diff --git a/Example/MainWindow.xib b/Example/MainWindow.xib
index 610ac8e..71c2775 100644
--- a/Example/MainWindow.xib
+++ b/Example/MainWindow.xib
@@ -1,14 +1,14 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <archive type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="8.00">
 	<data>
-		<int key="IBDocument.SystemTarget">1552</int>
-		<string key="IBDocument.SystemVersion">12E55</string>
-		<string key="IBDocument.InterfaceBuilderVersion">3084</string>
-		<string key="IBDocument.AppKitVersion">1187.39</string>
-		<string key="IBDocument.HIToolboxVersion">626.00</string>
+		<int key="IBDocument.SystemTarget">2048</int>
+		<string key="IBDocument.SystemVersion">14E46</string>
+		<string key="IBDocument.InterfaceBuilderVersion">7706</string>
+		<string key="IBDocument.AppKitVersion">1348.17</string>
+		<string key="IBDocument.HIToolboxVersion">758.70</string>
 		<object class="NSMutableDictionary" key="IBDocument.PluginVersions">
 			<string key="NS.key.0">com.apple.InterfaceBuilder.IBCocoaTouchPlugin</string>
-			<string key="NS.object.0">2083</string>
+			<string key="NS.object.0">7703</string>
 		</object>
 		<array key="IBDocument.IntegratedClassDependencies">
 			<string>IBProxyObject</string>
@@ -53,15 +53,15 @@
 						<int key="IBUIContentHorizontalAlignment">0</int>
 						<int key="IBUIContentVerticalAlignment">0</int>
 						<int key="IBUIButtonType">1</int>
-						<string key="IBUINormalTitle">Sample Alert example</string>
-						<object class="NSColor" key="IBUIHighlightedTitleColor" id="34193676">
-							<int key="NSColorSpace">3</int>
-							<bytes key="NSWhite">MQA</bytes>
-						</object>
 						<object class="NSColor" key="IBUINormalTitleColor" id="862019999">
 							<int key="NSColorSpace">1</int>
 							<bytes key="NSRGB">MC4xOTYwNzg0MzE0IDAuMzA5ODAzOTIxNiAwLjUyMTU2ODYyNzUAA</bytes>
 						</object>
+						<object class="NSColor" key="IBUIHighlightedTitleColor" id="34193676">
+							<int key="NSColorSpace">3</int>
+							<bytes key="NSWhite">MQA</bytes>
+						</object>
+						<string key="IBUINormalTitle">Sample Alert example</string>
 						<object class="NSColor" key="IBUINormalTitleShadowColor" id="823323164">
 							<int key="NSColorSpace">3</int>
 							<bytes key="NSWhite">MC41AA</bytes>
@@ -91,9 +91,9 @@
 						<int key="IBUIContentHorizontalAlignment">0</int>
 						<int key="IBUIContentVerticalAlignment">0</int>
 						<int key="IBUIButtonType">1</int>
-						<string key="IBUINormalTitle">Ice cream Alert example</string>
-						<reference key="IBUIHighlightedTitleColor" ref="34193676"/>
 						<reference key="IBUINormalTitleColor" ref="862019999"/>
+						<reference key="IBUIHighlightedTitleColor" ref="34193676"/>
+						<string key="IBUINormalTitle">Ice cream Alert example</string>
 						<reference key="IBUINormalTitleShadowColor" ref="823323164"/>
 						<reference key="IBUIFontDescription" ref="95042656"/>
 						<reference key="IBUIFont" ref="600433790"/>
@@ -111,9 +111,28 @@
 						<int key="IBUIContentHorizontalAlignment">0</int>
 						<int key="IBUIContentVerticalAlignment">0</int>
 						<int key="IBUIButtonType">1</int>
-						<string key="IBUINormalTitle">Timed Alert example</string>
+						<reference key="IBUINormalTitleColor" ref="862019999"/>
 						<reference key="IBUIHighlightedTitleColor" ref="34193676"/>
+						<string key="IBUINormalTitle">Timed Alert example</string>
+						<reference key="IBUINormalTitleShadowColor" ref="823323164"/>
+						<reference key="IBUIFontDescription" ref="95042656"/>
+						<reference key="IBUIFont" ref="600433790"/>
+					</object>
+					<object class="IBUIButton" id="894322984">
+						<reference key="NSNextResponder" ref="538351832"/>
