JavaDoc generation in Android Studio: NullPointerException -

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when trying generate javadoc in android studio, acts , shows countless errors concerning non-existing packages , unknown symbols (mostly android-related stuff).

finally error message:

standard doclet version 1.7.0_55 building tree packages , classes... java.lang.nullpointerexception     @ com.sun.tools.javadoc.typemaker.gettype(typemaker.java:83)     @ com.sun.tools.javadoc.typemaker.gettype(typemaker.java:44)     @ com.sun.tools.javadoc.classdocimpl.superclasstype(classdocimpl.java:496)     @ com.sun.tools.doclets.internal.toolkit.util.util.getallinterfaces(util.java:459)     @ com.sun.tools.doclets.internal.toolkit.util.util.getallinterfaces(util.java:497)     @ com.sun.tools.doclets.internal.toolkit.util.classtree.processtype(classtree.java:194)     @ com.sun.tools.doclets.internal.toolkit.util.classtree.buildtree(classtree.java:146)     @ com.sun.tools.doclets.internal.toolkit.util.classtree.<init>(classtree.java:91)     @ com.sun.tools.doclets.internal.toolkit.abstractdoclet.startgeneration(abstractdoclet.java:123)     @ com.sun.tools.doclets.internal.toolkit.abstractdoclet.start(abstractdoclet.java:83)     @ com.sun.tools.doclets.formats.html.htmldoclet.start(htmldoclet.java:63)     @ com.sun.tools.doclets.standard.standard.start(standard.java:39)     @ sun.reflect.nativemethodaccessorimpl.invoke0(native method)     @ sun.reflect.nativemethodaccessorimpl.invoke(nativemethodaccessorimpl.java:57)     @ sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl.java:43)     @ java.lang.reflect.method.invoke(method.java:606)     @ com.sun.tools.javadoc.docletinvoker.invoke(docletinvoker.java:280)     @ com.sun.tools.javadoc.docletinvoker.start(docletinvoker.java:160)     @ com.sun.tools.javadoc.start.parseandexecute(start.java:397)     @ com.sun.tools.javadoc.start.begin(start.java:167)     @ com.sun.tools.javadoc.main.execute(main.java:59)     @ com.sun.tools.javadoc.main.main(main.java:49) 342 warnings  javadoc exited exit code 1

once in javadoc generation wizard

  1. check include jdk , library sources

  2. add line in front of other command line arguments 

    -encoding utf-8 -bootclasspath /path/to/sdk/platforms/android-##/android.jar

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