std::cout Logs Not Appearing for React Native C++ Turbo Module

[bharatkumar5]

I'm working on a React Native C++ Turbo Module, and I'm trying to use std::cout to print logs for debugging purposes. However, the logs from std::cout are not showing I'm unable to find any of my output in the console when I run my React Native app on an Android device.

#include "NativeSampleModule.h"
#include

namespace facebook::react {

NativeSampleModule::NativeSampleModule(std::shared_ptr jsInvoker)
: NativeSampleModuleCxxSpec(std::move(jsInvoker)) {}

std::string NativeSampleModule::reverseString(jsi::Runtime& rt, std::string input) {
std::cout << "Input string: " << input << std::endl;

return input;

}

void NativeSampleModule::getRms(jsi::Runtime& rt) {
std::cout << "getRms method called!" << std::endl;
}

} // namespace facebook::react

[cortinico]

You won't be able to use std::cout as you'll have to use Android NDK's logging utils, like this:

#include <android/log.h>

#define APPNAME "MyApp"

__android_log_print(ANDROID_LOG_VERBOSE, APPNAME, "The value of 1 + 1 is %d", 1+1);

You might have to also link the log library in your CMake file (but that depends on your specific setup)

Source https://stackoverflow.com/a/4629747