问题
I have a problem with javah, I have read about 4 or 5 stakcoverflow posts with the error "solved" but anything works for me.
My problem:
When i execute the javah command i have this error:
Error: cannot access android.support.v7.app.ActionBarActivity
class file for android.support.v7.app.ActionBarActivity not found
What I have tried:
This is the command that I have tested:
C:\Users\MyUser\workspace3\PruebaApp\jni\include>javah -classpath ../../bin/classes;C:\Users\MyUser\AppData\Local\Android\sdk\platforms\android-14\android.jar -o ACK.h com.test.prueba.ACK
I have tried too the same command with only "/" and only "\" for separating direcotries.
I have tried it with android-11, android-14, and android-21.
I have tried to add the following external jars to my project: "android-support-v4.jar" and "android-support-v7-appcompat.jar"
I have tried to do it creating a external build configuration with eclipse, like here: Javah Error android.app.Activity not found
Tools I'm using
I'm working with eclipse juno, on windows 8.1.
The folder from which I executed the command is {project_dir}/jni/include. I have tried it from different folders, modifying the command correctly.
The .java file that contains the native function is "ACK.java" in the package: "com.test.prueba"
In the project, the android library that I'm using is android 5.0.1
What can I do? Thanks in advance.
回答1:
The native methods declared in your java class is enough for generating JNI header. In your example, the command javah's option -classpath is not very useful. Suppose com/test/prueba/ACK.java is the class you process to generate JNI header. You can change the working directory to {project_dir}\src, execute the command
javah com.test.prueba.ACK
the corresponding JNI header file com_test_prueba_ACK.h will be created in the current directory.
回答2:
You should write full path of android-support-v7-appcompat.jar and android-support-v4.jar in classpath parameter.
回答3:
Please have a look to my answer https://stackoverflow.com/a/52527212/2573138 which integrates in Android Studio the way described by alijandro.
来源：https://stackoverflow.com/questions/28385146/javah-error-cannot-access-android-support-v7-app-actionbaractivity