Android: how to replace the three dots in the TOOLBAR menu (not the action bar)

Question

How to replace the three dots that appear in the Toolbar by an image.

Is that even possible?

Answer 1

The "three dots" you see is called the "overflow icon", which is a configurable part of android.support.v7.widget.Toolbar.

In Java, call:

Drawable d = /* your drawable here */;
toolbar.setOverflowIcon(d);

Documentation here: https://developer.android.com/reference/android/support/v7/widget/Toolbar.html#setOverflowIcon(android.graphics.drawable.Drawable)