Programming Tutorials

This code demonstrates how to resize an ImageView programmatically in an Android application written in Kotlin. It allows the user to click a button and randomly resize the image displayed in the ImageView. The code includes three parts: MainActivity.kt: This file contains the main logic for the activity. It loads an image from the assets folder, displays it on the ImageView, and implements a button click listener to resize the ImageView with random dimensions. Extension functions: The code defines three extension functions: resize : This function allows resizing the ImageView by setting new width and height values for its LayoutParams. assetsToBitmap : This function retrieves a Bitmap image from the app's assets folder. dpToPixels : This function converts a value in dp (density-independent pixels) to its equivalent pixel size based on the device's screen density. activity_main.xml: This file defines the layout for the activity, including the ImageView, a butto...

Introduction This code demonstrates how to programmatically create an ImageView and add it to a ConstraintLayout in Android. An ImageView is a fundamental view for displaying images and can be used in various layouts. Explanation Import Statements: The code begins by importing essential libraries like Context, android.graphics, Bundle, View, ImageView, AppCompatActivity, ConstraintLayout, etc. These libraries provide the functionalities used throughout the program. MainActivity Class: The MainActivity class inherits from AppCompatActivity, which serves as the foundation class for most activities in Android. The onCreate() method acts as the entry point of the activity and is invoked when the activity is first created. Create ImageView Programmatically: Inside the onCreate() method, an ImageView is constructed programmatically using the applicationContext.createImageView() extension function. This function generates an ImageView instance, sets its layout parameters, and ...