Why doesn't logcat show anything in my Android?

I had this same issue but my fix was much more basic:

If the LogCat panel is empty in Eclipse the emulator doesn't have the focus. Go to the DDMS perspective and try clicking on the 'emulator' entry in the Devices panel (top-left screen).

Dial

*#*#2846579#*#*

and you will see a hidden menu. Go to the Project Menu > Background Setting > Log setting and define the log availability (log switch) and level (log level setting).

Please note this may apply to Huawei phones only as is stated for an Ideos X3 (here) and is tested at a Honor U8860.

If clicking in Devices panel doesn't bring the spam, use reset adb in dropout menu from triangle on the right of the snapshot button.