[Slider] Use the locale from the context for formatting

Author: pubiqq

lib/java/com/google/android/material/slider/BaseSlider.java

@@ -303,6 +303,7 @@ abstract class BaseSlider<
   @NonNull private final Paint inactiveTicksPaint;
   @NonNull private final Paint activeTicksPaint;
   @NonNull private final Paint stopIndicatorPaint;
+  @NonNull private final Locale locale;
   @NonNull private final AccessibilityHelper accessibilityHelper;
   private final AccessibilityManager accessibilityManager;
   private AccessibilityEventSender accessibilityEventSender;
@@ -463,6 +464,8 @@ public BaseSlider(
     // Initialize with just this view's visibility.
     thisAndAncestorsVisible = isShown();
 
+    locale = context.getResources().getConfiguration().locale;
+
     inactiveTrackPaint = new Paint();
     activeTrackPaint = new Paint();
 
@@ -3493,7 +3496,7 @@ private String formatValue(float value) {
       return formatter.getFormattedValue(value);
     }
 
-    return String.format((int) value == value ? "%.0f" : "%.2f", value);
+    return String.format(locale, (int) value == value ? "%.0f" : "%.2f", value);
   }
 
   private void setValueForLabel(TooltipDrawable label, float value) {
@@ -4093,7 +4096,7 @@ protected void onPopulateNodeForVirtualView(
         verbalValueType = startOrEndDescription(virtualViewId);
       }
       contentDescription.append(
-          String.format(Locale.getDefault(), "%s, %s", verbalValueType, verbalValue));
+          String.format(slider.locale, "%s, %s", verbalValueType, verbalValue));
       info.setContentDescription(contentDescription.toString());
 
       slider.updateBoundsForVirtualViewId(virtualViewId, virtualViewBounds);