10 Practical Examples of Higher-Order Functions in Android Development
<p>Kotlin is a modern programming language that has become increasingly popular due to its expressiveness, conciseness, and versatility. One of its key features is the support for higher-order functions, which allow you to write more concise and flexible code. A higher-order function is a function that takes one or more functions as arguments or returns a function as a result. In Kotlin, We can define higher-order functions using lambda expressions, anonymous functions, or named functions.</p>
<p><img alt="10 Practical examples of higher order function in kotlin and android" src="https://miro.medium.com/v2/resize:fit:630/1*w2eWfTHdeAJzACELU3EkWg.png" style="height:394px; width:700px" /></p>
<p>Here is how Android developers use higher-order functions in their projects:</p>
<p><strong>Event listeners:</strong><br />
Event listeners are a common use case for higher-order functions in Android development. For example, consider the following function that takes a higher-order function as an argument to handle a button click event:</p>
<pre>
fun View.onClick(action: () -> Unit) {
setOnClickListener { action() }
}</pre>
<p>This function extends the <code>View</code> class and takes a lambda expression that will be executed when the view is clicked. The <code>setOnClickListener</code> method is used to set the click listener for the view, and the lambda expression is executed when the click event occurs.</p>
<p>Using this function, we can easily handle button-click events in a concise and readable way</p>
<p><a href="https://medium.com/@summitkumar/10-practical-examples-of-higher-order-functions-in-android-development-84e9c6a4bdc3">Click Here</a></p>