iOS fixes

ios/robovm.properties

@@ -2,5 +2,5 @@ app.version=4.0
 app.id=io.anuke.mindustry
 app.mainclass=io.anuke.mindustry.IOSLauncher
 app.executable=IOSLauncher
-app.build=14
+app.build=17
 app.name=Mindustry

ios/src/io/anuke/mindustry/TextFieldDialogListener.java

@@ -26,6 +26,7 @@ public class TextFieldDialogListener {
         });
     }
 
+    @SuppressWarnings("deprecation")
     private static void show(TextField field, int maxLength){
 
         UIAlertViewDelegateAdapter delegate = new UIAlertViewDelegateAdapter() {