How to detect that the DrawerLayout started opening?

Question

So I have tabs that I want to hide when the Navigation Drawer starts opening. The code I have hides them when it finished opening, but it\'s not what I want

Answer 1

Up-to-date solution:

As others have suggested, the current answer is outdated and it's advised to use mDrawerLayout.addDrawerListener(). A working solution would then be:

mDrawerLayout.addDrawerListener(new DrawerLayout.SimpleDrawerListener() {
        @Override
        public void onDrawerStateChanged(int newState) {
            if (newState == DrawerLayout.STATE_SETTLING && !mDrawerLayout.isDrawerOpen(GravityCompat.START)) {
                // Drawer started opening
            }
        }
    });

Naturally, replace GravityCompat.START with whatever identifies your drawer (layout ID or its gravity ~ location).

Also, if you want to detect when the drawer starts closing, you can simply do:

mDrawerLayout.addDrawerListener(new DrawerLayout.SimpleDrawerListener() {
        @Override
        public void onDrawerStateChanged(int newState) {
            if (newState == DrawerLayout.STATE_SETTLING) {
                if (!mDrawerLayout.isDrawerOpen(GravityCompat.START)) {
                    // Drawer started opening
                } else {
                    // Drawer started closing
                }
            }
        }
    });