This is called when the user either touches the item Included in the event listener interfaces are the following callback methods: onClick() From View.OnClickListener. These methods will be called by the Android framework when the View to which the listener hasīeen registered is triggered by user interaction with the item in the UI. Event listenersĪn event listener is an interface in the View class that contains a singleĬallback method. In this case, you'll be able to define the default event behaviors for yourĬlass using the class event handlers. While you will more commonly use the event listeners to listen for user interaction, there mayĬome a time when you do want to extend a View class, in order to build a custom component.Ĭlass to make something more fancy. These interfaces,Ĭalled event listeners, are your ticket to capturing the user interaction with your UI. This is why the View class also containsĪ collection of nested interfaces with callbacks that you can much more easily define. In order to handle such an event would not be practical. However, in order to intercept this, you must extend The onTouchEvent() method is called on that object. For instance, when a View (such as a Button) is touched, These methods are called by the Android framework when the Within the various View classes that you'll use to compose your layout, you may notice several public callback The View class provides the means to do so. The specific View object that the user interacts with. When considering events within your user interface, the approach is to capture the events from On Android, there's more than one way to intercept the events from a user's interaction with your application.
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