show quota for server without quota-unlimited info capability

build.gradle

@@ -33,7 +33,7 @@ dependencies {
     /// dependencies for app building
     compile name: 'touch-image-view'
 
-    compile 'com.github.nextcloud:android-library:1.0.4'
+    compile 'com.github.nextcloud:android-library:1.0.6'
     compile "com.android.support:support-v4:${supportLibraryVersion}"
     compile "com.android.support:design:${supportLibraryVersion}"
     compile 'com.jakewharton:disklrucache:2.0.2'

src/com/owncloud/android/ui/activity/DrawerActivity.java

@@ -587,19 +587,33 @@ public abstract class DrawerActivity extends ToolbarActivity implements DisplayU
                         AccountUtils.getCurrentOwnCloudAccount(DrawerActivity.this), DrawerActivity.this);
 
                 if (result.isSuccess() && result.getData() != null) {
-                    RemoteGetUserQuotaOperation.Quota quota = (RemoteGetUserQuotaOperation.Quota) result.getData().get
-                            (0);
+                    final RemoteGetUserQuotaOperation.Quota quota =
+                            (RemoteGetUserQuotaOperation.Quota) result.getData().get(0);
 
                     final long used = quota.getUsed();
                     final long total = quota.getTotal();
                     final int relative = (int) Math.ceil(quota.getRelative());
+                    final long quotaValue = quota.getQuota();
 
                     runOnUiThread(new Runnable() {
                         @Override
                         public void run() {
-                            if (mQuotaView != null) {
-                                setQuotaInformation(used,total,relative);
+                            if (quotaValue > 0
+                                    || quotaValue == RemoteGetUserQuotaOperation.QUOTA_LIMIT_INFO_NOT_AVAILABLE) {
+                                /**
+                                 * show quota in case
+                                 * it is available and calculated (> 0) or
+                                 * in case of legacy servers (==QUOTA_LIMIT_INFO_NOT_AVAILABLE)
+                                 */
+                                setQuotaInformation(used, total, relative);
                             } else {
+                                /**
+                                 * quotaValue < 0 means special cases like
+                                 * {@link RemoteGetUserQuotaOperation.SPACE_NOT_COMPUTED},
+                                 * {@link RemoteGetUserQuotaOperation.SPACE_UNKNOWN} or
+                                 * {@link RemoteGetUserQuotaOperation.SPACE_UNLIMITED}
+                                 * thus don't display any quota information.
+                                 */
                                 showQuota(false);
                             }
                         }