JNI # include "zcTest.h" problem? ? ?

posts by CCDDzclxy on 2013-10-16 13:45:29 Edit

RT
By learning java jni call C code.

With Eclipse creates a Android Application Project, named zcJniTest2.
Under the project directory create a folder jni, write Android.mk files and zcCallback.c, zcTest.h, zcTest.c file.

Content zcCallback.c as follows:

 
# Include  
# Include  
# Include  
# Include  
# Include  
# Include  
# Include  
# Include  

# Include  
# Include  

# Define LOGI (...) ((void) __android_log_print (ANDROID_LOG_INFO, "native-activity", __ VA_ARGS__)) 
# Define LOGW (...) ((void) __android_log_print (ANDROID_LOG_WARN, "native-activity", __ VA_ARGS__)) 

/ / *** 

# Include "zcTest.h" 


JNIEXPORT int JNICALL Java_com_example_zcjnitest2_MainActivity_TTT (
JNIEnv * env, jobject obj, int _i) 
{
/ / ZcTest (); / / Now here is commented out. 
} 

Content zcTest.h as follows:

 
# Ifndef __ ZC_TEST_H_20131016__ 
# Define __ ZC_TEST_H_20131016__ 

void zcTest (); 

# Endif / / __ ZC_TEST_H_20131016__ 

Content zcTest.c as follows:

 
void zcTest () 
{} 

In this case, use the command ndk-build to compile time is OK.
Then zcCallback.c the JNICALL Java_com_example_zcjnitest2_MainActivity_TTT to read as follows:

 
JNIEXPORT int JNICALL Java_com_example_zcjnitest2_MainActivity_TTT (
JNIEnv * env, jobject obj, int _i) 
{
zcTest (); / / above code here is commented out. 
} 

At this point, then ndk-build command to compile error "error: undefined reference to 'zcTest'".

not already "# include" zcTest.h "" it? How will not find zcTest? ?

How should I get? ? How to modify? ? Seeking advice, seeking advice, help out, thank you.




<-! Main posts under Banner (D4) -><-! Posts under the main text (D5) ->
Reply:
Reference \ android-ndk-r8e \ samples \ two-libs in this example, and you exactly the same
Mk file should be written right
Reply:

cited a floor guoyoulei520 reply:

reference \ android-ndk-r8e \ samples \ two-libs in this example, and you exactly the same
Mk file should be written right

thanks