+						<int key="NSvFlags">1316</int>
+						<object class="NSPSMatrix" key="NSFrameMatrix"/>
+						<string key="NSFrame">{{20, 174}, {280, 44}}</string>
+						<reference key="NSSuperview" ref="538351832"/>
+						<reference key="NSWindow"/>
+						<bool key="IBUIOpaque">NO</bool>
+						<string key="targetRuntimeIdentifier">IBCocoaTouchFramework</string>
+						<int key="IBUIContentHorizontalAlignment">0</int>
+						<int key="IBUIContentVerticalAlignment">0</int>
+						<int key="IBUIButtonType">1</int>
 						<reference key="IBUINormalTitleColor" ref="862019999"/>
+						<reference key="IBUIHighlightedTitleColor" ref="34193676"/>
+						<string key="IBUINormalTitle">Textfield with validation example</string>
 						<reference key="IBUINormalTitleShadowColor" ref="823323164"/>
 						<reference key="IBUIFontDescription" ref="95042656"/>
 						<reference key="IBUIFont" ref="600433790"/>
@@ -125,7 +144,6 @@
 						<string key="NSFrame">{{20, 293}, {280, 45}}</string>
 						<reference key="NSSuperview" ref="538351832"/>
 						<reference key="NSWindow"/>
-						<reference key="NSNextKeyView"/>
 						<bool key="IBUIOpaque">NO</bool>
 						<bool key="IBUIClipsSubviews">YES</bool>
 						<int key="IBUIContentMode">7</int>
@@ -144,10 +162,11 @@
 						<int key="IBUITextAlignment">1</int>
 						<object class="IBUIFontDescription" key="IBUIFontDescription">
 							<int key="type">1</int>
+							<int key="weightCategory">0</int>
 							<double key="pointSize">17</double>
 						</object>
 						<object class="NSFont" key="IBUIFont">
-							<string key="NSName">Helvetica</string>
+							<string key="NSName">HelveticaNeue</string>
 							<double key="NSSize">17</double>
 							<int key="NSfFlags">16</int>
 						</object>
@@ -155,7 +174,7 @@
 					</object>
 				</array>
 				<object class="NSPSMatrix" key="NSFrameMatrix"/>
-				<string key="NSFrameSize">{320, 460}</string>
+				<string key="NSFrame">{{0, 20}, {320, 460}}</string>
 				<reference key="NSSuperview"/>
 				<reference key="NSWindow"/>
 				<reference key="NSNextKeyView" ref="1042329230"/>
@@ -166,13 +185,17 @@
 				<bool key="IBUIOpaque">NO</bool>
 				<bool key="IBUIClearsContextBeforeDrawing">NO</bool>
 				<object class="IBUISimulatedStatusBarMetrics" key="IBUISimulatedStatusBarMetrics"/>
+				<object class="IBUISimulatedSizeMetrics" key="IBUISimulatedDestinationMetrics">
+					<string key="IBUISimulatedSizeMetricsClass">IBUISimulatedFreeformSizeMetricsSentinel</string>
+					<string key="IBUIDisplayName">Freeform</string>
+				</object>
 				<string key="targetRuntimeIdentifier">IBCocoaTouchFramework</string>
 				<bool key="IBUIResizesToFullScreen">YES</bool>
 			</object>
 		</array>
 		<object class="IBObjectContainer" key="IBDocument.Objects">
 			<bool key="usesAutoincrementingIDs">NO</bool>
-			<array class="NSMutableArray" key="connectionRecords">
+			<array key="connectionRecords">
 				<object class="IBConnectionRecord">
 					<object class="IBCocoaTouchOutletConnection" key="connection">
 						<string key="label">delegate</string>
@@ -224,6 +247,15 @@
 					</object>
 					<string key="id">21</string>
 				</object>
+				<object class="IBConnectionRecord">
+					<object class="IBCocoaTouchEventConnection" key="connection">
+						<string key="label">showAlert4WithTextField</string>
+						<reference key="source" ref="894322984"/>
+						<reference key="destination" ref="214709478"/>
+						<int key="IBEventType">7</int>
+					</object>
+					<string key="id">6UZ-Mw-lch</string>
+				</object>
 			</array>
 			<object class="IBMutableOrderedSet" key="objectRecords">
 				<array key="orderedObjects">
@@ -257,6 +289,7 @@
 							<reference ref="772694246"/>
 							<reference ref="688083443"/>
