Custom View to achieve side sliding effect (Java)

Custom View is one of the commonly used technologies in Android development, which allows us to create user interface elements with customized appearance and interactive behavior. This article will introduce how to use Java to write a custom View to achieve a side-sliding effect.

First, we need to create a class that inherits from View to implement a custom View. We name it SwipeView.

public class SwipeView extends View {
   
    
    

    private Paint paint;
    private int touchSlop;
    private float startX;
    private float startY