[iOS] Updated Radio Buttons / Check Boxes Contrast Ratio (microsoft#6372)

Co-authored-by: Paul Campbell <[email protected]>

Author: 2 people

source/ios/AdaptiveCards/ADCIOSVisualizer/ADCIOSVisualizer.xcodeproj/project.pbxproj

@@ -809,7 +809,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
@@ -863,7 +863,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				VALIDATE_PRODUCT = YES;

source/ios/AdaptiveCards/AdaptiveCards/AdaptiveCards/ACRChoiceSetViewDataSource.mm

@@ -31,13 +31,29 @@ - (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(nulla
         UIImage *iconImage = nil;
         NSBundle *bundle = [[ACOBundle getInstance] getBundle];
         if ([reuseIdentifier isEqualToString:@"checked-checkbox"]) {
-            iconImage = [UIImage imageNamed:@"checked-checkbox-24.png" inBundle:bundle compatibleWithTraitCollection:nil];
+            if (@available(iOS 13.0, *)) {
+                iconImage = [UIImage systemImageNamed:@"checkmark.square"];
+            } else {
+                iconImage = [UIImage imageNamed:@"checked-checkbox-24.png" inBundle:bundle compatibleWithTraitCollection:nil];
+            }
         } else if ([reuseIdentifier isEqualToString:@"checked-radiobutton"]) {
-            iconImage = [UIImage imageNamed:@"checked.png" inBundle:bundle compatibleWithTraitCollection:nil];
+            if (@available(iOS 13.0, *)) {
+                iconImage = [UIImage systemImageNamed:@"record.circle"];
+            } else {
+                iconImage = [UIImage imageNamed:@"checked.png" inBundle:bundle compatibleWithTraitCollection:nil];
+            }
         } else if ([reuseIdentifier isEqualToString:@"unchecked-checkbox"]) {
-            iconImage = [UIImage imageNamed:@"unchecked-checkbox-24.png" inBundle:bundle compatibleWithTraitCollection:nil];
+            if (@available(iOS 13.0, *)) {
+                iconImage = [UIImage systemImageNamed:@"square"];
+            } else {
+                iconImage = [UIImage imageNamed:@"square" inBundle:bundle compatibleWithTraitCollection:nil];
+            }
         } else if ([reuseIdentifier isEqualToString:@"unchecked-radiobutton"]) {
-            iconImage = [UIImage imageNamed:@"unchecked.png" inBundle:bundle compatibleWithTraitCollection:nil];
+            if (@available(iOS 13.0, *)) {
+                iconImage = [UIImage systemImageNamed:@"circle"];
+            } else {
+                iconImage = [UIImage imageNamed:@"unchecked.png" inBundle:bundle compatibleWithTraitCollection:nil];
+            }
         }
 
         if (iconImage) {
@@ -161,9 +177,9 @@ - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(N
     }
     cell.accessibilityTraits = cell.accessibilityTraits | UIAccessibilityTraitButton;
     cell.accessibilityLabel = [NSString stringWithFormat:@"%@, %@", _accessibilityString, title];
-    
+
     NSString *elementId = [NSString stringWithCString:_choiceSetDataSource->GetId().c_str()
-                                         encoding:NSUTF8StringEncoding];
+                                             encoding:NSUTF8StringEncoding];
     cell.textLabel.accessibilityIdentifier = [NSString stringWithFormat:@"%@, %@", elementId, title];
 
     return cell;