I have the same problem with you. You should compile you .c with android toolchain(Whether static link or dynamic link). If you must use the third party compiler, you must compile it with static link.
On 2月24日, 下午4时44分, Jerry Yang <1999bige...@gmail.com> wrote: > Hi,Kozak and all > I checked the logcat, I find it cannot find the jni_Onload, > Thanks for your information, I find I forget the function jni_Onload method, > it is a new requirement after jni)1.2 > Now my hello world working. > Thanks > With best wishes > Jerry > > > > On Mon, Feb 23, 2009 at 12:51 AM, kozak <c.a.subraman...@gmail.com> wrote: > > > Hi, > > Can you please post the logcat as well? Meanwhile, I have tried to > > document something that might be similar to what you are looking for > >http://mybbventures.blogspot.com/. > > > BR > > Kozak > > > On Feb 23, 11:35 am, Jerry Yang <1999bige...@gmail.com> wrote: > > > Hi, all > > > Now, I am trying to verify the JNI in Android java platform. > > > I am using HTC G1 phone. > > > I write a simple .c file to make a hello.so and a simple hello.java file > > to > > > load the library. My story is like below: > > > > 1. create hellolib.c file and compiled to a hellolib.so > > > create a folder in > > > create a hellolib.c file hellolib.c, it really nothing just a function > > > return; > > > #include <jni.h> > > > #define .LOG_TAG "TestLib" > > > #undef LOG > > > #include <utils/Log.h> > > > JNIEXPORT void JNICALL java_com_testHelloLib_PrintHello(JNIEnv * env, > > > jobject jobj) > > > { > > > LOGD("hello android LIB"); > > > > } > > > > I compiled the hellolib.c to .so by changing the android.mk: > > > LOCAL_PATH:= $(call my-dir) > > > include $(CLEAR_VARS) > > > LOCAL_SRC_FILES := \ > > > hellolib.c > > > LOCAL_C_INCLUDES := \ > > > $(JNI_H_INCLUDE) > > > LOCAL_SHARED_LIBRARIES := \ > > > libutils > > > > LOCAL_PRELINK_MODULE := false > > > LOCAL_MODULE := libhello > > > > include $(BUILD_SHARED_LIBRARY) > > > > push the libhello.so to /system/lib > > > > 2. create a .java file. > > > public class HelloAndroid extends Activity { > > > /** Called when the activity is first created. */ > > > @Override > > > public void onCreate(Bundle savedInstanceState) { > > > super.onCreate(savedInstanceState); > > > TextView tv = new TextView(this); > > > native_test.add_xx(1, 2) ; > > > } > > > > } > > > > class native_test{ > > > static { > > > System.loadLibrary("hello");// System.loadLibrary("media_jni"); > > > } > > > public native_test(HelloAndroid helloAndroid) { > > > return; > > > } > > > public static int add_xx(int a, int b) > > > { > > > return 0; > > > } > > > > } > > > > 3. push the .apk to the phone and run from eclips > > > always a run time error like:"the application hello.android has stopped > > > unexpectedly, pla try again" > > > > I changed the System.loadLibrary("hello") to a > > > System.loadLibrary("media_jni") like I saw in android source code, I get > > the > > > same error. > > > > so, Could anyone help me to teach me where is my error? I missed > > something? > > > If my hellolib.so has problem, why I load the media_jni still meet the > > > problem? if my .java has problem, but it seems really like my java is > > like > > > the source code. Do I need to expose the .h file to java app? > > > I am really new for java programming, appreciate for your help! > > > > Thanks > > > with best wishes > > > Jerry- 隐藏被引用文字 - > > - 显示引用的文字 - --~--~---------~--~----~------------~-------~--~----~ unsubscribe: android-porting+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-porting -~----------~----~----~----~------~----~------~--~---
