blocks|key|2759653|text|接口变更导致的更新：|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|2759654|从API24开始，Notification.Builder包含setCustomBigContentView(RemoteViews)。NotificationCompat.Builder+(它是support.v4包的一部分)也包含此方法。|CODE|2759655|请注意，NotificationCompat.Builder.setCustomBigContentView的文档说明：|2759656|2759657|提供自定义RemoteViews以代替扩展表单中的平台模板。这将覆盖原本由此生成器对象构造的展开布局。在JELLY_BEAN之前的版本上无操作。|blockquote|2759658|2759659|2759660|因此，这也只适用于>=+16+(JELLY_BEAN)接口。|2759661|2759662|原始答案|2759663|因此，在过度使用谷歌之后，我发现this+tutorial正在解释如何使用自定义的大布局。诀窍不是使用setStyle()，而是在构建Notification+之后手动设置它的字段。看起来有点老生常谈，但这是我最终想出来的：|2759664|notification_layout_big.xml：|2759665|<?xml+version="1.0"+encoding="utf-8"?>
<LinearLayout+xmlns:android="http://schemas.android.com/apk/res/android"
++++android:layout_width="match_parent"
++++android:layout_height="100dp"+
++++android:orientation="horizontal"+>

+++++
</LinearLayout>|code-block|syntax|javascript|2759666|在代码中构建Notification：|2759667|Notification+foregroundNote;

RemoteViews+bigView+=+new+RemoteViews(getApplicationContext().getPackageName(),
++++R.layout.notification_layout_big);

//+bigView.setOnClickPendingIntent()+etc..

Notification.Builder+mNotifyBuilder+=+new+Notification.Builder(this);
foregroundNote+=+mNotifyBuilder.setContentTitle("some+string")
++++++++.setContentText("Slide+down+on+note+to+expand")
++++++++.setSmallIcon(R.drawable.ic_stat_notify_white)
++++++++.setLargeIcon(bigIcon)
++++++++.build();

foregroundNote.bigContentView+=+bigView;

//+now+show+notification..
NotificationManager+mNotifyManager+=+(NotificationManager)+getSystemService(Context.NOTIFICATION_SERVICE);
mNotifyManager.notify(1,+foregroundNote);|2759668|编辑|2759669|正如chx101所指出的，这只适用于API+>=+16。我在这个答案中没有提到它，但在上面的链接教程中提到了它：|2759670|2759671|扩展通知最早是在Android4.1+JellyBean+API16中引入的。|2759672|2759673|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.android.com/reference/android/app/Notification.Builder.html#setCustomBigContentView(android.widget.RemoteViews))-method|1|https://developer.android.com/reference/android/support/v4/app/NotificationCompat.Builder.html|2|https://developer.android.com/reference/android/support/v4/app/NotificationCompat.Builder.html#setCustomBigContentView(android.widget.RemoteViews)|3|http://codeversed.com/expandable-notifications-android/^0|7|3|0|9|K|V|10|0|1W|Q|1|0|4|1E|2|0|0|0|0|0|0|0|0|4|0|1F|A|1V|C|G|D|3|0|0|0|6|C|0|0|0|2|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1U|8|@$9|1V|A|1W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|1X|8|@$9|1Y|A|1Z|B|H]]|D|@$9|20|A|21|1|22]|$9|23|A|24|1|25]]|E|$]]|$1|I|3|J|5|6|7|26|8|@]|D|@$9|27|A|28|1|29]]|E|$]]|$1|K|3|-4|5|6|7|2A|8|@]|D|@]|E|$]]|$1|L|3|M|5|N|7|2B|8|@]|D|@]|E|$]]|$1|O|3|-4|5|6|7|2C|8|@]|D|@]|E|$]]|$1|P|3|-4|5|6|7|2D|8|@]|D|@]|E|$]]|$1|Q|3|R|5|6|7|2E|8|@]|D|@]|E|$]]|$1|S|3|-4|5|6|7|2F|8|@]|D|@]|E|$]]|$1|T|3|U|5|6|7|2G|8|@$9|2H|A|2I|B|C]]|D|@]|E|$]]|$1|V|3|W|5|6|7|2J|8|@$9|2K|A|2L|B|H]|$9|2M|A|2N|B|H]]|D|@$9|2O|A|2P|1|2Q]]|E|$]]|$1|X|3|Y|5|6|7|2R|8|@]|D|@]|E|$]]|$1|Z|3|10|5|11|7|2S|8|@]|D|@]|E|$12|13]]|$1|14|3|15|5|6|7|2T|8|@$9|2U|A|2V|B|H]]|D|@]|E|$]]|$1|16|3|17|5|11|7|2W|8|@]|D|@]|E|$12|13]]|$1|18|3|19|5|6|7|2X|8|@$9|2Y|A|2Z|B|C]]|D|@]|E|$]]|$1|1A|3|1B|5|6|7|30|8|@]|D|@]|E|$]]|$1|1C|3|-4|5|6|7|31|8|@]|D|@]|E|$]]|$1|1D|3|1E|5|N|7|32|8|@]|D|@]|E|$]]|$1|1F|3|-4|5|6|7|33|8|@]|D|@]|E|$]]|$1|1G|3|-4|5|6|7|34|8|@]|D|@]|E|$]]]|1H|$1I|$5|1J|1K|1L|E|$1M|1N]]|1O|$5|1J|1K|1L|E|$1M|1P]]|1Q|$5|1J|1K|1L|E|$1M|1R]]|1S|$5|1J|1K|1L|E|$1M|1T]]]]

