Android hardware abstraction layer and debugging information

First, add the # include "utils/log. H" header file to the. c file.

Then, andorid. mk needs to be added.

Local_shared_libraries + = \

Libcutils \

Libutils

Local_ldlibs + = _ llog

Finally, you can write custom macros:

# Define logd (...) _ android_log_print (android_log_debug, "signedname", _ va_args __)

The _ android_log_print function is used.

Android_log_verbose

Android_log_info

Android_log_warn

Android_log_error

You don't need to check the printed information. logcat-s "signedname: D ".