Hi all,
I have another problem with Maven: Android plugins seems to call javac and/or
dx incorrectly.
After adding Android platform as dependency to Maven project, I am getting long
message from dx that I am trying to provide own implementation for core
libraries, and that I should not do it.
[INFO] trouble processing "java/nio/CharBuffer.class":
[INFO]
[INFO] Ill-advised or mistaken usage of a core class (java.* or javax.*)
[INFO] when not building a core library. (…)
I have read that this message appears when one tries to pass android.jar to dx
(instead of passing it just to javac). As workaround, I have removed dependency
on Android, and added path to android.jar into maven-compiler-plugin
configuration:
<compilerArguments>
<classpath>${env.ANDROID_HOME}/platforms/android-8/android.jar</classpath>
</compilerArguments>
This did the trick and allowed me to build working application. But today,
another problem appeared: as I've probably completely overwritten "-classpath"
parameter of javac, maven does not passing it paths to other dependencies. In
result, I see lot of "package (…) does not exist" and "can not find symbol (…)"
errors. They are saying about libraries which are defined as dependencies.
I was trying to extend "classpath" parameter by adding paths to my dependencies
manually, but surprisingly, it does not work (and I prefer to force maven to do
this). Removing "classpath" element make javac complaining that "package
os.android does not exists". And adding android to dependencies moves me to the
beginning - dx complains about core classes.
Error message informs about "--core-classes" argument which may be passed to
dx, but may result in "pain, suffering, grief, and lamentation". I've checked
that maven-android may be configured to pass it. Do you think this is safe to
use it? I suppose this message should appear when using libraries incompatible
with Android (as defining core classes is forbidden on this platform). If I use
the "--core-classes" switch, I will not be informed about incompatible
libraries, which may cause many troubles in the future.
I have no idea how to solve it. I was trying to compile with both android.jar
from Maven Central repository, and with android.jar from SDK - both causes the
same error.
Is there any other way to do it, instead of passing "--core-classes" argument?
Best regards,
Mariusz Pluciński
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