Maybe make a screenshot of the problematic shown menu...
Maybe give us a small project which shows the problem (IDE File->Export as ZIP)
Maybe it is a problem of the Android Version you are using to compile?
All this we just can guess where the problem is.... Upload a small project and we can easily reproduce your problem. Or at least we can probably give congrete answers what the problem is.
Im not a child... Instead of it you can answer, that code works ok in any simple app, please provide an example.
Attached goes an example adding to the MyFirstApp example two menu items and theres no icons when you run the app.
Im testing with Android 4.4.2 in a Samsung Note 3