Is “std::cout” usable in Android-ndk

Question

In Android-ndk, we could use \"__android_log_write\", \"__android_log_print\", ... etc to output messages to the \"LogCat\" window. How about if I use \"std::cout\" to outpu

Answer 1

Another option:

#include 

class MyStream
{
private:
   std::stringstream m_ss;
   int m_logLevel;
public:

   MyStream(int Xi_logLevel)
   {
      m_logLevel = Xi_logLevel;
   };
   ~MyStream()
   {
      __android_log_print(m_logLevel,LOG_TAG,"%s", m_ss.str().c_str());
   }

   template MyStream& operator<<(T const& Xi_val)
   {
      m_ss << Xi_val;
      return *this;
   }
};

#define MY_LOG(LOG_LEVEL) MyStream(ANDROID_LOG_##LOG_LEVEL) << __FUNCTION__ << ":" << __LINE__ << " : "

PROS:

(1) The messages are printed immediately.

CONS:

(1) You must to change your code (std::cout -> MY_LOG(X)).

(2) Each a single print produces an object and destroys it.

(*** This answer base on this answer)