Update due to API changes: 

From API 24 on, the <code>Notification.Builder</code> contains a <a href="https://developer.android.com/reference/android/app/Notification.Builder.html#setCustomBigContentView(android.widget.RemoteViews)">setCustomBigContentView(RemoteViews)</a>-method. Also the <a href="https://developer.android.com/reference/android/support/v4/app/NotificationCompat.Builder.html">NotificationCompat.Builder</a> (which is part of the support.v4 package) contains this method. 
Please note, that the documentation for the <a href="https://developer.android.com/reference/android/support/v4/app/NotificationCompat.Builder.html#setCustomBigContentView(android.widget.RemoteViews)">NotificationCompat.Builder.setCustomBigContentView</a> states: 

<blockquote>
 Supply custom RemoteViews to use instead of the platform template in the expanded form. This will override the expanded layout that would otherwise be constructed by this Builder object. No-op on versions prior to JELLY_BEAN. 
</blockquote>

Therefore, this will also only work for API >= 16 (JELLY_BEAN).

<hr>

Original Answer

So after excessive google usage, I found <a href="http://codeversed.com/expandable-notifications-android/">this tutorial</a> explaining how to use custom big layouts. The trick is not to use <code>setStyle()</code> but manually set the <code>bigContentView</code> field of the <code>Notification</code> after building it. Seems a bit hacky, but this is what I finally came up with: 

notification_layout_big.xml:

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="100dp" &lt;!-- This is where I manually define the height --&gt;
 android:orientation="horizontal" &gt;

 &lt;!-- some more elements.. --&gt; 
&lt;/LinearLayout&gt;
</code></pre>

Building <code>Notification</code> in code:

<pre><code>Notification foregroundNote;

RemoteViews bigView = new RemoteViews(getApplicationContext().getPackageName(),
 R.layout.notification_layout_big);

// bigView.setOnClickPendingIntent() etc..

Notification.Builder mNotifyBuilder = new Notification.Builder(this);
foregroundNote = mNotifyBuilder.setContentTitle("some string")
 .setContentText("Slide down on note to expand")
 .setSmallIcon(R.drawable.ic_stat_notify_white)
 .setLargeIcon(bigIcon)
 .build();

foregroundNote.bigContentView = bigView;

// now show notification..
NotificationManager mNotifyManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
mNotifyManager.notify(1, foregroundNote);
</code></pre>

Edit 
As noted by chx101, this only works for API >= 16. I did not mention it in this answer, yet it was mentioned in the given linked tutorial above: 

<blockquote>
 Expanded notifications were first introduced in Android 4.1 JellyBean [API 16].
</blockquote>

blocks|key|165187|text|​|type|unstyled|depth|inlineStyleRanges|entityRanges|data|165188|📷|atomic|offset|length|165189|使用Kotlin生成自定义通知的|165190|++++++++++dialog\_custom\_notification++++++++++++++++++++++++++++++++++++++++++|code-block|syntax|javascript|165191|++++++++++++++++++++<LinearLayout
++++++++++++++++++++++++android:layout_width="match_parent"
++++++++++++++++++++++++android:layout_height="wrap_content"
++++++++++++++++++++++++android:layout_margin="@dimen/dp_10"
++++++++++++++++++++++++android:background="@drawable/shape_bg_main_notification"
++++++++++++++++++++++++android:gravity="center"
++++++++++++++++++++++++android:orientation="horizontal"
++++++++++++++++++++++++android:padding="@dimen/dp_10">

++++++++++++++++++++++++<LinearLayout
++++++++++++++++++++++++++++android:layout_width="wrap_content"
++++++++++++++++++++++++++++android:layout_height="wrap_content"
++++++++++++++++++++++++++++android:layout_gravity="top">

++++++++++++++++++++++++++++<ImageView
++++++++++++++++++++++++++++++++android:id="@%2Bid/ivAppIcon"
++++++++++++++++++++++++++++++++android:layout_width="@dimen/dp_36"
++++++++++++++++++++++++++++++++android:layout_height="@dimen/dp_36"
++++++++++++++++++++++++++++++++android:layout_gravity="top"
++++++++++++++++++++++++++++++++android:background="@mipmap/ic_launcher"+/>
++++++++++++++++++++++++</LinearLayout>

++++++++++++++++++++++++<LinearLayout
++++++++++++++++++++++++++++android:layout_width="wrap_content"
++++++++++++++++++++++++++++android:layout_height="wrap_content"
++++++++++++++++++++++++++++android:layout_gravity="top"
++++++++++++++++++++++++++++android:layout_marginLeft="@dimen/dp_10"
++++++++++++++++++++++++++++android:layout_weight="1"
++++++++++++++++++++++++++++android:orientation="vertical">

++++++++++++++++++++++++++++<TextView
++++++++++++++++++++++++++++++++android:id="@%2Bid/tvNotificationTitle"
++++++++++++++++++++++++++++++++android:layout_width="wrap_content"
++++++++++++++++++++++++++++++++android:layout_height="wrap_content"
++++++++++++++++++++++++++++++++android:text="Notification+Tile"
++++++++++++++++++++++++++++++++android:textStyle="bold"+/>

++++++++++++++++++++++++++++<TextView
++++++++++++++++++++++++++++++++android:id="@%2Bid/tvNotificationDescription"
++++++++++++++++++++++++++++++++android:layout_width="wrap_content"
++++++++++++++++++++++++++++++++android:layout_height="wrap_content"
++++++++++++++++++++++++++++++++android:layout_marginTop="@dimen/dp_5"
++++++++++++++++++++++++++++++++android:text="Notification+Description"+/>

++++++++++++++++++++++++</LinearLayout>

++++++++++++++++++++++++<LinearLayout
++++++++++++++++++++++++++++android:layout_width="wrap_content"
++++++++++++++++++++++++++++android:layout_height="wrap_content"
++++++++++++++++++++++++++++android:layout_gravity="top">

++++++++++++++++++++++++++++<TextView
++++++++++++++++++++++++++++++++android:id="@%2Bid/tvDateTime"
++++++++++++++++++++++++++++++++android:layout_width="wrap_content"
++++++++++++++++++++++++++++++++android:layout_height="wrap_content"
++++++++++++++++++++++++++++++++android:layout_alignParentRight="true"
++++++++++++++++++++++++++++++++android:layout_gravity="top"
++++++++++++++++++++++++++++++++android:text="09:50"+/>
++++++++++++++++++++++++</LinearLayout>
++++++++++++++++++++</LinearLayout>
++++++++++++++++</LinearLayout>

++++++++shape_bg_main_notification
++++++++<?xml+version="1.0"+encoding="utf-8"?>
++++++++<shape+xmlns:android="http://schemas.android.com/apk/res/android"
++++++++++++android:shape="rectangle">
++++++++++++<solid+android:color="@color/white"+/>

++++++++++++<corners+android:radius="@dimen/dp_6"+/>

++++++++</shape>



++++++++@SuppressLint("WrongConstant")
++++++++++++++++++++fun+showOfflineNotification(context:+Context,+title:+String,+description:+String)+{
++++++++++++++++++++++++val+NOTIFICATION_CHANNEL_ID+=+"com.myapp"
++++++++++++++++++++++++val+intent+=+Intent(context,+HomeActivity::class.java)
++++++++++++++++++++++++intent.putExtra("notification",+1)
++++++++++++++++++++++++intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)
++++++++++++++++++++++++if+(intent+!=+null)+{
++++++++++++++++++++++++++++val+pendingIntent+=+PendingIntent.getActivity(
++++++++++++++++++++++++++++++++context,+getTwoDigitRandomNo(),+intent,
++++++++++++++++++++++++++++++++PendingIntent.FLAG_ONE_SHOT
++++++++++++++++++++++++++++)
++++++++++++++++++++++++++++val+defaultSoundUri+=
++++++++++++++++++++++++++++++++RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION)

++++++++++++++++++++++++++++val+remoteCollapsedViews+=+RemoteViews(packageName,+R.layout.dialog_custom_notification)
++++++++++++++++++++++++++++remoteCollapsedViews.setTextViewText(R.id.tvNotificationTitle,+title)
++++++++++++++++++++++++++++remoteCollapsedViews.setTextViewText(R.id.tvNotificationDescription,+description)
++++++++++++++++++++++++++++remoteCollapsedViews.setTextViewText(R.id.tvDateTime,+getTime())

++++++++++++++++++++++++++++val+notificationBuilder+=+NotificationCompat.Builder(context)
++++++++++++++++++++++++++++notificationBuilder.setCustomBigContentView(remoteCollapsedViews)
++++++++++++++++++++++++++++notificationBuilder.setSmallIcon(R.mipmap.ic_launcher_round)
++++++++++++++++++++++++++++notificationBuilder.setLargeIcon(
++++++++++++++++++++++++++++++++BitmapFactory.de

++++++++codeResource(
++++++++++++++++++++++++++++++++++++++++context.resources,
++++++++++++++++++++++++++++++++++++++++R.mipmap.ic_launcher
++++++++++++++++++++++++++++++++++++)
++++++++++++++++++++++++++++++++)
++++++++++++++++++++++++++++++++notificationBuilder.setBadgeIconType(R.mipmap.ic_launcher_round)
++++++++++++++++++++++++++++++++notificationBuilder.setContentTitle(title)
++++++++++++++++++++++++++++++++if+(description+!=+null)+{
++++++++++++++++++++++++++++++++++++notificationBuilder.setContentText(description)
++++++++++++++++++++++++++++++++++++notificationBuilder.setStyle(
++++++++++++++++++++++++++++++++++++++++NotificationCompat.BigTextStyle().bigText(description)
++++++++++++++++++++++++++++++++++++)
++++++++++++++++++++++++++++++++}
++++++++++++++++++++++++++++++++notificationBuilder.setPriority(NotificationCompat.PRIORITY_HIGH)
++++++++++++++++++++++++++++++++notificationBuilder.setAutoCancel(true)
++++++++++++++++++++++++++++++++notificationBuilder.setSound(defaultSoundUri)
++++++++++++++++++++++++++++++++notificationBuilder.setVibrate(longArrayOf(1000,+1000))
++++++++++++++++++++++++++++++++notificationBuilder.setContentIntent(pendingIntent)

++++++++++++++++++++++++++++++++val+notificationManager+=
++++++++++++++++++++++++++++++++++++context.getSystemService(Context.NOTIFICATION_SERVICE)+as+NotificationManager
++++++++++++++++++++++++++++++++if+(Build.VERSION.SDK_INT+>=+Build.VERSION_CODES.O)+{
++++++++++++++++++++++++++++++++++++val+importance+=+NotificationManager.IMPORTANCE_MAX
++++++++++++++++++++++++++++++++++++val+notificationChannel+=+NotificationChannel(
++++++++++++++++++++++++++++++++++++++++NOTIFICATION_CHANNEL_ID,
++++++++++++++++++++++++++++++++++++++++"NOTIFICATION_CHANNEL_NAME",
++++++++++++++++++++++++++++++++++++++++importance
++++++++++++++++++++++++++++++++++++)
++++++++++++++++++++++++++++++++++++notificationChannel.enableLights(true)
++++++++++++++++++++++++++++++++++++notificationChannel.lightColor+=+Color.RED
++++++++++++++++++++++++++++++++++++notificationChannel.enableVibration(true)
++++++++++++++++++++++++++++++++++++notificationChannel.vibrationPattern+=+longArrayOf(1000,+1000)
++++++++++++++++++++++++++++++++++++assert(notificationManager+!=+null)
++++++++++++++++++++++++++++++++++++notificationBuilder.setChannelId(NOTIFICATION_CHANNEL_ID)
++++++++++++++++++++++++++++++++++++notificationManager.createNotificationChannel(notificationChannel)
++++++++++++++++++++++++++++++++}
++++++++++++++++++++++++++++++++notificationManager.notify(
++++++++++++++++++++++++++++++++++++getTwoDigitRandomNo()/*Id+of+Notification*/,
++++++++++++++++++++++++++++++++++++notificationBuilder.build()
++++++++++++++++++++++++++++++++)
++++++++++++++++++++++++++++}
++++++++++++++++++++++++}

++++++++++++++++++++++++private+fun+getTime():+String+{
++++++++++++++++++++++++++++val+calendar+=+Calendar.getInstance()
++++++++++++++++++++++++++++val+mdformat+=+SimpleDateFormat("HH:mm")
++++++++++++++++++++++++++++val+strDate+=+mdformat.format(calendar.time)
++++++++++++++++++++++++++++return+strDate
++++++++++++++++++++++++}

++++++++++++++++++++++++fun+getTwoDigitRandomNo():+Int+{
++++++++++++++++++++++++++++return+Random().nextInt(90)+%2B+10
++++++++++++++++++++++++}



++++++[1]:+https://me.stack.imgur.com/rQFP8.png


++[1]:+https://me.stack.imgur.com/fKM9C.png|165192|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/3b2a43cf9d8925e6572606f5ad9eb620.png|imageAlt^0|0|0|1|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Z|8|@]|9|@$E|10|F|11|1|12]]|A|$]]|$1|G|3|H|5|6|7|13|8|@]|9|@]|A|$]]|$1|I|3|J|5|K|7|14|8|@]|9|@]|A|$L|M]]|$1|N|3|O|5|K|7|15|8|@]|9|@]|A|$L|M]]|$1|P|3|-4|5|6|7|16|8|@]|9|@]|A|$]]]|Q|$R|$5|S|T|U|A|$V|W|X|-4]]]]

<a href="https://i.stack.imgur.com/f9TTP.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/f9TTP.png" alt="enter image description here"></a>Using Kotlin make custom notification 
 dialog_custom_notification
 
 

<pre><code> &lt;LinearLayout
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:layout_margin="@dimen/dp_10"
 android:background="@drawable/shape_bg_main_notification"
 android:gravity="center"
 android:orientation="horizontal"
 android:padding="@dimen/dp_10"&gt;

 &lt;LinearLayout
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_gravity="top"&gt;

 &lt;ImageView
 android:id="@+id/ivAppIcon"
 android:layout_width="@dimen/dp_36"
 android:layout_height="@dimen/dp_36"
 android:layout_gravity="top"
 android:background="@mipmap/ic_launcher" /&gt;
 &lt;/LinearLayout&gt;

 &lt;LinearLayout
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_gravity="top"
 android:layout_marginLeft="@dimen/dp_10"
 android:layout_weight="1"
 android:orientation="vertical"&gt;

 &lt;TextView
 android:id="@+id/tvNotificationTitle"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:text="Notification Tile"
 android:textStyle="bold" /&gt;

 &lt;TextView
 android:id="@+id/tvNotificationDescription"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_marginTop="@dimen/dp_5"
 android:text="Notification Description" /&gt;

 &lt;/LinearLayout&gt;

 &lt;LinearLayout
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_gravity="top"&gt;

 &lt;TextView
 android:id="@+id/tvDateTime"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentRight="true"
 android:layout_gravity="top"
 android:text="09:50" /&gt;
 &lt;/LinearLayout&gt;
 &lt;/LinearLayout&gt;
 &lt;/LinearLayout&gt;

 shape_bg_main_notification
 &lt;?xml version="1.0" encoding="utf-8"?&gt;
 &lt;shape xmlns:android="http://schemas.android.com/apk/res/android"
 android:shape="rectangle"&gt;
 &lt;solid android:color="@color/white" /&gt;

 &lt;corners android:radius="@dimen/dp_6" /&gt;

 &lt;/shape&gt;



 @SuppressLint("WrongConstant")
 fun showOfflineNotification(context: Context, title: String, description: String) {
 val NOTIFICATION_CHANNEL_ID = "com.myapp"
 val intent = Intent(context, HomeActivity::class.java)
 intent.putExtra("notification", 1)
 intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)
 if (intent != null) {
 val pendingIntent = PendingIntent.getActivity(
 context, getTwoDigitRandomNo(), intent,
 PendingIntent.FLAG_ONE_SHOT
 )
 val defaultSoundUri =
 RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION)

 val remoteCollapsedViews = RemoteViews(packageName, R.layout.dialog_custom_notification)
 remoteCollapsedViews.setTextViewText(R.id.tvNotificationTitle, title)
 remoteCollapsedViews.setTextViewText(R.id.tvNotificationDescription, description)
 remoteCollapsedViews.setTextViewText(R.id.tvDateTime, getTime())

 val notificationBuilder = NotificationCompat.Builder(context)
 notificationBuilder.setCustomBigContentView(remoteCollapsedViews)
 notificationBuilder.setSmallIcon(R.mipmap.ic_launcher_round)
 notificationBuilder.setLargeIcon(
 BitmapFactory.de

 codeResource(
 context.resources,
 R.mipmap.ic_launcher
 )
 )
 notificationBuilder.setBadgeIconType(R.mipmap.ic_launcher_round)
 notificationBuilder.setContentTitle(title)
 if (description != null) {
 notificationBuilder.setContentText(description)
 notificationBuilder.setStyle(
 NotificationCompat.BigTextStyle().bigText(description)
 )
 }
 notificationBuilder.setPriority(NotificationCompat.PRIORITY_HIGH)
 notificationBuilder.setAutoCancel(true)
 notificationBuilder.setSound(defaultSoundUri)
 notificationBuilder.setVibrate(longArrayOf(1000, 1000))
 notificationBuilder.setContentIntent(pendingIntent)

 val notificationManager =
 context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
 if (Build.VERSION.SDK_INT &gt;= Build.VERSION_CODES.O) {
 val importance = NotificationManager.IMPORTANCE_MAX
 val notificationChannel = NotificationChannel(
 NOTIFICATION_CHANNEL_ID,
 "NOTIFICATION_CHANNEL_NAME",
 importance
 )
 notificationChannel.enableLights(true)
 notificationChannel.lightColor = Color.RED
 notificationChannel.enableVibration(true)
 notificationChannel.vibrationPattern = longArrayOf(1000, 1000)
 assert(notificationManager != null)
 notificationBuilder.setChannelId(NOTIFICATION_CHANNEL_ID)
 notificationManager.createNotificationChannel(notificationChannel)
 }
 notificationManager.notify(
 getTwoDigitRandomNo()/*Id of Notification*/,
 notificationBuilder.build()
 )
 }
 }

 private fun getTime(): String {
 val calendar = Calendar.getInstance()
 val mdformat = SimpleDateFormat("HH:mm")
 val strDate = mdformat.format(calendar.time)
 return strDate
 }

 fun getTwoDigitRandomNo(): Int {
 return Random().nextInt(90) + 10
 }



 [1]: https://me.stack.imgur.com/rQFP8.png


 [1]: https://me.stack.imgur.com/fKM9C.png
</code></pre>

I wanted to create a Notification including some controls. Since text and controls are small with default notification size (64dp), i wanted have it larger than default size. 
It is possible to create larger notifications, and I think it is possible to have a custom layout, too, but I don't know how.

To be more specific, the following screenshot shows the notification from spotify (image take from <a href="http://androidauthority.com/spotify-android-notifications-controls-233010/" rel="noreferrer">here</a>): <img src="https://i.stack.imgur.com/XEfAQ.jpg" alt="Spotify notification"> 

As you can see, the size is bigger than default. Further, it has some kind of ImageButtons without text - if you use <a href="http://developer.android.com/reference/android/app/Notification.Builder.html#addAction%28int,%20java.lang.CharSequence,%20android.app.PendingIntent%29" rel="noreferrer">Notification.Builder.addAction()</a>, you may provide an icon but also need to provide a CharSequence as a description - if you leave the description empty, there will still be space reserved for the text and if you pass null, it will crash.

Can anybody tell me how to create a big notification with a custom layout? 

Thanks

Create Custom Big Notifications

Kotlin

我想创建一个包含一些控件的通知。由于文本和控件较小，默认通知大小(64dp)，我希望它大于默认大小。可以创建更大的通知，我认为也可以有一个自定义的布局，但我不知道怎么做。更具体地说，下面的屏幕截图显示了来自spotify的通知(图片来自)：如您所见，大小大于默认大小。此外，它有某种没有文本的ImageButtons -...

问创建自定义大通知
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