Can you give examples of custom interface components you have created as custom Views?

An example of a custom interface component based on a custom View could be:

• A custom progress indicator with a unique animation and style that is not supported by the standard ProgressBar.
• A widget for displaying a rating in the form of stars with the ability to select and custom rendering.
• A custom circular chart with fill animation, drawn on a Canvas.

An example of a simple custom View that draws a circle with text:

class CircleTextView(context: Context, attrs: AttributeSet?) : View(context, attrs) {
    private val paint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
        color = Color.BLUE
        style = Paint.Style.FILL
    }
    private val textPaint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
        color = Color.WHITE
        textSize = 50f
        textAlign = Paint.Align.CENTER
    }
    override fun onDraw(canvas: Canvas) {
        super.onDraw(canvas)
        val radius = width.coerceAtMost(height) / 2f
        canvas.drawCircle(width / 2f, height / 2f, radius, paint)
        canvas.drawText("Hi", width / 2f, height / 2f + textPaint.textSize / 3, textPaint)
    }
}