Programming Tutorials

Android Kotlin - EditText Password Validation (Breakdown) This code demonstrates password validation for an EditText field in an Android application written in Kotlin. Here's a breakdown of the functionalities: Layout and References: The activity_main.xml file defines the user interface with an EditText for password input and a TextView to display password requirements. In MainActivity.kt , the onCreate function retrieves references to these UI elements using findViewById . Password Rules: The textView displays the password requirements: minimum length of 8 characters, containing at least one uppercase letter, one number, and one special character. Password Validation with TextWatcher: A TextWatcher is added to the editText . This listener gets triggered whenever the text in the edit text changes. Inside the onTextChanged method, the code checks if the entered text is a valid password using the isValidPassword extension function and if its length is at least 8 ...