Merge pull request #46 from Metaxa007/feature/alert-bug-on-ipad

Fix save-alert on iPad.

Author: TomTasche

OpenDocumentReader/DocumentViewController.swift

@@ -219,12 +219,17 @@ class DocumentViewController: UIViewController, DocumentDelegate {
     }
 
     func showToast(controller: UIViewController, message : String, seconds: Double, color: UIColor? = .gray, completion: (() -> Void)? = nil) {
-        let alert = UIAlertController(title: nil, message: message, preferredStyle: .actionSheet)
-        // TODO: fix text invisible on iPad: https://github.com/TomTasche/OpenDocument.ios/issues/42
-        //alert.view.backgroundColor = color
+        let alert: UIAlertController!
+        
+        if UIDevice.current.userInterfaceIdiom == .pad {
+            alert = UIAlertController(title: nil, message: message, preferredStyle: .alert)
+        } else {
+            alert = UIAlertController(title: nil, message: message, preferredStyle: .actionSheet)
+        }
+
+        alert.view.backgroundColor = color
         alert.view.layer.cornerRadius = 15
 
-        alert.popoverPresentationController?.sourceView = menuButton.value(forKey: "view") as? UIView
         controller.present(alert, animated: true)
 
         DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + seconds) {