 							<reference ref="841852568"/>
+							<reference ref="894322984"/>
 						</array>
 						<reference key="parent" ref="0"/>
 					</object>
@@ -280,6 +313,11 @@
 						<reference key="object" ref="841852568"/>
 						<reference key="parent" ref="538351832"/>
 					</object>
+					<object class="IBObjectRecord">
+						<string key="id">7jn-vQ-IYZ</string>
+						<reference key="object" ref="894322984"/>
+						<reference key="parent" ref="538351832"/>
+					</object>
 				</array>
 			</object>
 			<dictionary class="NSMutableDictionary" key="flattenedProperties">
@@ -301,12 +339,16 @@
 				<string key="19.IBPluginDependency">com.apple.InterfaceBuilder.IBCocoaTouchPlugin</string>
 				<reference key="19.IBUserGuides" ref="0"/>
 				<boolean value="NO" key="19.showNotes"/>
+				<reference key="2.IBNSViewMetadataGestureRecognizers" ref="0"/>
 				<string key="2.IBPluginDependency">com.apple.InterfaceBuilder.IBCocoaTouchPlugin</string>
 				<reference key="2.IBUserGuides" ref="0"/>
 				<boolean value="NO" key="2.showNotes"/>
 				<string key="3.CustomClassName">OHAlertsExampleAppDelegate</string>
 				<string key="3.IBPluginDependency">com.apple.InterfaceBuilder.IBCocoaTouchPlugin</string>
 				<boolean value="NO" key="3.showNotes"/>
+				<string key="7jn-vQ-IYZ.IBPluginDependency">com.apple.InterfaceBuilder.IBCocoaTouchPlugin</string>
+				<reference key="7jn-vQ-IYZ.IBUserGuides" ref="0"/>
+				<boolean value="NO" key="7jn-vQ-IYZ.showNotes"/>
 			</dictionary>
 			<dictionary class="NSMutableDictionary" key="unlocalizedProperties"/>
 			<nil key="activeLocalization"/>
@@ -353,23 +395,140 @@
 					</dictionary>
 					<object class="IBClassDescriptionSource" key="sourceIdentifier">
 						<string key="majorKey">IBProjectSource</string>
-						<string key="minorKey">./Classes/OHAlertsExampleAppDelegate.h</string>
+						<string key="minorKey">../OHAlertsExampleAppDelegate.h</string>
+					</object>
+				</object>
+				<object class="IBPartialClassDescription">
+					<string key="className">OHAlertsExampleAppDelegate</string>
+					<dictionary class="NSMutableDictionary" key="actions">
+						<string key="showAlert1">id</string>
+						<string key="showAlert2">id</string>
+						<string key="showAlert3">id</string>
+						<string key="showAlert4WithTextField">id</string>
+					</dictionary>
+					<dictionary class="NSMutableDictionary" key="actionInfosByName">
+						<object class="IBActionInfo" key="showAlert1">
+							<string key="name">showAlert1</string>
+							<string key="candidateClassName">id</string>
+						</object>
+						<object class="IBActionInfo" key="showAlert2">
+							<string key="name">showAlert2</string>
+							<string key="candidateClassName">id</string>
+						</object>
+						<object class="IBActionInfo" key="showAlert3">
+							<string key="name">showAlert3</string>
+							<string key="candidateClassName">id</string>
+						</object>
+						<object class="IBActionInfo" key="showAlert4WithTextField">
+							<string key="name">showAlert4WithTextField</string>
+							<string key="candidateClassName">id</string>
+						</object>
+					</dictionary>
+					<object class="IBClassDescriptionSource" key="sourceIdentifier">
+						<string key="majorKey">IBProjectSource</string>
+						<string key="minorKey">../OHAlertsExampleAppDelegate.m</string>
+					</object>
+				</object>
+			</array>
+			<array class="NSMutableArray" key="referencedPartialClassDescriptionsV3.2+">
+				<object class="IBPartialClassDescription">
+					<string key="className">UIApplication</string>
+					<string key="superclassName">UIResponder</string>
+					<object class="IBClassDescriptionSource" key="sourceIdentifier">
