)
    Accessing hidden method Ljava/lang/Thread;->nextThreadNum()I (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->threadInitNumber:I (greylist-max-o, linking, denied)
W/rackingmypantr: Accessing hidden field Ljava/lang/Thread;->threadInitNumber:I (greylist-max-o, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->processQueue(Ljava/lang/ref/ReferenceQueue;Ljava/util/concurrent/ConcurrentMap;)V (greylist-max-o, linking, denied)
W/rackingmypantr: Accessing hidden field Ljava/lang/Thread;->defaultUncaughtExceptionHandler:Ljava/lang/Thread$UncaughtExceptionHandler; (greylist-max-o, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->setNativeName(Ljava/lang/String;)V (blacklist, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->setPriority0(I)V (blacklist, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->setUncaughtExceptionPreHandler(Ljava/lang/Thread$UncaughtExceptionHandler;)V (greylist-max-o,core-platform-api, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->sleep(Ljava/lang/Object;JI)V (greylist-max-o, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->sleep(Ljava/lang/Object;JI)V (greylist-max-o, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->blockedOn(Lsun/nio/ch/Interruptible;)V (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->blockerLock:Ljava/lang/Object; (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->blocker:Lsun/nio/ch/Interruptible; (greylist-max-o, linking, denied)
W/rackingmypantr: Accessing hidden method Ljava/lang/Thread;->dispatchUncaughtException(Ljava/lang/Throwable;)V (greylist, linking, allowed)
W/rackingmypantr: Accessing hidden field Ljava/lang/Thread;->tid:J (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->priority:I (greylist, linking, allowed)
W/rackingmypantr: Accessing hidden method Ldalvik/system/VMStack;->getThreadStackTrace(Ljava/lang/Thread;)[Ljava/lang/StackTraceElement; (greylist, linking, allowed)
    Accessing hidden field Llibcore/util/EmptyArray;->STACK_TRACE_ELEMENT:[Ljava/lang/StackTraceElement; (blacklist, linking, denied)
W/rackingmypantr: Accessing hidden field Ljava/lang/Thread;->started:Z (greylist-max-o, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->nativeGetStatus(Z)I (greylist-max-o, linking, denied)
W/rackingmypantr: Accessing hidden field Ljava/lang/Thread;->uncaughtExceptionHandler:Ljava/lang/Thread$UncaughtExceptionHandler; (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->uncaughtExceptionHandler:Ljava/lang/Thread$UncaughtExceptionHandler; (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->blockerLock:Ljava/lang/Object; (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->blocker:Lsun/nio/ch/Interruptible; (greylist-max-o, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->interrupt0()V (blacklist, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->interrupt0()V (blacklist, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->nativePeer:J (greylist, linking, allowed)
    Accessing hidden method Ljava/lang/Thread;->setNativeName(Ljava/lang/String;)V (blacklist, linking, denied)
    Accessing hidden method Ldalvik/system/RuntimeHooks;->getThreadPrioritySetter()Ldalvik/system/ThreadPrioritySetter; (blacklist,core-platform-api, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->setSystemDaemon(Z)V (blacklist, linking, denied)
W/rackingmypantr: Accessing hidden field Ljava/lang/Thread;->systemDaemon:Z (blacklist, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->uncaughtExceptionHandler:Ljava/lang/Thread$UncaughtExceptionHandler; (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->started:Z (greylist-max-o, linking, denied)
    Accessing hidden method Ljava/lang/ThreadGroup;->add(Ljava/lang/Thread;)V (greylist, linking, allowed)
    Accessing hidden field Ljava/lang/Thread;->started:Z (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->stackSize:J (greylist-max-o, linking, denied)
    Accessing hidden method Ljava/lang/Thread;->nativeCreate(Ljava/lang/Thread;JZ)V (greylist-max-o, linking, denied)
    Accessing hidden field Ljava/lang/Thread;->started:Z (greylist-max-o, linking, denied)
    Accessing hidden method Ljava/lang/ThreadGroup;->threadStartFailed(Ljava/lang/Thread;)V (greylist-max-o, linking, denied)
    Accessing hidden method Ldalvik/system/DexPathList;-><init>(Ljava/lang/ClassLoader;Ljava/lang/String;)V (blacklist, linking, denied)
    Accessing hidden field Ldalvik/system/DexPathList;->definingContext:Ljava/lang/ClassLoader; (greylist, linking, allowed)
    Accessing hidden method Ldalvik/system/DexPathList;->splitPaths(Ljava/lang/String;Z)Ljava/util/List; (greylist, linking, allowed)
W/rackingmypantr: Accessing hidden field Ldalvik/system/DexPathList;->nativeLibraryDirectories:Ljava/util/List; (greylist, linking, allowed)
    Accessing hidden field Ldalvik/system/DexPathList;->systemNativeLibraryDirectories:Ljava/util/List; (greylist, linking, allowed)
    Accessing hidden method Ldalvik/system/DexPathList;->getAllNativeLibraryDirectories()Ljava/util/List; (blacklist, linking, denied)
    Accessing hidden method Ldalvik/system/DexPathList;-><init>(Ljava/lang/ClassLoader;Ljava/lang/String;Ljava/lang/String;Ljava/io/File;)V (greylist, linking, allowed)
    Accessing hidden method Ldalvik/system/DexPathList;-><init>(Ljava/lang/ClassLoader;Ljava/lang/String;Ljava/lang/String;Ljava/io/File;Z)V (greylist-max-o, linking, denied)
    Accessing hidden method Ldalvik/system/DexPathList;-><init>(Ljava/lang/ClassLoader;Ljava/lang/String;Ljava/lang/String;Ljava/io/File;Z)V (greylist-max-o, linking, denied)
    Accessing hidden method Ldalvik/system/DexPathList;->splitDexPath(Ljava/lang/String;)Ljava/util/List; (greylist-max-o, linking, denied)
W/rackingmypantr: Accessing hidden method Ldalvik/system/DexPathList;->concat(Ljava/lang/Class;[Ljava/lang/Object;[Ljava/lang/Object;)[Ljava/lang/Object; (blacklist, linking, denied)
    Accessing hidden method Ldalvik/system/DexPathList;->getAllNativeLibraryDirectories()Ljava/util/List; (blacklist, linking, denied)
    Accessing hidden method Ldalvik/system/DexPathList;->lambda$initByteBufferDexPath$0(Ljava/nio/ByteBuffer;)Z (blacklist, linking, denied)
    Accessing hidden method Ldalvik/system/DexPathList;->loadDexFile(Ljava/io/File;Ljava/io/File;Ljava/lang/ClassLoader;[Ldalvik/system/DexPathList$Element;)Ldalvik/system/DexFile; (greylist, linking, allowed)
    Accessing hidden method Ldalvik/system/DexFile;-><init>(Ljava/io/File;Ljava/lang/ClassLoader;[Ldalvik/system/DexPathList$Element;)V (greylist-max-o, linking, denied)

