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I would like to debug a JNI C application by inserting log messages to logcat. What is the C API that does this?
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It defines a way for the bytecode that Android compiles from managed code (written in the Java or Kotlin programming languages) to interact with native code (written in C/C++). JNI is vendor-neutral, has support for loading code from dynamic shared libraries, and while cumbersome at times is reasonably efficient.
JNI is just the way that Java handles calling into native/C++ code, and calling back into Java from there. It has nothing to say about Android - it is a Java language feature. The Android NDK is a way to write Android applications using code called by JNI.
Like this:
#include <android/log.h> __android_log_write(ANDROID_LOG_ERROR, "Tag", "Error here");//Or ANDROID_LOG_INFO, ... Add it to your makefile like this:
LOCAL_LDLIBS := -L$(SYSROOT)/usr/lib -llog If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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