Question

I know that there are already posts about this error around stack overflow, but from what I have found here on SO and on Google don’t line up with my problem.

I am trying to run my application, but whenever a native function is called my program crashes, and I get the following LogCat…

08-01 09:15:57.448: E/AndroidRuntime(16966): FATAL EXCEPTION: main
08-01 09:15:57.448: E/AndroidRuntime(16966): java.lang.ExceptionInInitializerError
08-01 09:15:57.448: E/AndroidRuntime(16966):    at my.eti.commander.MainMenu.initMain(MainMenu.java:241)
08-01 09:15:57.448: E/AndroidRuntime(16966):    at my.eti.commander.MainMenu.onCreate(MainMenu.java:81)
08-01 09:15:57.448: E/AndroidRuntime(16966):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
08-01 09:15:57.448: E/AndroidRuntime(16966):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
08-01 09:15:57.448: E/AndroidRuntime(16966):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
08-01 09:15:57.448: E/AndroidRuntime(16966):    at android.app.ActivityThread.access$1500(ActivityThread.java:117)
08-01 09:15:57.448: E/AndroidRuntime(16966):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
08-01 09:15:57.448: E/AndroidRuntime(16966):    at android.os.Handler.dispatchMessage(Handler.java:99)
08-01 09:15:57.448: E/AndroidRuntime(16966):    at android.os.Looper.loop(Looper.java:130)
08-01 09:15:57.448: E/AndroidRuntime(16966):    at android.app.ActivityThread.main(ActivityThread.java:3683)
08-01 09:15:57.448: E/AndroidRuntime(16966):    at java.lang.reflect.Method.invokeNative(Native Method)
08-01 09:15:57.448: E/AndroidRuntime(16966):    at java.lang.reflect.Method.invoke(Method.java:507)
08-01 09:15:57.448: E/AndroidRuntime(16966):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
08-01 09:15:57.448: E/AndroidRuntime(16966):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
08-01 09:15:57.448: E/AndroidRuntime(16966):    at dalvik.system.NativeStart.main(Native Method)
08-01 09:15:57.448: E/AndroidRuntime(16966): Caused by: java.lang.UnsatisfiedLinkError: Couldn't load RelayAPI: findLibrary returned null
08-01 09:15:57.448: E/AndroidRuntime(16966):    at java.lang.Runtime.loadLibrary(Runtime.java:429)
08-01 09:15:57.448: E/AndroidRuntime(16966):    at java.lang.System.loadLibrary(System.java:554)
08-01 09:15:57.448: E/AndroidRuntime(16966):    at my.eti.commander.RelayAPIModel$NativeCalls.<clinit>(RelayAPIModel.java:432)
08-01 09:15:57.448: E/AndroidRuntime(16966):    ... 15 more

Here is my Android.mk file:

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)
EXTRA_CFLAGS := -DANDROID
LOCAL_MODULE := RelayAPI
LOCAL_SRC_FILES := RelayAPI.c
include $(BUILD_EXECUTABLE)

Here is a picture of my jni folder…Only RelayAPI will be used, stringstuff is an extra file that isn’t used.

I store all of my native functions in a separate class so that they can be called statically. This isn’t the problem though, because I’ve been moving them around quite a bit but I just decided this would be the best way for me to get it done.

public static class NativeCalls {

    static {
        System.loadLibrary( "RelayAPI");
    }

    public native static byte InitRelayJava();

    public native static void FreeRelayJava();
}

Answer 1

Well, I’ve gotten passed the error. I had asked a different question last month, and while trying to solve that, this error went away. It had to do with setting my environment PATH variable to the NDK folder location. This is a link to a more in depth answer.