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.

mDrawerToggle = new ActionBarDrawerToggle(         this,                          mDrawerLayout,                 R.drawable.ic_drawer,           R.string.drawer_open,           R.string.drawer_close   ) {     @Override     public void onDrawerClosed(View view) {         invalidateOptionsMenu();          setActionBarMode(ActionBar.NAVIGATION_MODE_TABS);     }      @Override     public void onDrawerOpened(View drawerView) {         invalidateOptionsMenu();          setActionBarMode(ActionBar.NAVIGATION_MODE_STANDARD);     }  }; mDrawerLayout.setDrawerListener(mDrawerToggle); 

Here's what I tried:

• Setting an onClickListener to mDrawerLayout. onClick never gets called
• Setting an onTouchListener to mDrawerLayout. onTouch never gets called
• Researched ActionBarDrawerToggle and DrawerLayout classes. Could not find anything like onDrawerStartedOpening.

Answer 1

DEPRECATED: See other answers for a more suitable solution

There are 2 possible ways to do that:

1. Use onDrawerSlide(View drawerView, float slideOffset) callback

slideOffset changes from 0 to 1. 1 means it is completely open, 0 - closed.

Once offset changes from 0 to !0 - it means it started opening process. Something like:

mDrawerToggle = new ActionBarDrawerToggle(         this,                          mDrawerLayout,                 R.drawable.ic_drawer,           R.string.drawer_open,           R.string.drawer_close   ) {      @Override     public void onDrawerSlide(View drawerView, float slideOffset) {         if (slideOffset == 0                 && getActionBar().getNavigationMode() == ActionBar.NAVIGATION_MODE_STANDARD) {             // drawer closed             getActionBar()                     .setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);             invalidateOptionsMenu();         } else if (slideOffset != 0                 && getActionBar().getNavigationMode() == ActionBar.NAVIGATION_MODE_TABS) {             // started opening             getActionBar()                     .setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);             invalidateOptionsMenu();         }         super.onDrawerSlide(drawerView, slideOffset);     } }; mDrawerLayout.setDrawerListener(mDrawerToggle); 

2. Use onDrawerStateChanged(int newState) callback

You need to listen to STATE_SETTLING states - this state is reported whenever drawer starts moving (either opens or closes). So once you see this state - check whether drawer is opened now and act accordingly:

mDrawerToggle = new ActionBarDrawerToggle(         this,                          mDrawerLayout,                 R.drawable.ic_drawer,           R.string.drawer_open,           R.string.drawer_close   ) {     @Override     public void onDrawerStateChanged(int newState) {         if (newState == DrawerLayout.STATE_SETTLING) {             if (!isDrawerOpen()) {                 // starts opening                 getActionBar()                         .setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);             } else {                 // closing drawer                 getActionBar()                         .setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);             }             invalidateOptionsMenu();         }     } }; mDrawerLayout.setDrawerListener(mDrawerToggle);