Created
March 18, 2013 22:37
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Easy AutoLayout help from Frank
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| My View Controller : | |
| using System; | |
| using System.Drawing; | |
| using MonoTouch.Foundation; | |
| using MonoTouch.UIKit; | |
| using Async.iOS; | |
| namespace FrankAutoLayout | |
| { | |
| public partial class FrankAutoLayoutViewController : UIViewController | |
| { | |
| int ButtonWidth = 100; | |
| int VPadding = 20; | |
| int HPadding = 20; | |
| public FrankAutoLayoutViewController () : base ("FrankAutoLayoutViewController", null) | |
| { | |
| } | |
| public override void DidReceiveMemoryWarning () | |
| { | |
| // Releases the view if it doesn't have a superview. | |
| base.DidReceiveMemoryWarning (); | |
| // Release any cached data, images, etc that aren't in use. | |
| } | |
| public override void ViewDidLoad () | |
| { | |
| base.ViewDidLoad (); | |
| // this.LayoutWithConstraints(); | |
| View.BackgroundColor = UIColor.Red; | |
| this.LayoutWithEase(); | |
| } | |
| public override void ViewWillAppear (bool animated) | |
| { | |
| base.ViewWillAppear (animated); | |
| } | |
| void LayoutWithEase () | |
| { | |
| View.ConstrainLayout (() => | |
| button.Frame.Width == ButtonWidth && | |
| button.Frame.Right == View.Frame.Right - HPadding && | |
| button.Frame.Top == View.Frame.Top + VPadding && | |
| text.Frame.Left == View.Frame.Left + HPadding && | |
| text.Frame.Right == button.Frame.Left - HPadding && | |
| text.Frame.Top == button.Frame.Top | |
| ); | |
| } | |
| void LayoutWithConstraints () | |
| { | |
| // Set button width | |
| View.AddConstraint (NSLayoutConstraint.Create ( | |
| button, NSLayoutAttribute.Width, | |
| NSLayoutRelation.Equal, | |
| null, NSLayoutAttribute.NoAttribute, | |
| 0, ButtonWidth)); | |
| // Set button top | |
| View.AddConstraint (NSLayoutConstraint.Create ( | |
| button, NSLayoutAttribute.Top, | |
| NSLayoutRelation.Equal, | |
| View, NSLayoutAttribute.Top, | |
| 1, VPadding)); | |
| // Set button right | |
| View.AddConstraint (NSLayoutConstraint.Create ( | |
| button, NSLayoutAttribute.Right, | |
| NSLayoutRelation.Equal, | |
| View, NSLayoutAttribute.Right, | |
| 1, -HPadding)); | |
| // Set text left | |
| View.AddConstraint (NSLayoutConstraint.Create ( | |
| text, NSLayoutAttribute.Left, | |
| NSLayoutRelation.Equal, | |
| View, NSLayoutAttribute.Left, | |
| 1, HPadding)); | |
| // Set text right | |
| View.AddConstraint (NSLayoutConstraint.Create ( | |
| text, NSLayoutAttribute.Right, | |
| NSLayoutRelation.Equal, | |
| button, NSLayoutAttribute.Left, | |
| 1, -HPadding)); | |
| // Set text top | |
| View.AddConstraint (NSLayoutConstraint.Create ( | |
| text, NSLayoutAttribute.Top, | |
| NSLayoutRelation.Equal, | |
| button, NSLayoutAttribute.Top, | |
| 1, 0)); | |
| } | |
| } | |
| } | |
| Unhandled Exception: | |
| System.NotSupportedException: Unknown node type Convert | |
| at Async.iOS.Layout.GetRight (System.Linq.Expressions.Expression expr) [0x00196] in /Volumes/Tapstic/Xamarin/Devel/Experiment/FrankAutoLayout/FrankAutoLayout/Layout.cs:115 | |
| at Async.iOS.Layout.CompileConstraint (System.Linq.Expressions.BinaryExpression expr) [0x00067] in /Volumes/Tapstic/Xamarin/Devel/Experiment/FrankAutoLayout/FrankAutoLayout/Layout.cs:50 | |
| at System.Linq.Enumerable+<CreateSelectIterator>c__Iterator1B`2[System.Linq.Expressions.BinaryExpression,MonoTouch.UIKit.NSLayoutConstraint].MoveNext () [0x00059] in /Developer/MonoTouch/Source/mono/mcs/class/System.Core/System.Linq/Enumerable.cs:2269 | |
| at System.Linq.Enumerable.ToArray[NSLayoutConstraint] (IEnumerable`1 source) [0x0007c] in /Developer/MonoTouch/Source/mono/mcs/class/System.Core/System.Linq/Enumerable.cs:2899 | |
| at Async.iOS.Layout.ConstrainLayout (MonoTouch.UIKit.UIView view, System.Linq.Expressions.Expression`1 constraints) [0x00014] in /Volumes/Tapstic/Xamarin/Devel/Experiment/FrankAutoLayout/FrankAutoLayout/Layout.cs:27 | |
