align AlertDialog buttons to center

Question

I use this codes for Android (Java) programming:

public static MessageBoxResult showOk(
        Context context, String title, String message, String okMessa         


        

Answer 1

Ended up with this extension for Kotlin:

fun AlertDialog.withCenteredButtons() {
    val positive = getButton(AlertDialog.BUTTON_POSITIVE)
    val negative = getButton(AlertDialog.BUTTON_NEGATIVE)

    //Disable the material spacer view in case there is one
    val parent = positive.parent as? LinearLayout
    parent?.gravity = Gravity.CENTER_HORIZONTAL
    val leftSpacer = parent?.getChildAt(1)
    leftSpacer?.visibility = View.GONE

    //Force the default buttons to center
    val layoutParams = LinearLayout.LayoutParams(
        LinearLayout.LayoutParams.MATCH_PARENT,
        LinearLayout.LayoutParams.WRAP_CONTENT
    )

    layoutParams.weight = 1f
    layoutParams.gravity = Gravity.CENTER

    positive.layoutParams = layoutParams
    negative.layoutParams = layoutParams
}

And use with:

.show().withCenteredButtons()