blocks|key|2594342|text|表示样式是自动的，当您以模式方式显示视图控制器时，它默认为iOS+13中的页单。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2594343|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Presentation style is Automatic which defaults to pagesheet in iOS 13 when you present a viewcontroller modally

blocks|key|2594404|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2594405|UIModalPresentationStyle.automatic在.pageSheet和.fullScreen之间切换取决于UIViewController是presented.|ordered-list-item|offset|length|style|BOLD|2594406|If的上下文--您使用的是普通的UIViewController，如果您使用的是UIViewController的某些子类，比如UIImagePickerController+iOS，则默认为.pageSheet.|2594407|But，希望内容处于全屏模式，因此默认使用.fullscreen.|2594408|If。iOS版本小于13，它将始终默认为13|2594409|2594410|entityMap^0|0|0|Y|Z|A|1A|B|1S|G|0|G|G|14|G|1S|N|2O|A|0|L|B|0|3|3|A|2|K|2|0|0^^$0|@$1|2|3|-4|4|5|6|Q|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|R|7|@$D|S|E|T|F|G]|$D|U|E|V|F|G]|$D|W|E|X|F|G]|$D|Y|E|Z|F|G]]|8|@]|9|$]]|$1|H|3|I|4|C|6|10|7|@$D|11|E|12|F|G]|$D|13|E|14|F|G]|$D|15|E|16|F|G]|$D|17|E|18|F|G]]|8|@]|9|$]]|$1|J|3|K|4|C|6|19|7|@$D|1A|E|1B|F|G]]|8|@]|9|$]]|$1|L|3|M|4|C|6|1C|7|@$D|1D|E|1E|F|G]|$D|1F|E|1G|F|G]|$D|1H|E|1I|F|G]]|8|@]|9|$]]|$1|N|3|-4|4|5|6|1J|7|@]|8|@]|9|$]]|$1|O|3|-4|4|5|6|1K|7|@]|8|@]|9|$]]]|P|$]]

<ol>
<li>UIModalPresentationStyle.automatic switches between .pageSheet and .fullScreen depending on the context in which UIViewController is presented.</li>
<li>If you are using normal UIViewController it will default to .pageSheet.</li>
<li>But if you are using some subclass of UIViewController like UIImagePickerController iOS expects content should in full screen mode so it will default to .fullscreen.</li>
<li>If you are using iOS version less than 13 it will always default to .fullscreen.</li>
</ol>

blocks|key|1642479|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1642480|系统选择的默认表示样式。是UIModalPresentationAutomatic|blockquote|offset|length|style|BOLD|CODE|1642481|1642482|1642483|自动意味着如果我们使用UIImagePickerController和sourceType+.photoLibrary，那么它就以级联视图的形式出现。而sourceType+.camera则显示在全屏上。|1642484|https://developer.apple.com/videos/play/wwdc2019/224/|1642485|https://developer.apple.com/documentation/uikit/uimodalpresentationstyle/uimodalpresentationpagesheet?language=objc|1642486|entityMap|0|LINK|mutability|MUTABLE|url|1^0|0|D|S|D|S|0|0|0|B|N|1A|D|2F|7|0|0|1H|0|0|0|37|1|0^^$0|@$1|2|3|-4|4|5|6|Y|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|Z|7|@$D|10|E|11|F|G]|$D|12|E|13|F|H]]|8|@]|9|$]]|$1|I|3|-4|4|5|6|14|7|@]|8|@]|9|$]]|$1|J|3|-4|4|5|6|15|7|@]|8|@]|9|$]]|$1|K|3|L|4|5|6|16|7|@$D|17|E|18|F|H]|$D|19|E|1A|F|H]|$D|1B|E|1C|F|H]]|8|@]|9|$]]|$1|M|3|N|4|5|6|1D|7|@]|8|@$D|1E|E|1F|1|1G]]|9|$]]|$1|O|3|P|4|5|6|1H|7|@]|8|@$D|1I|E|1J|1|1K]]|9|$]]|$1|Q|3|-4|4|5|6|1L|7|@]|8|@]|9|$]]]|R|$S|$4|T|U|V|9|$W|N]]|X|$4|T|U|V|9|$W|P]]]]

<blockquote>
 The default presentation style chosen by the system. It's
 <code>UIModalPresentationAutomatic</code>
</blockquote>

Automatic means if we using <code>UIImagePickerController</code> and sourceType <code>.photoLibrary</code> then it's present as cascade view. And sourceType <code>.camera</code> then it's present in full screen.

<a href="https://developer.apple.com/videos/play/wwdc2019/224/" rel="nofollow noreferrer">https://developer.apple.com/videos/play/wwdc2019/224/</a>

<a href="https://developer.apple.com/documentation/uikit/uimodalpresentationstyle/uimodalpresentationpagesheet?language=objc" rel="nofollow noreferrer">https://developer.apple.com/documentation/uikit/uimodalpresentationstyle/uimodalpresentationpagesheet?language=objc</a>

As per apple documentation,

<blockquote>
 The default value for this property is UIModalPresentationStyle.automatic
</blockquote>

In iOS 12, the default value was UIModalPresentationStyle.fullScreen, and that what I get.

But when I am running my app on iOS 13 I am getting <code>.pageSheet as navigationController.modalPresentationStyle</code>

Is there anything I am doing wrong or the default value is .pageSheet?

modalPresentationStyle default value in iOS 13

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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根据苹果公司的文件，此属性的默认值为UIModalPresentationStyle.automatic在iOS 12中，默认值是UIModalPresentationStyle.fullScreen，这就是我得到的。但是当我在iOS 13上运行我的应用程序时，我得到的是.pageSheet as navigation...

问modalPresentationStyle默认值在iOS 13中
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问modalPresentationStyle默认值在iOS 13中EN