Added a protection to support files that do not support oc_privatelink

Author: javiergonzper

Owncloud iOs Client/Tabs/FileTab/Share/ShareMainViewController.m

@@ -505,19 +505,24 @@ - (UITableViewCell *) getCellOfFileOrFolderInformationByTableView:(UITableView *
     shareFileCell.fileSize.hidden = self.sharedItem.isDirectory;
     shareFileCell.folderName.hidden = !self.sharedItem.isDirectory;
 
-    //Add long press event
-    UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(didLongPressPrivateLinkButton:)];
-   // longPress.minimumPressDuration = 3; //seconds
-    longPress.delegate = self;
-    [shareFileCell.privateLinkButton addGestureRecognizer:longPress];
-    
-    //Add tap event
-    UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(didTapPrivateLinkButton)];
-    tapGesture.numberOfTapsRequired = 1;
-    tapGesture.numberOfTouchesRequired = 1;
-    [shareFileCell.privateLinkButton addGestureRecognizer:tapGesture];
-    
-    shareFileCell.privateLinkButton.tag = -1;
+    if (self.sharedItem.ocPrivatelink && !([self.sharedItem.ocPrivatelink isEqual:@""])) {
+        //Add long press event
+        UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(didLongPressPrivateLinkButton:)];
+        // longPress.minimumPressDuration = 3; //seconds
+        longPress.delegate = self;
+        [shareFileCell.privateLinkButton addGestureRecognizer:longPress];
+        
+        //Add tap event
+        UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(didTapPrivateLinkButton)];
+        tapGesture.numberOfTapsRequired = 1;
+        tapGesture.numberOfTouchesRequired = 1;
+        [shareFileCell.privateLinkButton addGestureRecognizer:tapGesture];
+        
+        shareFileCell.privateLinkButton.tag = -1;
+    } else {
+        shareFileCell.privateLinkButton.hidden = true;
+        shareFileCell.privateLinkButton.enabled = false;
+    }
 
 
     if (self.sharedItem.isDirectory) {