android - How to remove ic_launcher.png from activity_main? -


just started learn basic android programming. trying create navigation drawer (which has been done), drawer icon out of place , want remove little green android icon @ top left. don't wanna delete image drawable folder in case decide add 1 after all. how can hide/remove icon through xml/java files, , how shift drawer icon place? enter image description here

if want hide icon set transparent color instead this:

getactionbar().seticon(android.r.color.transparent);

and if want replace icon:

getactionbar().seticon(r.drawable.my_icon);

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