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POCalling Android NDK function from Unity Script
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2012-02-02T23:47:22.450
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2013-08-23T19:15:53.657
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2012-02-16T06:17:10.153
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So I'm creating an Android app that uses Unity ... I am getting some assetbundle from Unity but I do not know the url before Unity starts. Thus Unity needs to call a function on the Native (Android) side to get the url. I have been lost for awhile on how to do this (the Unity documentation is quite terrible imho). I decided to use the NDK to help me out. Without Unity everything about my library file works out... now the issue is calling these C functions in Unity. Here is my lib: <pre><code> #include <jni.h> #include <string.h> #include <android/log.h> #define DEBUG_TAG "NDK_blahy" extern "C" { jstring Java_com_blah_blah_getURL(JNIEnv * env, jobject this); void Java_com_blah_blah_setURL(JNIEnv * env, jobject this, jstring URL); } jstring url; void Java_com_blah_blah_setURL(JNIEnv * env, jobject this, jstring URL) { url = URL; jboolean isCopy; const char * szLogThis = (*env)->GetStringUTFChars(env, URL, &isCopy); __android_log_print(ANDROID_LOG_DEBUG, DEBUG_TAG, "NDK:LC: [%s]", szLogThis); (*env)->ReleaseStringUTFChars(env, URL, szLogThis); } jstring Java_com_lyfelotto_blah_blah_getURL(JNIEnv * env, jobject this) { return url; } </code></pre> My unity code loads the library just fine (using <code>[DllImport ("libname")]</code>). Now, if I load the function "correctly" like this <code>private static extern jstring Java_com_lyfelotto_blah_blah_getURL(JNIEnv * env, jobject this)</code> bad things happen Have I gone about this the wrong way? (Like I said, all I need to do is get a string). Any ideas?
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<java><android><android-ndk><unity3d>
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Calling Android NDK function from Unity Script
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