blocks|key|275891|text|请尝试查看这些问题的答案，特别是第二个问题，其中包含示例代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|275892|How+to+implement+dynamic+values+on+menu+item+in+Android|offset|length|275893|How+to+get+text+on+an+ActionBar+Icon?|275894|在我看来，您需要创建自己的自定义ActionView实现。另一种方法可能是自定义Drawable。请注意，似乎没有针对操作栏的通知计数的本机实现。|style|CODE|275895|编辑:您正在寻找的答案，带有代码:带有sample+implementation的Custom+Notification+View|275896|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/13560526/how-to-implement-dynamic-values-on-menu-item-in-android|1|https://stackoverflow.com/questions/13288989/how-to-get-text-on-an-actionbar-icon/16648170|2|https://code.google.com/p/motivatormaker-android|3|https://stackoverflow.com/questions/9033367/custom-notification-view^0|0|0|1J|0|0|0|11|1|0|G|A|14|8|0|J|L|2|15|O|3|0^^$0|@$1|2|3|4|5|6|7|11|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|12|8|@]|9|@$D|13|E|14|1|15]]|A|$]]|$1|F|3|G|5|6|7|16|8|@]|9|@$D|17|E|18|1|19]]|A|$]]|$1|H|3|I|5|6|7|1A|8|@$D|1B|E|1C|J|K]|$D|1D|E|1E|J|K]]|9|@]|A|$]]|$1|L|3|M|5|6|7|1F|8|@]|9|@$D|1G|E|1H|1|1I]|$D|1J|E|1K|1|1L]]|A|$]]|$1|N|3|-4|5|6|7|1M|8|@]|9|@]|A|$]]]|O|$P|$5|Q|R|S|A|$T|U]]|V|$5|Q|R|S|A|$T|W]]|X|$5|Q|R|S|A|$T|Y]]|Z|$5|Q|R|S|A|$T|10]]]]

Try looking at the answers to these questions, particularly the second one which has sample code:

<a href="https://stackoverflow.com/questions/13560526/how-to-implement-dynamic-values-on-menu-item-in-android">How to implement dynamic values on menu item in Android</a>

<a href="https://stackoverflow.com/questions/13288989/how-to-get-text-on-an-actionbar-icon/16648170">How to get text on an ActionBar Icon?</a>

From what I see, You'll need to create your own custom <code>ActionView</code> implementation. An alternative might be a custom <code>Drawable</code>. Note that there appears to be no native implementation of a notification count for the Action Bar.

EDIT: The answer you were looking for, with code: <a href="https://stackoverflow.com/questions/9033367/custom-notification-view">Custom Notification View</a> with <a href="https://code.google.com/p/motivatormaker-android" rel="nofollow noreferrer">sample implementation</a>

blocks|key|59431|text|我不确定这是不是最好的解决方案，但它是我需要的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|59432|如果您知道为了提高性能或质量需要进行哪些更改，请告诉我。在我的例子中，我有一个按钮。|59433|我的菜单上的自定义项目-+main.xml|59434|<item
++++android:id="@%2Bid/badge"
++++android:actionLayout="@layout/feed_update_count"
++++android:icon="@drawable/shape_notification"
++++android:showAsAction="always">
</item>|code-block|syntax|javascript|59435|自定义形状可绘制(背景正方形)-+shape_notification.xml|59436|<?xml+version="1.0"+encoding="utf-8"?>
<shape+xmlns:android="http://schemas.android.com/apk/res/android"
+++android:shape="rectangle">
++++<stroke+android:color="#22000000"+android:width="2dp"/>
++++<corners+android:radius="5dp"+/>
++++<solid+android:color="#CC0001"/>
</shape>|59437|我的视图的布局-+feed_update_count.xml|59438|<?xml+version="1.0"+encoding="utf-8"?>
<Button+xmlns:android="http://schemas.android.com/apk/res/android"
+++++android:id="@%2Bid/notif_count"
+++++android:layout_width="wrap_content"
+++++android:layout_height="wrap_content"
+++++android:minWidth="32dp"
+++++android:minHeight="32dp"
+++++android:background="@drawable/shape_notification"
+++++android:text="0"
+++++android:textSize="16sp"
+++++android:textColor="@android:color/white"
+++++android:gravity="center"
+++++android:padding="2dp"
+++++android:singleLine="true">++++
</Button>|59439|MainActivity+-设置和更新我的视图|59440|static+Button+notifCount;
static+int+mNotifCount+=+0;++++

