Logcat information is not visible due to Android real machine debugging problems

When we use a real machine for Android Application debugging, if we see such information unable to open log device '/dev/log/main': no such file or directory

This is because our mobile phone has not enabled the log record.

My mobile phone uses Huawei c8800 as an example to enable the mobile phone log function.

1. Enter * #2846579 # * in the dialing interface to enter the test menu interface.

2. Project menu-background settings

3. Log Settings

L

4. Log switch-log enable log level settings-verbose

5. Dump & log-select all

Restart mobile phone

 

Of course, the commands for different brands of mobile phones entering the test menu interface may be different. If you do not need to print logcat, you can also consider this situation.