Logging values of variables in Android native ndk

Question

I set up logging with C++ in Android NDK.

I can print a message to logcat like this:

__android_log_write(ANDROID_LOG_INFO, \"tag here\", \"mess         


        

Answer 1

__android_log_print() takes a format string and a variable argument list. The format specifier you're looking for to print out a signed integer is "%d". So something like this is what you want:

int foo = 42;
__android_log_print(ANDROID_LOG_INFO, "SomeTag", "foo is %d", foo);

For more information on format strings, you can see the sprintf manual.