blocks|key|1855565|text|您必须分别配置iOS和Android。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1855566|对于iOS转到Xcode，选择您的项目>常规>部署信息>设备方向，并只选择横向选项。|1855567|对于Android，将android:screenOrientation="landscape"添加到<activity>标记中。|offset|length|style|CODE|1855568|entityMap^0|0|0|B|11|1F|A|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|N|8|@$F|O|G|P|H|I]|$F|Q|G|R|H|I]]|9|@]|A|$]]|$1|J|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|K|$]]

You have to configure iOS and Android individually.

For iOS go to Xcode, select your project > General > Deployment Info > Device orientation and select only the landscape options.

For Android, add <code>android:screenOrientation="landscape"</code> to your <code>&lt;activity&gt;</code> tag.

blocks|key|1855600|text|使用SystemChrome.setPreferredOrientations在启动主小部件时设置横向或纵向模式。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1855601|+++++++++void+main()+{+
++++++++++runApp(MyApp());+
++++++++++}

++++++++class+MyApp+extends+StatelessWidget+{
++++++++++//+This+widget+is+the+root+of+your+application.
++++++++++@override
++++++++++Widget+build(BuildContext+context)+{
++++++++++++config();
++++++++++++return+MaterialApp(
++++++++++++++title:+...
++++++++++++);
++++++++++}

+++++++++void+config()+{
++++++++++++SystemChrome.setPreferredOrientations([
++++++++++++++DeviceOrientation.landscapeLeft,
++++++++++++++DeviceOrientation.landscapeRight
++++++++++++]);
++++++++++}|code-block|syntax|javascript|1855602|entityMap^0|2|11|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Use <code>SystemChrome.setPreferredOrientations</code> to set the landscape or portrait mode when you start your main widget.

<pre><code> void main() { 
 runApp(MyApp()); 
 }

 class MyApp extends StatelessWidget {
 // This widget is the root of your application.
 @override
 Widget build(BuildContext context) {
 config();
 return MaterialApp(
 title: ...
 );
 }

 void config() {
 SystemChrome.setPreferredOrientations([
 DeviceOrientation.landscapeLeft,
 DeviceOrientation.landscapeRight
 ]);
 }
</code></pre>

blocks|key|747112|text|将此代码放入MyApp()中|type|unstyled|depth|inlineStyleRanges|entityRanges|data|747113|++SystemChrome.setPreferredOrientations([
++++DeviceOrientation.landscapeLeft,
++++DeviceOrientation.landscapeRight,
++]);|code-block|syntax|javascript|747114|如下所示：|747115|class+MyApp+extends+StatelessWidget+{
++++@override
++++Widget+build(BuildContext+context)+{
++++++SystemChrome.setPreferredOrientations([
++++++++DeviceOrientation.landscapeLeft,
++++++++DeviceOrientation.landscapeRight,
++++++]);
++++++return+new+MaterialApp();
++++}
++}|747116|如果您想要肖像模式，那么请查看此answer|offset|length|747117|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/51892462/7652758^0|0|0|0|0|G|6|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Y|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|10|8|@]|9|@$M|11|N|12|1|13]]|A|$]]|$1|O|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|V]]]]

Put this code in the MyApp()

<pre><code> SystemChrome.setPreferredOrientations([
 DeviceOrientation.landscapeLeft,
 DeviceOrientation.landscapeRight,
 ]);
</code></pre>

Like below:

<pre><code>class MyApp extends StatelessWidget {
 @override
 Widget build(BuildContext context) {
 SystemChrome.setPreferredOrientations([
 DeviceOrientation.landscapeLeft,
 DeviceOrientation.landscapeRight,
 ]);
 return new MaterialApp();
 }
 }
</code></pre>

If you want the Portrait mode then check out this <a href="https://stackoverflow.com/a/51892462/7652758">answer</a>

blocks|key|4469613|text|对于安卓来说，setPreferredOrientations运行得很好。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4469614|但是对于iOs，我们必须使用这个解决方案(包括电话和iPad)：https://github.com/flutter/flutter/issues/13238#issuecomment-432981342|offset|length|4469615|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/flutter/flutter/issues/13238#issuecomment-432981342^0|0|W|1Y|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

For Android, setPreferredOrientations works fine.
But for iOs, we have to use this solution (both phone and iPad): <a href="https://github.com/flutter/flutter/issues/13238#issuecomment-432981342" rel="nofollow noreferrer">https://github.com/flutter/flutter/issues/13238#issuecomment-432981342</a>

I want to set my app's default orientation as landscape like when I open a game app such as clash of clans or mobile legend. How can I do that in flutter?

How to set my app to landscape mode in Flutter?

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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问如何在颤振中将我的应用程序设置为景观模式？
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