blocks|key|1717074|text|我也有同样的问题。我制作了一个新的<MySnackbar>组件，将所有的道具传递给原始的<Snackbar>，并在新组件中添加了默认的variant和severity。更好的是，您现在不需要编写<Snackbar><Alert+/><Snackbar+/>。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1717075|MUI+5.0.3的示例如下(我希望它始终显示在顶部)|1717076|/*+usage:
+*++This+component+should+be+connected+to+redux+store.
+*++setup:
+*++++<TopSnackbar+/>+//+in+top+layer+like+App.tsx
+*++++use+with+redux/snackbar.ts
+*++interact:
+*++++import+{+showTopSnackbar,+hideTopSnackbar}+from+"redux/snackbar"
+*++++showTopSnackbar(message,severity?);
+*++++hideTopSnackbar();
+*/

import+{+Alert,+IconButton,+Snackbar+}+from+"@mui/material";
import+{+connectTopSnackbar,+hideTopSnackbar+}+from+"redux/snackbar";
import+{+useSelector+}+from+"redux/store";
import+{+useDispatch+}+from+"react-redux";
import+{+useEffect+}+from+"react";
import+{+Close+}+from+"@mui/icons-material";
const+DEFAULT_AUTO_HIDE_MS+=+6000;

export+function+TopSnackbar()+{
++const+dispatch+=+useDispatch();
++const+snackbar+=+useSelector((state)+=>+state.snackbar);
++const+{+isOpenTopSnackBar,+snackBarMessage,+snackBarSeverity+}+=+snackbar;
++const+autoHideMs+=+6000+??+DEFAULT_AUTO_HIDE_MS;

++useEffect(()+=>+{},+[]);

++useEffect(()+=>+{
++++dispatch(connectTopSnackbar());
++},+[dispatch]);

++function+closeHandler()+{
++++dispatch(hideTopSnackbar());
++}
++return+(
++++<Snackbar
++++++anchorOrigin={{+vertical:+"top",+horizontal:+"center"+}}
++++++open={isOpenTopSnackBar}
++++++autoHideDuration={autoHideMs}
++++++onClose={closeHandler}
++++++message={snackBarMessage}
++++>
++++++{snackBarSeverity+?+(
++++++++<Alert
++++++++++variant="filled"
++++++++++severity={snackBarSeverity}
++++++++++action={
++++++++++++<IconButton
++++++++++++++//+variant="contained"
++++++++++++++color="inherit"
++++++++++++++size="small"
++++++++++++++onClick={closeHandler}
++++++++++++>
++++++++++++++<Close+/>
++++++++++++</IconButton>
++++++++++}
++++++++>
++++++++++{snackBarMessage}
++++++++</Alert>
++++++)+:+undefined}
++++</Snackbar>
++);
}|code-block|syntax|javascript|1717077|entityMap^0|H|C|18|A|1V|7|23|8|2P|V|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]|$9|T|A|U|B|C]|$9|V|A|W|B|C]|$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Z|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|10|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|11|8|@]|D|@]|E|$]]]|N|$]]

I had the same problem too.
I made a new <code>&lt;MySnackbar&gt;</code> component passing all the props to the original <code>&lt;Snackbar&gt;</code> and added an default <code>variant</code> and <code>severity</code> in the new component. It's even better that you don't need to write <code>&lt;Snackbar&gt;&lt;Alert /&gt;&lt;Snackbar /&gt;</code> now.
The example of MUI 5.0.3 is as below (I wanted it to always show at top)
<pre><code>
/* usage:
 * This component should be connected to redux store.
 * setup:
 * &lt;TopSnackbar /&gt; // in top layer like App.tsx
 * use with redux/snackbar.ts
 * interact:
 * import { showTopSnackbar, hideTopSnackbar} from &quot;redux/snackbar&quot;
 * showTopSnackbar(message,severity?);
 * hideTopSnackbar();
 */

import { Alert, IconButton, Snackbar } from &quot;@mui/material&quot;;
import { connectTopSnackbar, hideTopSnackbar } from &quot;redux/snackbar&quot;;
import { useSelector } from &quot;redux/store&quot;;
import { useDispatch } from &quot;react-redux&quot;;
import { useEffect } from &quot;react&quot;;
import { Close } from &quot;@mui/icons-material&quot;;
const DEFAULT_AUTO_HIDE_MS = 6000;

export function TopSnackbar() {
 const dispatch = useDispatch();
 const snackbar = useSelector((state) =&gt; state.snackbar);
 const { isOpenTopSnackBar, snackBarMessage, snackBarSeverity } = snackbar;
 const autoHideMs = 6000 ?? DEFAULT_AUTO_HIDE_MS;

 useEffect(() =&gt; {}, []);

 useEffect(() =&gt; {
 dispatch(connectTopSnackbar());
 }, [dispatch]);

 function closeHandler() {
 dispatch(hideTopSnackbar());
 }
 return (
 &lt;Snackbar
 anchorOrigin={{ vertical: &quot;top&quot;, horizontal: &quot;center&quot; }}
 open={isOpenTopSnackBar}
 autoHideDuration={autoHideMs}
 onClose={closeHandler}
 message={snackBarMessage}
 &gt;
 {snackBarSeverity ? (
 &lt;Alert
 variant=&quot;filled&quot;
 severity={snackBarSeverity}
 action={
 &lt;IconButton
 // variant=&quot;contained&quot;
 color=&quot;inherit&quot;
 size=&quot;small&quot;
 onClick={closeHandler}
 &gt;
 &lt;Close /&gt;
 &lt;/IconButton&gt;
 }
 &gt;
 {snackBarMessage}
 &lt;/Alert&gt;
 ) : undefined}
 &lt;/Snackbar&gt;
 );
}
</code></pre>

blocks|key|3263039|text|这对我有帮助。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3263040|SnackbarProviderProps：|3263041|+<SnackbarProvider
+++classes={
++++++containerRoot:+classes.containerRoot
+++}
+/>|code-block|syntax|javascript|3263042|风格：|3263043|containerRoot:+{
++++'&+.SnackbarContent-root':+{
++++++backgroundColor:+'color'+!important`,

++++++'&.SnackbarItem-contentRoot':+{
++++++++borderRadius:+'0px'
++++++}
++++}
++}|3263044|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

It helped me.
SnackbarProviderProps:
<pre><code> &lt;SnackbarProvider
 classes={
 containerRoot: classes.containerRoot
 }
 /&gt;
</code></pre>
Styles:
<pre><code>containerRoot: {
 '&amp; .SnackbarContent-root': {
 backgroundColor: 'color' !important`,

 '&amp;.SnackbarItem-contentRoot': {
 borderRadius: '0px'
 }
 }
 }
</code></pre>

blocks|key|3263058|text|默认情况下，MUI组件带有情感作为它们的样式引擎。makeStyle是过时的梅v5+(实践)。如果您想重写更深层次元素的样式，您必须这样做：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3263059|https://mui.com/material-ui/guides/interoperability/#deeper-elements-3|offset|length|3263060|import+{+SnackbarProvider+}+from+"notistack";
import+{+styled+}+from+"@mui/material";

const+StyledSnackbarProvider+=+styled(SnackbarProvider)`
++&.SnackbarItem-contentRoot+{
++++background-color:+orange;
++}
`;

export+default+()+=>+{
++return+(
++++<StyledSnackbarProvider>
++++++<MyApp+/>
++++</StyledSnackbarProvider>
++);
};|code-block|syntax|javascript|3263061|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|1Y|0|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|S|8|@]|9|@$D|T|E|U|1|V]]|A|$]]|$1|F|3|G|5|H|7|W|8|@]|9|@]|A|$I|J]]|$1|K|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|C]]]]

By default, MUI components come with emotion as their style engine. makeStyle is obsolete with mui v5 (depracated). If you want to override style of deeper element you have to do like this:
<a href="https://mui.com/material-ui/guides/interoperability/#deeper-elements-3" rel="noreferrer">https://mui.com/material-ui/guides/interoperability/#deeper-elements-3</a>
<pre><code>
import { SnackbarProvider } from &quot;notistack&quot;;
import { styled } from &quot;@mui/material&quot;;

const StyledSnackbarProvider = styled(SnackbarProvider)`
 &amp;.SnackbarItem-contentRoot {
 background-color: orange;
 }
`;

export default () =&gt; {
 return (
 &lt;StyledSnackbarProvider&gt;
 &lt;MyApp /&gt;
 &lt;/StyledSnackbarProvider&gt;
 );
};

</code></pre>

blocks|key|3263066|text|您可以为MUI+v5使用sx道具。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3263067|<SnackbarProvider
++anchorOrigin={{
++++vertical:+'top',
++++horizontal:+'center',
++}}
++sx={{
++++"&+.SnackbarContent-root":+{
++++++color:+"primary.main",
++++++bgcolor:+"secondary.main"
++++}
++}}
>
++<MyApp+/>
</SnackbarProvider>|code-block|syntax|javascript|3263068|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You can use the sx prop for MUI v5
<pre><code>&lt;SnackbarProvider
 anchorOrigin={{
 vertical: 'top',
 horizontal: 'center',
 }}
 sx={{
 &quot;&amp; .SnackbarContent-root&quot;: {
 color: &quot;primary.main&quot;,
 bgcolor: &quot;secondary.main&quot;
 }
 }}
&gt;
 &lt;MyApp /&gt;
&lt;/SnackbarProvider&gt;
</code></pre>

The default background color is white, but I'd like to change it to a dark color.
Dark mode is enabled in mui v5.
I've found ways to change the error, info, etc., but what I want to do is to change the default background color without specifying any variant.
<pre class="lang-js prettyprint-override"><code>// _app.tsx
&lt;SnackbarProvider maxSnack={3}&gt;
 &lt;Component {...pageProps} /&gt;
&lt;/SnackbarProvider&gt;
</code></pre>
This is how notistack is implemented.

How do I change the default background color of notistack in MUI v5?

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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默认的背景颜色是白色，但我想将其更改为深色。在mui v5中启用暗模式。我已经找到了更改错误、信息等的方法，但是我想要做的是更改默认的背景色，而不指定任何变体。// _app.tsx<SnackbarProvider maxSnack={3}> <Component {...pageProps} /></Snackb...

问如何在MUI v5中更改通知堆栈的默认背景色？
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问如何在MUI v5中更改通知堆栈的默认背景色？EN