Ok, if possible could you post a shot of your Component Tree? If you are using Android Studio , Just go to the design view and it should be on the right. At first glance, you appear to have the DrawerLayout as your root View. This should not be the case, it should be the child of another Root View. However, to help further, I need to see the component overview as I mentioned, and perhaps the file names for each xml. You can wrap everything in your Coordinator Layout, then have the toolbar, and then include your DrawerLayout. That's a guess from what I see.
This is just a guess, I have often found myself with the same issue. If you can show the tree, I could help more