Question

当我尝试运行我的Android应用程序并且包含＆＃34; javaee-api-7.0.jar＆＃34;在我的libs文件夹中，我在编译时遇到以下错误：

[2014-04-22 11:27:53 - firstApp] Dx 
trouble processing "javax/management/j2ee/ListenerRegistration.class":

Ill-advised or mistaken usage of a core class (java.* or javax.*)
when not building a core library.

This is often due to inadvertently including a core library file
in your application's project, when using an IDE (such as
Eclipse). If you are sure you're not intentionally defining a
core class, then this is the most likely explanation of what's
going on.

However, you might actually be trying to define a class in a core
namespace, the source of which you may have taken, for example,
from a non-Android virtual machine project. This will most
assuredly not work. At a minimum, it jeopardizes the
compatibility of your app with future versions of the platform.
It is also often of questionable legality.

If you really intend to build a core library -- which is only
appropriate as part of creating a full virtual machine
distribution, as opposed to compiling an application -- then use
the "--core-library" option to suppress this error message.

If you go ahead and use "--core-library" but are in fact
building an application, then be forewarned that your application
will still fail to build or run, at some point. Please be
prepared for angry customers who find, for example, that your
application ceases to function once they upgrade their operating
system. You will be to blame for this problem.

If you are legitimately using some code that happens to be in a
core package, then the easiest safe alternative you have is to
repackage that code. That is, move the classes in question into
your own package namespace. This means that they will never be in
conflict with core system classes. JarJar is a tool that may help
you in this endeavor. If you find that you cannot do this, then
that is an indication that the path you are on will ultimately
lead to pain, suffering, grief, and lamentation.

[2014-04-22 11:27:53 - firstApp] Dx 1 error; aborting
[2014-04-22 11:27:53 - firstApp] Conversion to Dalvik format failed with error 1

如何解决此错误？

Answer 1

current set of APIs offered by the Android platform似乎无法使用javax.management.*。这意味着暂时禁止警告是安全的。但是如果Android决定添加这个类，就会有麻烦。

但是，在我的情况下，javaee-api是必需的，但似乎没有实际使用，所以我可以按如下方式禁止这种依赖（语法取自here）：

    compile("io.grpc:grpc-all:0.7.1") {
      exclude group: "javax"
    }

如果您确实需要javaee-api包中的某些内容，则应使用JarJar重命名它，如错误消息所示。 jarjar-gradle插件在这里很有用。

Answer 2

正如@LuiggiMendoza所建议的那样，解决方案不是使用整个javaee-api库，而是使用所需的单个jar组件。

不能包括＆＃34; javaee-api-7.0.jar＆＃34;在Android应用程序中

2 个答案: