- #Cannot detect button in koloda photo view how to
- #Cannot detect button in koloda photo view code
For more information, see Margin and Padding. The ImageButton class also has Margin and Padding properties that control the layout behavior of the ImageButton. This is the default value of the Aspect enumeration.
AspectFit - letterboxes the image (if necessary) so that the entire image fits into the ImageButton, with blank space added to the top/bottom or sides depending on whether the image is wide or tall. AspectFill - clips the image so that it fills the ImageButton while preserving the aspect ratio. This may result in the image being distorted. Fill - stretches the image to completely and exactly fill the ImageButton. The Aspect property can be set to one of the members of the Aspect enumeration: CornerRadius is the corner radius of the ImageButton. BorderWidth is the width of the border. BorderColor is the color of an area surrounding the ImageButton. Aspect is how the image will be scaled to fit the display area. In addition to the properties that ImageButton inherits from the View class, ImageButton also defines several properties that affect its appearance: Generally, the Clicked event is also fired at the same time as the Released event, but if the finger or mouse pointer slides away from the surface of the ImageButton before being released, the Clicked event might not occur.įor more information about these events, see Pressing and releasing the button in the Button guide. The Released event occurs when the finger or mouse button is released. The Pressed event occurs when a finger presses on a ImageButton, or a mouse button is pressed with the pointer positioned over the ImageButton. Pressing and releasing the ImageButtonīesides the Clicked event, ImageButton also defines Pressed and Released events. This approach is suitable in connection with data-binding, and particularly when implementing the Model-View-ViewModel (MVVM) architecture.įor more information about using the command interface, see Using the command interface in the Button guide. CommandParameter property of type Object. Command of type ICommand, an interface defined in the namespace. The ImageButton implements an alternative notification mechanism called the command or commanding interface. It is possible for an application to respond to ImageButton taps without handling the Clicked event. In those cases, the ImageButton should be disabled by setting its IsEnabled property to false. Sometimes an application is in a particular state where a particular ImageButton click is not a valid operation. Void OnImageButtonClicked(object sender, EventArgs e) The Clicked event is set to an event handler named OnImageButtonClicked that is located in the code-behind file: public partial class ImageButtonDemoPage : ContentPage The following example shows how to instantiate a ImageButton in XAML and handle its Clicked event: The ImageButton must have its IsEnabled property set to true to respond to taps. The event is fired when the finger or mouse button is released from the surface of the ImageButton. ImageButton defines a Clicked event that is fired when the user taps the ImageButton with a finger or mouse pointer. VerticalOptions = LayoutOptions.CenterAndExpand HorizontalOptions = LayoutOptions.Center, ImageButton imageButton = new ImageButton The following example shows how to create a page that is functionally equivalent to the previous XAML example, but entirely in C#: public class ImageButtonDemoPage : ContentPage While an ImageButton can load an animated GIF, it will only display the first frame of the GIF. For more information about ImageButton appearance, see ImageButton appearance. In this example it's set to a local file that will be loaded from each platform project, resulting in the following screenshots:īy default, the ImageButton is rectangular, but you can give it rounded corners by using the CornerRadius property. The Source property specifies the image that appears in the ImageButton. The following example shows how to instantiate a ImageButton in XAML: For more information about loading images from different sources, see Images in Xamarin.Forms.
ImageButton defines a Source property that should be set to the image to display in the button, with the image source being either a file, a URI, a resource, or a stream.
The code examples in this guide are taken from the FormsGallery sample. While the Button view defines an Image property, that allows you to display a image on the Button, this property is intended to be used when displaying a small icon next to the Button text.
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