+						<string key="majorKey">IBFrameworkSource</string>
+						<string key="minorKey">UIKit.framework/Headers/UIApplication.h</string>
+					</object>
+				</object>
+				<object class="IBPartialClassDescription">
+					<string key="className">UIButton</string>
+					<string key="superclassName">UIControl</string>
+					<object class="IBClassDescriptionSource" key="sourceIdentifier">
+						<string key="majorKey">IBFrameworkSource</string>
+						<string key="minorKey">UIKit.framework/Headers/UIButton.h</string>
+					</object>
+				</object>
+				<object class="IBPartialClassDescription">
+					<string key="className">UIControl</string>
+					<string key="superclassName">UIView</string>
+					<object class="IBClassDescriptionSource" key="sourceIdentifier">
+						<string key="majorKey">IBFrameworkSource</string>
+						<string key="minorKey">UIKit.framework/Headers/UIControl.h</string>
+					</object>
+				</object>
+				<object class="IBPartialClassDescription">
+					<string key="className">UIGestureRecognizer</string>
+					<string key="superclassName">NSObject</string>
+					<object class="IBClassDescriptionSource" key="sourceIdentifier">
+						<string key="majorKey">IBFrameworkSource</string>
+						<string key="minorKey">UIKit.framework/Headers/UIGestureRecognizer.h</string>
+					</object>
+				</object>
+				<object class="IBPartialClassDescription">
+					<string key="className">UILabel</string>
+					<string key="superclassName">UIView</string>
+					<object class="IBClassDescriptionSource" key="sourceIdentifier">
+						<string key="majorKey">IBFrameworkSource</string>
+						<string key="minorKey">UIKit.framework/Headers/UILabel.h</string>
+					</object>
+				</object>
+				<object class="IBPartialClassDescription">
+					<string key="className">UIResponder</string>
+					<string key="superclassName">NSObject</string>
+					<object class="IBClassDescriptionSource" key="sourceIdentifier">
+						<string key="majorKey">IBFrameworkSource</string>
+						<string key="minorKey">UIKit.framework/Headers/UIResponder.h</string>
+					</object>
+				</object>
+				<object class="IBPartialClassDescription">
+					<string key="className">UISearchBar</string>
+					<string key="superclassName">UIView</string>
+					<object class="IBClassDescriptionSource" key="sourceIdentifier">
+						<string key="majorKey">IBFrameworkSource</string>
+						<string key="minorKey">UIKit.framework/Headers/UISearchBar.h</string>
+					</object>
+				</object>
+				<object class="IBPartialClassDescription">
+					<string key="className">UISearchDisplayController</string>
+					<string key="superclassName">NSObject</string>
+					<object class="IBClassDescriptionSource" key="sourceIdentifier">
+						<string key="majorKey">IBFrameworkSource</string>
+						<string key="minorKey">UIKit.framework/Headers/UISearchDisplayController.h</string>
+					</object>
+				</object>
+				<object class="IBPartialClassDescription">
+					<string key="className">UIView</string>
+					<string key="superclassName">UIResponder</string>
+					<object class="IBClassDescriptionSource" key="sourceIdentifier">
+						<string key="majorKey">IBFrameworkSource</string>
+						<string key="minorKey">UIKit.framework/Headers/UIView.h</string>
+					</object>
+				</object>
+				<object class="IBPartialClassDescription">
+					<string key="className">UIViewController</string>
+					<string key="superclassName">UIResponder</string>
+					<object class="IBClassDescriptionSource" key="sourceIdentifier">
+						<string key="majorKey">IBFrameworkSource</string>
+						<string key="minorKey">UIKit.framework/Headers/UIViewController.h</string>
+					</object>
+				</object>
+				<object class="IBPartialClassDescription">
