1 files changed, 73 insertions, 0 deletions
diff --git a/jni/hello-jni.c b/jni/hello-jni.c
new file mode 100644
index 0000000..5b838d7
--- /dev/null
+++ b/jni/hello-jni.c
@@ -0,0 +1,73 @@
+#include <string.h>
+#include <jni.h>
+#include <android/log.h>
+
+#if 1 // Simple JNI Implementation
+JNIEXPORT
+jstring
+JNICALL
+Java_tk_oxore_NativeArmv6_DummyAct_helloJni(JNIEnv* env, jobject thiz)
+{
+    
+    __android_log_write(ANDROID_LOG_DEBUG, "HELLOJNI", "Debug Log");
+    return (*env)->NewStringUTF(env, "Hello Form JNI");
+}
+
+#else // Alternative JNI imlementation
+jstring
+helloJni(JNIEnv* env, jobject thiz)
+{
+    __android_log_write(ANDROID_LOG_DEBUG, "HELLOJNI", "Debug Log");
+    return (*env)->NewStringUTF(env, "Hello Form JNI");
+}
+
+jint
+JNI_OnLoad(JavaVM* vm, void* reserved)
+{
+    __android_log_write(ANDROID_LOG_DEBUG, "HELLOJNI", "Running JNI_OnLoad");
+
+    if (vm == NULL) {
+        __android_log_write(ANDROID_LOG_DEBUG, "HELLOJNI", "vm == NULL");
+        return JNI_ERR;
+    }
+
+    JavaVMAttachArgs args;
+    args.version = JNI_VERSION_1_6; // choose your JNI version
+    args.name = NULL; // you might want to give the java thread a name
+    args.group = NULL; // you might want to assign the java thread to a ThreadGroup
+    JNIEnv* env;
+    if ((*vm)->AttachCurrentThread(vm, &env, &args) != JNI_OK) {
+        __android_log_write(ANDROID_LOG_DEBUG, "HELLOJNI", "GetEnv != JNI_OK");
+        return JNI_ERR;
+    }
+
+    if (env == NULL) {
+        __android_log_write(ANDROID_LOG_DEBUG, "HELLOJNI", "env == NULL");
+        return JNI_ERR;
+    }
+
+    if ((*env)->FindClass == NULL) {
+        __android_log_write(ANDROID_LOG_DEBUG, "HELLOJNI", "No `FindClass` function provided");
+        return JNI_ERR;
+    }
+
+    // Find your class. JNI_OnLoad is called from the correct class loader context for this to work.
+    jclass c = (*env)->FindClass(env, "tk/oxore/NativeArmv6/DummyAct");
+    if (c == NULL) {
+        __android_log_write(ANDROID_LOG_DEBUG, "HELLOJNI", "c == NULL");
+        return JNI_ERR;
+    }
+
+    // Register your class' native methods.
+    static const JNINativeMethod methods[] = {
+        {"helloJni", "()Ljava/lang/String;", (void*)&helloJni},
+    };
+    int rc = (*env)->RegisterNatives(env, c, methods, sizeof(methods)/sizeof(*methods));
+    if (rc != JNI_OK) {
+        __android_log_write(ANDROID_LOG_DEBUG, "HELLOJNI", "rc != JNI_OK");
+        return rc;
+    }
+
+    return JNI_VERSION_1_6;
+}
+#endif