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", "message here");
Now let's say I have an integer called testint. How can I print the value of this int?
Something like this prints the address, but I want the value. I haven't found anything in C++ on how to do this. Thanks for any help!
__android_log_print(ANDROID_LOG_INFO, "sometag", "%p", *test);
Here's the most concise way I've seen:
#include <android/log.h>
#define LOG_TAG "someTag"
#define LOGE(...) __android_log_print(ANDROID_LOG_ERROR,LOG_TAG,__VA_ARGS__)
#define LOGW(...) __android_log_print(ANDROID_LOG_WARN,LOG_TAG,__VA_ARGS__)
#define LOGD(...) __android_log_print(ANDROID_LOG_DEBUG,LOG_TAG,__VA_ARGS__)
#define LOGI(...) __android_log_print(ANDROID_LOG_INFO,LOG_TAG,__VA_ARGS__)
...
// Now you can log very simply like this:
int foo = 42;
LOGD( "This is a number from JNI: %d", foo );
Also, make sure you link to the log library in your Android.mk:
LOCAL_LDLIBS := -llog