Span PMs across the PaymentSheet when there are only two of them. (#4432

)

* fix width of PMs when only two methods

* spread across for all number of PMs rather than just 2

paymentsheet/src/main/java/com/stripe/android/paymentsheet/AddPaymentMethodsAdapter.kt

@@ -32,11 +32,21 @@ internal class AddPaymentMethodsAdapter(
                 val targetWidth = parent.measuredWidth - parent.paddingStart - parent.paddingEnd
                 val minItemWidth = 100 * parent.context.resources.displayMetrics.density +
                     itemView.marginEnd + itemView.marginStart
-                // numVisibleItems is incremented in steps of 0.5 items (1, 1.5, 2, 2.5, 3, ...)
-                val numVisibleItems = (targetWidth * 2 / minItemWidth).toInt() / 2f
+
+                // if all items fit at min width, then span them across the sheet evenly filling it.
+                // otherwise the number of items visible should be a multiple of .5
                 val viewWidth =
-                    targetWidth / numVisibleItems - itemView.marginEnd - itemView.marginStart
-                itemView.layoutParams.width = viewWidth.toInt()
+                    if (minItemWidth * paymentMethods.size < targetWidth) {
+                        targetWidth / paymentMethods.size
+                    } else {
+                        // numVisibleItems is incremented in steps of 0.5 items
+                        // (1, 1.5, 2, 2.5, 3, ...)
+                        val numVisibleItems = (targetWidth * 2 / minItemWidth).toInt() / 2f
+                        targetWidth / numVisibleItems
+                    }
+
+                itemView.layoutParams.width =
+                    viewWidth.toInt() - itemView.marginEnd - itemView.marginStart
                 itemView.setOnClickListener {
                     onItemSelected(bindingAdapterPosition)
                 }