- Castro99

---

我的应用程序运行良好，你还想要什么？ - Stultuske

我想要理解这些警告。 - Castro99

日志开头的"W/"字符串应该是警告（Warning）的意思，如果我没记错的话。 - Castro99

这些警告会在应用程序打开时立即出现，就在一开始。但我不知道是什么原因导致它们。 - Castro99

你明白这些警告是什么意思吗？我也遇到了同样的问题...让人讨厌。 - Ast

Answer 1

“Accessing hidden field”警告意味着您的应用程序正在使用一些受限制的非SDK接口。

从Android 9（API级别28）开始，平台限制了应用程序可以使用哪些非SDK接口。每当应用程序引用非SDK接口或尝试使用反射或JNI获取其句柄时，这些限制都会生效。这些限制是为了帮助改善用户和开发者的体验，并减少用户崩溃和开发者紧急发布的风险。

此文档提供了关于此主题的全面解释，并提供了如何解决这些问题的指导：

虽然您目前可以使用一些非SDK接口（取决于您的应用程序的目标API级别），但使用任何非SDK方法或字段始终存在高风险破坏您的应用程序。如果您的应用程序依赖于非SDK接口，则应开始计划迁移到SDK接口或其他替代方案。如果您找不到用于应用程序功能的非SDK接口的替代方案，则应请求新的公共API。

- DmitryArc