| at FrankAutoLayout.FrankAutoLayoutViewController.LayoutWithEase () [0x00000] in /Volumes/Tapstic/Xamarin/Devel/Experiment/FrankAutoLayout/FrankAutoLayout/FrankAutoLayoutViewController.cs:44 | |
| at FrankAutoLayout.FrankAutoLayoutViewController.ViewDidLoad () [0x00016] in /Volumes/Tapstic/Xamarin/Devel/Experiment/FrankAutoLayout/FrankAutoLayout/FrankAutoLayoutViewController.cs:35 | |
| at (wrapper managed-to-native) MonoTouch.ObjCRuntime.Messaging:void_objc_msgSend (intptr,intptr) | |
| at MonoTouch.UIKit.UIWindow.MakeKeyAndVisible () [0x00012] in /Developer/MonoTouch/Source/monotouch/src/UIKit/UIWindow.g.cs:128 | |
| at FrankAutoLayout.AppDelegate.FinishedLaunching (MonoTouch.UIKit.UIApplication app, MonoTouch.Foundation.NSDictionary options) [0x00031] in /Volumes/Tapstic/Xamarin/Devel/Experiment/FrankAutoLayout/FrankAutoLayout/AppDelegate.cs:33 | |
| at (wrapper managed-to-native) MonoTouch.UIKit.UIApplication:UIApplicationMain (int,string[],intptr,intptr) | |
| at MonoTouch.UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x0004d] in /Developer/MonoTouch/Source/monotouch/src/UIKit/UIApplication.cs:38 | |
| at FrankAutoLayout.Application.Main (System.String[] args) [0x00000] in /Volumes/Tapstic/Xamarin/Devel/Experiment/FrankAutoLayout/FrankAutoLayout/Main.cs:17 | |
| 2013-03-18 15:35:22.301 FrankAutoLayout[26413:c07] Unhandled managed exception: Unknown node type Convert (System.NotSupportedException) | |
| at Async.iOS.Layout.GetRight (System.Linq.Expressions.Expression expr) [0x00196] in /Volumes/Tapstic/Xamarin/Devel/Experiment/FrankAutoLayout/FrankAutoLayout/Layout.cs:115 | |
| at Async.iOS.Layout.CompileConstraint (System.Linq.Expressions.BinaryExpression expr) [0x00067] in /Volumes/Tapstic/Xamarin/Devel/Experiment/FrankAutoLayout/FrankAutoLayout/Layout.cs:50 | |
| at System.Linq.Enumerable+<CreateSelectIterator>c__Iterator1B`2[System.Linq.Expressions.BinaryExpression,MonoTouch.UIKit.NSLayoutConstraint].MoveNext () [0x00059] in /Developer/MonoTouch/Source/mono/mcs/class/System.Core/System.Linq/Enumerable.cs:2269 | |
| at System.Linq.Enumerable.ToArray[NSLayoutConstraint] (IEnumerable`1 source) [0x0007c] in /Developer/MonoTouch/Source/mono/mcs/class/System.Core/System.Linq/Enumerable.cs:2899 | |
| at Async.iOS.Layout.ConstrainLayout (MonoTouch.UIKit.UIView view, System.Linq.Expressions.Expression`1 constraints) [0x00014] in /Volumes/Tapstic/Xamarin/Devel/Experiment/FrankAutoLayout/FrankAutoLayout/Layout.cs:27 | |
| at FrankAutoLayout.FrankAutoLayoutViewController.LayoutWithEase () [0x00000] in /Volumes/Tapstic/Xamarin/Devel/Experiment/FrankAutoLayout/FrankAutoLayout/FrankAutoLayoutViewController.cs:44 | |
| at FrankAutoLayout.FrankAutoLayoutViewController.ViewDidLoad () [0x00016] in /Volumes/Tapstic/Xamarin/Devel/Experiment/FrankAutoLayout/FrankAutoLayout/FrankAutoLayoutViewController.cs:35 | |
| at (wrapper managed-to-native) MonoTouch.ObjCRuntime.Messaging:void_objc_msgSend (intptr,intptr) | |
| at MonoTouch.UIKit.UIWindow.MakeKeyAndVisible () [0x00012] in /Developer/MonoTouch/Source/monotouch/src/UIKit/UIWindow.g.cs:128 | |
| at FrankAutoLayout.AppDelegate.FinishedLaunching (MonoTouch.UIKit.UIApplication app, MonoTouch.Foundation.NSDictionary options) [0x00031] in /Volumes/Tapstic/Xamarin/Devel/Experiment/FrankAutoLayout/FrankAutoLayout/AppDelegate.cs:33 | |
| at (wrapper managed-to-native) MonoTouch.UIKit.UIApplication:UIApplicationMain (int,string[],intptr,intptr) | |
| at MonoTouch.UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x0004d] in /Developer/MonoTouch/Source/monotouch/src/UIKit/UIApplication.cs:38 | |
| at FrankAutoLayout.Application.Main (System.String[] args) [0x00000] in /Volumes/Tapstic/Xamarin/Devel/Experiment/FrankAutoLayout/FrankAutoLayout/Main.cs:17 | |
| mono-rt: Stacktrace: |
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