Add animation in custom shape

[JulioManzano]

how can I add an animation for a custom shape

[m-Samhoury]

To animate custom shape just do this:
Here I created a rectangular shape for a button, multiplying with the value parameter does the job of animating the custom shape.

Find below the code snippet(Kotlin):

override fun draw(canvas: Canvas?, point: PointF?, value: Float, paint: Paint?) {
               canvas?.drawRect((point?.x ?: 0f),
                       (point?.y ?: 0f),
                       ((point?.x ?: 0f) + width) * value,
                       ((point?.y ?: 0f) + height) * value, paint)
           }

[TakuSemba]

Yep. You can create a custom shape to tweak the animation.
Thank you @m-Samhoury .