On my Samsung Galaxy Note 10.1 in the Evernote app the green round edit button and the samsung multi window button occupy almost the same space. I always hit the wrong one! See attached screenshot. In contrast check the screen shot of quill where the multi window button is integrated more unobtrusively. IIRC that app is open source so you should be able to take a look how it's done. For context: I'm on Android 4.1.2. I've heard they changed the multi window behavior but maybe this is still worth taking a look at. PS: It's neat that evernote is multi window capable at all. Really useful!