Navigation Drawer lag on Android

You can do It this way to avoid drawer lag, change your onItemClick:

layoutDrawer.closeDrawer(linearDrawer);setLastPosition(posicao);new Handler().postDelayed(new Runnable() {        @Override        public void run() {            setFragmentList(lastPosition);        }    }, 200);

Edit: prefered way should be setting DrawerListener on DrawerLayout and setting your fragment in onDrawerClosed like this:

Fragment mFragmentToSet = null;@Overridepublic boolean onNavigationItemSelected(@NonNull MenuItem item) {    // Handle navigation view item clicks here.    switch (item.getItemId()) {        case R.id.nav_home:            mFragmentToSet = HomeFragment.newInstance();             break;    }    mDrawerLayout.closeDrawer(GravityCompat.START);    return true;}

mDrawerLayout.addDrawerListener(new DrawerLayout.DrawerListener() {        @Override public void onDrawerSlide(View drawerView, float slideOffset) {}        @Override public void onDrawerOpened(View drawerView) {}        @Override public void onDrawerStateChanged(int newState) {}        @Override        public void onDrawerClosed(View drawerView) {          //Set your new fragment here          if (mFragmentToSet != null) {            getSupportFragmentManager()                  .beginTransaction()                  .replace(FRAGMENT_CONTAINER_ID, mFragmentToSet)                  .commit();            mFragmentToSet = null;          }        }    });

Rather than do transaction in onClick, why not do it in onDrawerClosed from DrawerLayout.DrawerListener?

I think I have found the best solution for this !

First do your fragment transaction like so :

new Handler().post(new Runnable() {                @Override                public void run() {                    getSupportFragmentManager()                            .beginTransaction()                            .setCustomAnimations(android.R.anim.fade_in, android.R.anim.fade_out)                            .replace(R.id.container, finalMenuFragment)                            .commit();                }            });

I know it looks useless to post a Runnable but this hack avoid lag on the click animation on the drawer especially when you use android:background="?attr/selectableItemBackground" for a clickable element.

And then you close the drawer AT THE END OF THE onResume() function of your fragment (in this example it's "finalMenuFragment") like so :

 new Handler().post(new Runnable() {        public void run() {            mDrawerLayout.closeDrawer(mFragmentContainerView);        }    });

Again I know it seems stupid to post a Runnable but it makes the close animation smooth.

This way, the drawer will close as fast as it can if you want smooth animations and if your fragment has not a lot of views in it, it will close faster and still without lag.

I would like some feedback on this if somebody tested this solution, hope it helps !