@Override
public+boolean+onCreateOptionsMenu(Menu+menu)+{
++++MenuInflater+inflater+=+getSupportMenuInflater();
++++inflater.inflate(R.menu.main,+menu);

++++View+count+=+menu.findItem(R.id.badge).getActionView();
++++notifCount+=+(Button)+count.findViewById(R.id.notif_count);
++++notifCount.setText(String.valueOf(mNotifCount));
++++return+super.onCreateOptionsMenu(menu);
}

private+void+setNotifCount(int+count){
++++mNotifCount+=+count;
++++invalidateOptionsMenu();
}|59441|entityMap^0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Z|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|10|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|11|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|12|8|@]|9|@]|A|$]]|$1|M|3|N|5|H|7|13|8|@]|9|@]|A|$I|J]]|$1|O|3|P|5|6|7|14|8|@]|9|@]|A|$]]|$1|Q|3|R|5|H|7|15|8|@]|9|@]|A|$I|J]]|$1|S|3|T|5|6|7|16|8|@]|9|@]|A|$]]|$1|U|3|V|5|H|7|17|8|@]|9|@]|A|$I|J]]|$1|W|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|X|$]]

I am not sure if this is the best solution or not, but it is what I need.

Please tell me if you know what is need to be changed for better performance or quality. In my case, I have a button.

Custom item on my menu - main.xml

<pre><code>&lt;item
 android:id="@+id/badge"
 android:actionLayout="@layout/feed_update_count"
 android:icon="@drawable/shape_notification"
 android:showAsAction="always"&gt;
&lt;/item&gt;
</code></pre>

Custom shape drawable (background square) - shape_notification.xml

<pre><code>&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;stroke android:color="#22000000" android:width="2dp"/&gt;
 &lt;corners android:radius="5dp" /&gt;
 &lt;solid android:color="#CC0001"/&gt;
&lt;/shape&gt;
</code></pre>

Layout for my view - feed_update_count.xml

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;Button xmlns:android="http://schemas.android.com/apk/res/android"
 android:id="@+id/notif_count"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:minWidth="32dp"
 android:minHeight="32dp"
 android:background="@drawable/shape_notification"
 android:text="0"
 android:textSize="16sp"
 android:textColor="@android:color/white"
 android:gravity="center"
 android:padding="2dp"
 android:singleLine="true"&gt; 
&lt;/Button&gt;
</code></pre>

MainActivity - setting and updating my view

<pre><code>static Button notifCount;
static int mNotifCount = 0; 

@Override
public boolean onCreateOptionsMenu(Menu menu) {
 MenuInflater inflater = getSupportMenuInflater();
 inflater.inflate(R.menu.main, menu);

 View count = menu.findItem(R.id.badge).getActionView();
 notifCount = (Button) count.findViewById(R.id.notif_count);
 notifCount.setText(String.valueOf(mNotifCount));
 return super.onCreateOptionsMenu(menu);
}

private void setNotifCount(int count){
 mNotifCount = count;
 invalidateOptionsMenu();
}
</code></pre>

blocks|key|59448|text|使用工具栏时：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|59449|....
private+void+InitToolbar()+{
++++toolbar+=+(Toolbar)+findViewById(R.id.my_awesome_toolbar);
++++toolbartitle+=+(TextView)+findViewById(R.id.titletool);
++++toolbar.inflateMenu(R.menu.show_post);
++++toolbar.setOnMenuItemClickListener(this);
++++Menu+menu+=+toolbar.getMenu();
++++MenuItem+menu_comments+=+menu.findItem(R.id.action_comments);
++++MenuItemCompat
++++++++++++.setActionView(menu_comments,+R.layout.menu_commentscount);
++++View+v+=+MenuItemCompat.getActionView(menu_comments);
++++v.setOnClickListener(new+OnClickListener()+{

++++++++@Override
++++++++public+void+onClick(View+arg0)+{
++++++++++++//+Your+Action
++++++++}
++++});
++++comment_count+=+(TextView)+v.findViewById(R.id.count);
}|code-block|syntax|javascript|59450|并在加载数据时调用refreshMenu()：|59451|private+void+refreshMenu()+{
++++comment_count.setVisibility(View.VISIBLE);
++++comment_count.setText(""+%2B+post_data.getComment_count());
}|59452|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

When you use toolbar:

<pre><code>....
private void InitToolbar() {
 toolbar = (Toolbar) findViewById(R.id.my_awesome_toolbar);
 toolbartitle = (TextView) findViewById(R.id.titletool);
 toolbar.inflateMenu(R.menu.show_post);
 toolbar.setOnMenuItemClickListener(this);
 Menu menu = toolbar.getMenu();
 MenuItem menu_comments = menu.findItem(R.id.action_comments);
 MenuItemCompat
 .setActionView(menu_comments, R.layout.menu_commentscount);
 View v = MenuItemCompat.getActionView(menu_comments);
 v.setOnClickListener(new OnClickListener() {

 @Override
 public void onClick(View arg0) {
 // Your Action
 }
 });
 comment_count = (TextView) v.findViewById(R.id.count);
}
</code></pre>

and in your load data call refreshMenu():

<pre><code>private void refreshMenu() {
 comment_count.setVisibility(View.VISIBLE);
 comment_count.setText("" + post_data.getComment_count());
}
</code></pre>

blocks|key|276038|text|我找到了更好的方法。如果你想使用这样的东西|type|unstyled|depth|inlineStyleRanges|entityRanges|data|276039|​|276040|📷|atomic|offset|length|276041|276042|使用此依赖项|276043|+++compile+'com.nex3z:notification-badge:0.1.0'|code-block|syntax|javascript|276044|在drawable中创建一个xml文件并将其另存为Badge.xml|276045|<?xml+version="1.0"+encoding="utf-8"?>
++<layer-list+xmlns:android="http://schemas.android.com/apk/res/android">

<item>
++++<shape+android:shape="oval">
++++++++<solid+android:color="#66000000"/>
++++++++<size+android:width="30dp"+android:height="40dp"/>
++++</shape>
</item>
<item+android:bottom="1dp"+android:right="0.6dp">
++++<shape+android:shape="oval">
++++++++<solid+android:color="@color/Error_color"/>
++++++++<size+android:width="20dp"+android:height="20dp"/>
++++</shape>
</item>
</layer-list>|276046|现在，无论您想在哪里使用该徽章，都可以在xml中使用以下代码。在这个帮助下，你将能够在你的图像或任何东西的右上角看到那个徽章。|276047|++<com.nex3z.notificationbadge.NotificationBadge
++++android:id="@%2Bid/badge"
++++android:layout_toRightOf="@id/Your_ICON/IMAGE"
++++android:layout_alignTop="@id/Your_ICON/IMAGE"
++++android:layout_marginLeft="-16dp"
++++android:layout_marginTop="-8dp"
++++android:layout_width="28dp"
++++android:layout_height="28dp"
++++app:badgeBackground="@drawable/Badge"
++++app:maxTextLength="2"
++++></com.nex3z.notificationbadge.NotificationBadge>|276048|现在终于在yourFile.java上使用这两个简单的东西..1)定义|276049|+NotificationBadge+mBadge;|276050|2)在你的循环或任何计算这个数字的地方，使用这个：|276051|+mBadge.setNumber(your_LoopCount);|276052|在这里，mBadge.setNumber(0)不会显示任何内容。|style|CODE|276053|希望这能有所帮助。|276054|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/23752dc6ac728570469d71200d7f0632.png|imageAlt^0|0|0|0|1|0|0|0|0|0|0|0|0|0|0|0|0|0|4|J|0|0^^$0|@$1|2|3|4|5|6|7|1L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1M|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|1N|8|@]|9|@$G|1O|H|1P|1|1Q]]|A|$]]|$1|I|3|C|5|6|7|1R|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|1S|8|@]|9|@]|A|$]]|$1|L|3|M|5|N|7|1T|8|@]|9|@]|A|$O|P]]|$1|Q|3|R|5|6|7|1U|8|@]|9|@]|A|$]]|$1|S|3|T|5|N|7|1V|8|@]|9|@]|A|$O|P]]|$1|U|3|V|5|6|7|1W|8|@]|9|@]|A|$]]|$1|W|3|X|5|N|7|1X|8|@]|9|@]|A|$O|P]]|$1|Y|3|Z|5|6|7|1Y|8|@]|9|@]|A|$]]|$1|10|3|11|5|N|7|1Z|8|@]|9|@]|A|$O|P]]|$1|12|3|13|5|6|7|20|8|@]|9|@]|A|$]]|$1|14|3|15|5|N|7|21|8|@]|9|@]|A|$O|P]]|$1|16|3|17|5|6|7|22|8|@$G|23|H|24|18|19]]|9|@]|A|$]]|$1|1A|3|1B|5|6|7|25|8|@]|9|@]|A|$]]|$1|1C|3|-4|5|6|7|26|8|@]|9|@]|A|$]]]|1D|$1E|$5|1F|1G|1H|A|$1I|1J|1K|-4]]]]

