Ensure correct Voiceover behavior in iOS 14.

afweiss · material-automation · commit 4b4b0f3d7d17 · 2021-02-05T11:37:07.000-08:00
PiperOrigin-RevId: 355892745
diff --git a/components/BottomNavigation/src/private/MDCBottomNavigationItemView.m b/components/BottomNavigation/src/private/MDCBottomNavigationItemView.m
@@ -168,6 +168,10 @@ - (void)commonMDCBottomNavigationItemViewInit {
     _button.autoresizingMask = (UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight);
     _button.accessibilityLabel = [self accessibilityLabelWithTitle:_title];
     _button.accessibilityValue = self.accessibilityValue;
+    // This needs to be set specifically for VoiceOver to work on iOS 14, see b/175421576
+    if (@available(iOS 14, *)) {
+      _button.accessibilityTraits |= UIAccessibilityTraitButton;
+    }
     [self addSubview:_button];
   }
 }

Original file line number	Diff line number	Diff line change
`@@ -168,6 +168,10 @@ - (void)commonMDCBottomNavigationItemViewInit {`
`168`	`168`	`_button.autoresizingMask = (UIViewAutoresizingFlexibleWidth \| UIViewAutoresizingFlexibleHeight);`
`169`	`169`	`_button.accessibilityLabel = [self accessibilityLabelWithTitle:_title];`
`170`	`170`	`_button.accessibilityValue = self.accessibilityValue;`
	`171`	`+ // This needs to be set specifically for VoiceOver to work on iOS 14, see b/175421576`
	`172`	`+ if (@available(iOS 14, *)) {`
	`173`	`+ _button.accessibilityTraits \|= UIAccessibilityTraitButton;`
	`174`	`+ }`
`171`	`175`	`[self addSubview:_button];`
`172`	`176`	`}`
`173`	`177`	`}`