Kotlin extension method to set margin.

ViewExtensions.kt

fun View.setMargins(
        left: Int? = null,
        top: Int? = null,
        right: Int? = null,
        bottom: Int? = null
) {
    val lp = layoutParams as? ViewGroup.MarginLayoutParams
            ?: return

    lp.setMargins(
            left ?: lp.leftMargin,
            top ?: lp.topMargin,
            right ?: lp.rightMargin,
            bottom ?: lp.bottomMargin
    )

    layoutParams = lp
}

Thank you for your code

Thanks. Need to add start margin and end margin.

fun View.setMargins(
        left: Int? = null,
        top: Int? = null,
        right: Int? = null,
        bottom: Int? = null
    ) {
        val lp = layoutParams as? ViewGroup.MarginLayoutParams
            ?: return

        lp.setMargins(
            left ?: lp.leftMargin,
            top ?: lp.topMargin,
            right ?: lp.rightMargin,
            bottom ?: lp.bottomMargin
        )
        lp.marginStart = lp.leftMargin
        lp.marginEnd = lp.rightMargin

        layoutParams = lp
    }