What custom interface components have you created using custom Views?

Custom Views in Android are created to implement unique or non-standard interface elements that cannot be achieved with standard components. For example, I have created:

• Custom buttons with animations and adjustable shapes.
• Progress indicators with non-standard designs and dynamic effects.
• Graphs and charts drawn manually using Canvas.
• Complex combined elements, such as custom lists with unique scrolling behavior.

An example of creating a simple custom View by overriding the onDraw method:

class CustomCircleView(context: Context, attrs: AttributeSet) : View(context, attrs) {
    private val paint = Paint().apply {
        color = Color.RED
        isAntiAlias = true
    }

    override fun onDraw(canvas: Canvas) {
        super.onDraw(canvas)
        val radius = Math.min(width, height) / 2f
        canvas.drawCircle(width / 2f, height / 2f, radius, paint)
    }
}