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androidcloggingandroid-ndk

C API for logging to logcat

If I have an ELF binary written in C and compiled using an Android NDK, is there an API for logging messages so that they show up in logcat?

Solution

  • Yes. This can be done by including

    #include <android/log.h>

    and calling

    int __android_log_print(
  int prio,
  const char *tag,
  const char *fmt,
  ...
);

    You can even set the default tag via

    void __android_log_set_default_tag(
  const char *tag
);

    This way, you can put NULL as the tag in __android_log_print.

    You'll have to add -llog to your linker flags.