+					<string key="className">UIWindow</string>
+					<string key="superclassName">UIView</string>
+					<object class="IBClassDescriptionSource" key="sourceIdentifier">
+						<string key="majorKey">IBFrameworkSource</string>
+						<string key="minorKey">UIKit.framework/Headers/UIWindow.h</string>
 					</object>
 				</object>
 			</array>
 		</object>
 		<int key="IBDocument.localizationMode">0</int>
 		<string key="IBDocument.TargetRuntimeIdentifier">IBCocoaTouchFramework</string>
-		<object class="NSMutableDictionary" key="IBDocument.PluginDeclaredDependencyDefaults">
-			<string key="NS.key.0">com.apple.InterfaceBuilder.CocoaTouchPlugin.iPhoneOS</string>
-			<real value="1552" key="NS.object.0"/>
-		</object>
+		<bool key="IBDocument.previouslyAttemptedUpgradeToXcode5">NO</bool>
 		<object class="NSMutableDictionary" key="IBDocument.PluginDeclaredDevelopmentDependencies">
 			<string key="NS.key.0">com.apple.InterfaceBuilder.CocoaTouchPlugin.InterfaceBuilder3</string>
 			<integer value="4600" key="NS.object.0"/>
 		</object>
 		<bool key="IBDocument.PluginDeclaredDependenciesTrackSystemTargetVersion">YES</bool>
 		<int key="IBDocument.defaultPropertyAccessControl">3</int>
-		<string key="IBCocoaTouchPluginVersion">2083</string>
 	</data>
 </archive>
diff --git a/Example/OHAlertsExampleAppDelegate.h b/Example/OHAlertsExampleAppDelegate.h
index b4dd50b..b5bc3bf 100644
--- a/Example/OHAlertsExampleAppDelegate.h
+++ b/Example/OHAlertsExampleAppDelegate.h
@@ -16,6 +16,7 @@
 -(IBAction)showAlert1;
 -(IBAction)showAlert2;
 -(IBAction)showAlert3;
+-(IBAction)showAlert4WithTextField;
 
 @end
 
diff --git a/Example/OHAlertsExampleAppDelegate.m b/Example/OHAlertsExampleAppDelegate.m
index da1a066..ef3a90e 100644
--- a/Example/OHAlertsExampleAppDelegate.m
+++ b/Example/OHAlertsExampleAppDelegate.m
@@ -85,6 +85,19 @@ -(IBAction)showAlert3
 }
 
 
+-(IBAction)showAlert4WithTextField
+{
+    OHAlertView *ohav = [[OHAlertView alloc] initWithTitle:@"Text field" message:@"Email:" cancelButton:@"Cancel" otherButtons:@[@"OK"] buttonHandler:^(OHAlertView *alert, NSInteger buttonIndex) {
+        
+    }];
+    
+    [ohav setShouldEnableFirstButton:^BOOL(OHAlertView* alert) {
+        NSString *email = [alert textFieldAtIndex:0].text;
+        return (email && email.length > 0);
+    }];
+    ohav.alertViewStyle = UIAlertViewStylePlainTextInput;
+    [ohav show];
+}
 
 /////////////////////////////////////////////////////////////////////////////
 // MARK: -
diff --git a/OHAlertView/OHAlertView.h b/OHAlertView/OHAlertView.h
index 475c58f..f82ada5 100644
--- a/OHAlertView/OHAlertView.h
+++ b/OHAlertView/OHAlertView.h
@@ -12,7 +12,10 @@
 @interface OHAlertView : UIAlertView
 
 typedef void(^OHAlertViewButtonHandler)(OHAlertView* alert, NSInteger buttonIndex);
+typedef BOOL (^OHShouldEnableFirstOtherButton)(OHAlertView *alert);
 @property (nonatomic, copy) OHAlertViewButtonHandler buttonHandler;
+/** block called by delegate to enable or not the first button, generally 'ok' */
+@property (nonatomic, copy) OHShouldEnableFirstOtherButton shouldEnableFirstButton;
 
 /////////////////////////////////////////////////////////////////////////////
 
diff --git a/OHAlertView/OHAlertView.m b/OHAlertView/OHAlertView.m
index 24ef8fd..d61d193 100644
--- a/OHAlertView/OHAlertView.m
+++ b/OHAlertView/OHAlertView.m
@@ -172,4 +172,14 @@ -(void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)b
 	}
 }
 
+-(BOOL)alertViewShouldEnableFirstOtherButton:(UIAlertView *)alertView {
+    BOOL enable;
+    if (self.shouldEnableFirstButton) {
+        enable = self.shouldEnableFirstButton((OHAlertView *)alertView);
+    } else {
+        enable = YES;
+    }
+    return enable;
+}
+
 @end