断言当前回退特征集合包含一个或多个未指定的特征:
Assert Current fallback trait collection contains one or more unspecified traits:
一旦我们的应用程序在 iOS13 上 运行,那么日志就会充满歪曲的断言。有人知道如何删除它吗?
2019-09-19 08:05:43.528382+0200 Ts-2-cz-test[56066:20590106] [Assert] Current fallback trait collection contains one or more unspecified traits: {(
"_UITraitNameDisplayScale",
"_UITraitNameDisplayCornerRadius",
"_UITraitNameSemanticContext",
"_UITraitNameUserInterfaceLevel",
"_UITraitNamePresentationSemanticContext",
"_UITraitNameVibrancy",
"_UITraitNameDisplayGamut",
"_UITraitNameDebugHighlight",
"_UITraitNamePreferredContentSizeCategory",
"_UITraitNameTouchLevel",
"_UITraitNameAccessibilityContrast",
"_UITraitNameLegibilityWeight"
)}; traitCollection: <UITraitCollection: 0x7fb4ce32ad20; HorizontalSizeClass = Compact>; currentFallbackEnvironment: <UIView: 0x7fb46c421d80; frame = (0 0; 1024 1366); autoresize = W+H; layer = <CALayer: 0x7fb46c421ef0>>
UITraitCollection 在 iOS13 中发生了变化。你可以找出这个 class 被用在什么地方。
例如:
删除此方法 [UITraitCollection traitCollectionWithHorizontalSizeClass:UIUserInterfaceSizeClassUnspecified]
我在这里遇到了同样的问题,因为我覆盖了 traitCollection
属性(Apple 不推荐,但我在我的案例中没有找到任何其他解决方案)和新的 traitCollection
我 returned 有许多未指定的特征(如错误消息所述)。
所以现在我 return 一个新的 traitCollection
对象,但我通过添加 super.traitCollection
来初始化它。所以在我的视图控制器中我有类似的东西:
public override var traitCollection: UITraitCollection {
var newTraitCollection: [UITraitCollection] = [super.traitCollection]
// I need to force size class on iPad
if UIDevice.current.userInterfaceIdiom == .pad {
newTraitCollection += [UITraitCollection(verticalSizeClass: .regular), UITraitCollection(horizontalSizeClass: .compact)]
}
return UITraitCollection(traitsFrom: newTraitCollection)
}
选择的答案仍然给我错误。相反,你应该使用 @NSCopying var overrideTraitCollection: UITraitCollection? { get set }
查看更多here
一旦我们的应用程序在 iOS13 上 运行,那么日志就会充满歪曲的断言。有人知道如何删除它吗?
2019-09-19 08:05:43.528382+0200 Ts-2-cz-test[56066:20590106] [Assert] Current fallback trait collection contains one or more unspecified traits: {(
"_UITraitNameDisplayScale",
"_UITraitNameDisplayCornerRadius",
"_UITraitNameSemanticContext",
"_UITraitNameUserInterfaceLevel",
"_UITraitNamePresentationSemanticContext",
"_UITraitNameVibrancy",
"_UITraitNameDisplayGamut",
"_UITraitNameDebugHighlight",
"_UITraitNamePreferredContentSizeCategory",
"_UITraitNameTouchLevel",
"_UITraitNameAccessibilityContrast",
"_UITraitNameLegibilityWeight"
)}; traitCollection: <UITraitCollection: 0x7fb4ce32ad20; HorizontalSizeClass = Compact>; currentFallbackEnvironment: <UIView: 0x7fb46c421d80; frame = (0 0; 1024 1366); autoresize = W+H; layer = <CALayer: 0x7fb46c421ef0>>
UITraitCollection 在 iOS13 中发生了变化。你可以找出这个 class 被用在什么地方。
例如:
删除此方法 [UITraitCollection traitCollectionWithHorizontalSizeClass:UIUserInterfaceSizeClassUnspecified]
我在这里遇到了同样的问题,因为我覆盖了 traitCollection
属性(Apple 不推荐,但我在我的案例中没有找到任何其他解决方案)和新的 traitCollection
我 returned 有许多未指定的特征(如错误消息所述)。
所以现在我 return 一个新的 traitCollection
对象,但我通过添加 super.traitCollection
来初始化它。所以在我的视图控制器中我有类似的东西:
public override var traitCollection: UITraitCollection {
var newTraitCollection: [UITraitCollection] = [super.traitCollection]
// I need to force size class on iPad
if UIDevice.current.userInterfaceIdiom == .pad {
newTraitCollection += [UITraitCollection(verticalSizeClass: .regular), UITraitCollection(horizontalSizeClass: .compact)]
}
return UITraitCollection(traitsFrom: newTraitCollection)
}
选择的答案仍然给我错误。相反,你应该使用 @NSCopying var overrideTraitCollection: UITraitCollection? { get set }
查看更多here