RTEditor/src/main/java/com/onegravity/rteditor/RTManager.java
public void unregisterToolbar(RTToolbar toolbar) {
        mToolbars.remove(toolbar.getId());
        toolbar.removeToolbarListener();
        updateToolbarVisibility();
    }
public void unregisterToolbar(RTToolbar toolbar) {
        mToolbars.remove(toolbar.getId());
        toolbar.removeToolbarListener();
        updateToolbarVisibility();
    }
Unregister a toolbar.
<p>
This method may be called before the component is destroyed to
stop any interaction with the toolbar. Not doing so may result
in (asynchronous) calls coming through when the Activity/Fragment
is already stopping its operation.
<p>
Must be called from the ui thread.
<p>
Important: calling this method is obsolete once the
onDestroy(boolean) is called

@param toolbar The toolbar to unregister.