Print log in Android

In the standard Android Java program, the logcat mechanism is perfect and easy to understand. Here we mainly talk about the log output method in the C/C ++ program.

1. First, include <cutils/log. h> In the. C or. cpp file where you want to print logs.

Almost all macros of the print function are recorded in this header file.

2. Use the print function android_printlog () where you want to output the log. The function is written as follows:

Android_printlog (PRIO, Tag, FMT );

The PRIO parameter indicates the log level you print, for example, android_log_debug;

The parameter tag indicates the log you print, which is useful when filtering log information;

The FMT parameter indicates the printing format of a variable.

Example: android_printlog (android_log_debug, "WebKit", "The mimetype is % d", mimetype); // assume that mimetype is an integer variable.

 

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