Merge branch 'material_toolbar' of https://github.com/owncloud/android into material_...

diff --combined src/com/owncloud/android/ui/activity/FileActivity.java
index 154aa7d,f1508c2..80e9129
--- 1/src/com/owncloud/android/ui/activity/FileActivity.java
--- 2/src/com/owncloud/android/ui/activity/FileActivity.java
+++ b/src/com/owncloud/android/ui/activity/FileActivity.java
@@@ -315,12 -315,26 +315,26 @@@ public class FileActivity extends AppCo
          super.onBackPressed();
      }
  
+     /**
+      * checks if the drawer exists and is opened.
+      *
+      * @return <code>true</code> if the drawer is open, else <code>false</code>
+      */
      public boolean isDrawerOpen() {
-         return mDrawerLayout.isDrawerOpen(GravityCompat.START);
+         if(mDrawerLayout != null) {
+             return mDrawerLayout.isDrawerOpen(GravityCompat.START);
+         } else {
+             return false;
+         }
      }
  
+     /**
+      * closes the navigation drawer.
+      */
      public void closeNavDrawer() {
-         mDrawerLayout.closeDrawer(GravityCompat.START);
+         if(mDrawerLayout != null) {
+             mDrawerLayout.closeDrawer(GravityCompat.START);
+         }
      }
  
      protected void initDrawer(){
@@@ -349,7 -363,12 +363,7 @@@
  //        }
  
          // Display username in drawer
 -        Account account = AccountUtils.getCurrentOwnCloudAccount(getApplicationContext());
 -        if (account != null) {
 -            TextView username = (TextView) navigationDrawerLayout.findViewById(R.id.drawer_username);
 -            int lastAtPos = account.name.lastIndexOf("@");
 -            username.setText(account.name.substring(0, lastAtPos));
 -        }
 +        setUsernameInDrawer(navigationDrawerLayout, AccountUtils.getCurrentOwnCloudAccount(getApplicationContext()));
  
          // load slide menu items
          mDrawerTitles = getResources().getStringArray(R.array.drawer_items);
@@@ -416,21 -435,6 +430,21 @@@
      }
  
      /**
 +     * sets the given account name in the drawer in case the drawer is available. The account name
 +     * is shortened beginning from the @-sign in the username.
 +     *
 +     * @param navigationDrawerLayout the drawer layout to be used
 +     * @param account                the account to be set in the drawer
 +     */
 +    protected void setUsernameInDrawer(RelativeLayout navigationDrawerLayout, Account account) {
 +        if (navigationDrawerLayout != null && getAccount() != null) {
 +            TextView username = (TextView) navigationDrawerLayout.findViewById(R.id.drawer_username);
 +            int lastAtPos = account.name.lastIndexOf("@");
 +            username.setText(account.name.substring(0, lastAtPos));
 +        }
 +    }
 +
 +    /**
       * Updates title bar and home buttons (state and icon).
       *
       * Assumes that navigation drawer is NOT visible.