感谢Timo的帮助和链接。为了后代，我添加了一个完整的代码集，该代码集将经历从现有的C 2D基本数组生成Java可消耗的2D基本数组的过程。
// Returns a 2D float array from C to JavajobjectArray ndk_test_getMy2DArray(JNIEnv* env, jobject thiz, jlong context){ // Cast my context reference MyContextRef contextRef = (MyContextRef) context; // Get the length for the first and second dimensions unsigned int length1D = MyContextGet1DLength(contextRef); unsigned int length2D = MyContextGet2DLength(contextRef); // Get the 2D float array we want to "Cast" float** primitive2DArray = MyContextGet2DArray(contextRef); // Get the float array class jclass floatArrayClass = (*env)->FindClass(env, "[F"); // Check if we properly got the float array class if (floatArrayClass == NULL) { // Ooops return NULL; } // Create the returnable 2D array jobjectArray myReturnable2DArray = (*env)->NewObjectArray(env, (jsize) length1D, floatArrayClass, NULL); // Go through the firs dimension and add the second dimension arrays for (unsigned int i = 0; i < length1D; i++) { jfloatArray floatArray = (*env)->NewFloatArray(env, length2D); (*env)->SetFloatArrayRegion(env, floatArray, (jsize) 0, (jsize) length2D, (jfloat*) primitive2DArray[i]); (*env)->SetObjectArrayElement(env, myReturnable2DArray, (jsize) i, floatArray); (*env)->DeleteLocalRef(env, floatArray); } // Return a Java consumable 2D float array return myReturnable2DArray;}
