android: how to see LOGV message

In your code add  

#define LOG_NDEBUG 0 


The reason is log.h at system/core/include/cutils/log.h

Ex:
In you want to see LOGV in audio_hw.c

You must add


#define LOG_TAG "audio_hw_primary"
#define LOG_NDEBUG 0
#define LOG_NDEBUG_FUNCTION
#ifndef LOG_NDEBUG_FUNCTION
#define LOGFUNC(...) ((void)0)
#else
#define LOGFUNC(...) (LOGV(__VA_ARGS__))
#endif