Meaning and usage in log

1. the debugging color of log. V is black, and any message will be output. Here v stands for verbose, which is usually used as log. V ("","");

2. The output color of log. D is blue and only the meaning of DEBUG debugging is output. However, it outputs the upper-layer information, which can be selected through the logcat tag of ddms.

3. The output of log. I is green. Generally, it indicates message information. It does not output information of log. V and log. D, but displays information of I, W, and E.

4. log. W indicates orange. It can be seen as a warning of warning. Generally, we need to optimize the android code and select it to output log. E.

5. If log. e is red, you can think of error errors. Here, only red error messages are displayed. We need to carefully analyze these errors and view stack information.

Log. V ("versioncode", "123"); after the log tag is configured, you can filter the desired content in logcat.