Quick example of sending debug info to the log in Android JNI C++
#include <android/log.h> #define LOG_TAG "DEBUG" #define LOGD(...) __android_log_print(ANDROID_LOG_DEBUG,LOG_TAG,__VA_ARGS__) #define LOGE(...) __android_log_print(ANDROID_LOG_ERROR,LOG_TAG,__VA_ARGS__) // Implementation of the native method sayHello() JNIEXPORT jstring JNICALL Java_com_ancientcoder_recog_MainActivity_sayHello(JNIEnv *env, jobject thisObj) { LOGD("Running C++"); }