问题
Im learning to code Android in NDK on WINDOWS Eclipse.... been following a Tutorial Book by Sylvain Ratabouil. So im in Run | External Tools | External Tools Configurations… creating a new program configuration.
Name: MyProject javah
Location : ${env_var:JAVA_HOME}\bin\javah.exe
Working directory: ${workspace_loc:/MyProject/bin}
The problem comes In arguments... when i try Arguments: –d ${workspace_loc:/MyProject/jni} com.myproject.MyActivity as it says in the book
i get when i click run
Exception in thread "main" java.lang.IllegalArgumentException: Not a valid class name: –d
when i try ${workspace_loc:/MyProject/jni} com.myproject.MyActivity}
i get
Exception in thread "main" java.lang.IllegalArgumentException: Not a valid class name: C:\Paul\Workspace\MyProject\jni
UPDATE: i put -classpath first and it's running but can not find the class file for com.myproject
回答1:
after further research.... i did it.
i set arguments to
-d ${workspace_loc:/MyProject/jni} -classpath C:\Paul\android-sdk-windows\platforms\android-17\android.jar;${workspace_loc:/MyProject/bin/classes} com.myproject.MainActivity
回答2:
I also spend some long time on this problem when working with the the mentioned book about Android NDK.
Please note the following:
The java classname is NOT written in { }, just write something like com.myproject.MyActivity
The -classpath parameter can receive several paths devided by semicolon.
In my case this parameters worked:
Location:
${env_var:JAVA_HOME}\bin\javah.exe
Working Directory:
${workspace_loc:/myproject/bin}
Arguments:
-d ${workspace_loc:/myproject/jni} -classpath ${workspace_loc:/myproject/bin/classes};"C:\Eclipse\sdk\platforms\android-18\android.jar" com.myproject.MyActivity
(BTW.: The correct Adroid.jar file is referenced inside the Eclipse project.)
回答3:
Me also facing the same problem tonight, i found a less tedious way as following...
- as "Location" set the javah from your system
- as "Working directory" set the project's bin/classes directory (${workspace_loc:/HelloWorld/bin/classes})
- as "Argument" set the jni folder as the output directory and point out the class on which you want to run the javah (-d "${workspace_loc:/HelloWorld/jni}" com.example.helloworld.MainActivity)
NB :: Dont forget the double qoute (") around the output in the third step ("${workspace_loc:/HelloWorld/jni}")
A full picture is also attached following
回答4:
well in case ...
1-> Goto ( cd C:\Program Files\Java\jdk1.7.0_60\bin)
2-> C:\Program Files\Java\jdk1.7.0_60\bin>javah -jni -classpath F:\Android_OpenGLES\FibonacciNative\bin\classes -d F:\Android_OpenGLES\FibonacciNative\jni\ com.example.fibonaccinative.FibLib
without creating/using environment variable ...
回答5:
Following I tried successfully
javah com.sense.kios.Calculation
Note: Include package name.
In case if javah not found as an command and you getting
The program 'javah' can be found in the following packages:
* gcj-4.6-jdk
* gcj-4.7-jdk
* openjdk-7-jdk
* openjdk-6-jdk
Try: sudo apt-get install <selected package>
use direct path of jdk path, in my case it's /usr/lib/jvm/jdk1.8.0/bin/javah.
回答6:
YES THAT'S CORRECT more abstract would be
-d ${workspace_loc:/MyProject/jni} -classpath ${env_var:ANDROID_SDK_HOME}\platforms\android-16\android.jar;${workspace_loc:/MyProject/bin/classes} com.myproject.MyActivity
来源：https://stackoverflow.com/questions/17631116/java-lang-illegalargumentexception-not-a-valid-class-name-android-ndk-javah