One of the most important parts is the user interface, as it is the most visible part of an app. When we create apps for Android devices, sometimes we may need to create custom views.
Creating a new UI control involves creating a new type, inheriting either directly or indirectly from one of the View types. Here's how it's done:
If we want to create more advanced button control, we must create a new type inheriting from the
Buttontype. We also need to ensure that the namespace is user friendly as it will be used in the layout files:namespace XamarinCookbook.Views { public class TimedButton : Button { } }
Now we can implement the functionality that this button provides:
public int Interval { get; set; } private async void OnClicked(object sender, EventArgs e) { // disable the button for several seconds if (Interval > 0) { Enabled = false; await Task.Delay(Interval * 1000); Enabled = true; } }As this control can be created...