Androidスタジオでプロジェクトを作成またはビルドすると、これらのエラーが発生します。助けてください。すべてのライブラリが接続されていることを確認しましたが、それとは別に、AndrodManifest.xml で、正しく指定されているにもかかわらずアクティビティを見つけることができないというエラーが表示されることに気付きました
Android Dex: [BookReader] the "--core-library" option to suppress this error message.
Android Dex: [BookReader] If you go ahead and use "--core-library" but are in fact
Android Dex: [BookReader] building an application, then be forewarned that your application
Android Dex: [BookReader] will still fail to build or run, at some point. Please be
Android Dex: [BookReader] prepared for angry customers who find, for example, that your
Android Dex: [BookReader] application ceases to function once they upgrade their operating
Android Dex: [BookReader] system. You will be to blame for this problem.
Android Dex: [BookReader] If you are legitimately using some code that happens to be in a
Android Dex: [BookReader] core package, then the easiest safe alternative you have is to
Android Dex: [BookReader] repackage that code. That is, move the classes in question into
Android Dex: [BookReader] your own package namespace. This means that they will never be in
Android Dex: [BookReader] conflict with core system classes. JarJar is a tool that may help
Android Dex: [BookReader] you in this endeavor. If you find that you cannot do this, then
Android Dex: [BookReader] that is an indication that the path you are on will ultimately
Android Dex: [BookReader] lead to pain, suffering, grief, and lamentation.
Android Dex: [BookReader] 1 error; aborting