I found better way to do it. 
if you want to use something like this 

<a href="https://i.stack.imgur.com/J6pTo.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/J6pTo.png" alt="enter image description here"></a>

Use this dependency

<pre><code> compile 'com.nex3z:notification-badge:0.1.0'
</code></pre>

create one xml file in drawable and Save it as Badge.xml

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
 &lt;layer-list xmlns:android="http://schemas.android.com/apk/res/android"&gt;

&lt;item&gt;
 &lt;shape android:shape="oval"&gt;
 &lt;solid android:color="#66000000"/&gt;
 &lt;size android:width="30dp" android:height="40dp"/&gt;
 &lt;/shape&gt;
&lt;/item&gt;
&lt;item android:bottom="1dp" android:right="0.6dp"&gt;
 &lt;shape android:shape="oval"&gt;
 &lt;solid android:color="@color/Error_color"/&gt;
 &lt;size android:width="20dp" android:height="20dp"/&gt;
 &lt;/shape&gt;
&lt;/item&gt;
&lt;/layer-list&gt;
</code></pre>

Now wherever you want to use that badge use following code in xml.
with the help of this you will be able to see that badge on top-right corner of your image or anything.

<pre><code> &lt;com.nex3z.notificationbadge.NotificationBadge
 android:id="@+id/badge"
 android:layout_toRightOf="@id/Your_ICON/IMAGE"
 android:layout_alignTop="@id/Your_ICON/IMAGE"
 android:layout_marginLeft="-16dp"
 android:layout_marginTop="-8dp"
 android:layout_width="28dp"
 android:layout_height="28dp"
 app:badgeBackground="@drawable/Badge"
 app:maxTextLength="2"
 &gt;&lt;/com.nex3z.notificationbadge.NotificationBadge&gt;
</code></pre>

Now finally on yourFile.java use this 2 simple thing..
1) Define 

<pre><code> NotificationBadge mBadge;
</code></pre>

2) where your loop or anything which is counting this number use this:

<pre><code> mBadge.setNumber(your_LoopCount);
</code></pre>

here, <code>mBadge.setNumber(0)</code> will not show anything.

Hope this help.

blocks|key|276086|text|我找到了一个非常好的解决方案here，我正在使用它与kotlin。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|276087|首先，您必须在可绘制文件夹中创建item_count.xml|style|CODE|276088|<?xml+version="1.0"+encoding="utf-8"?>+<shape+xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<corners+android:radius="8dp"+/>
<solid+android:color="#f20000"+/>
<stroke
++++android:width="2dip"
++++android:color="#FFF"+/>
<padding
++++android:bottom="5dp"
++++android:left="5dp"
++++android:right="5dp"
++++android:top="5dp"+/>
</shape>|code-block|syntax|javascript|276089|在您的Activity_Main布局中，如下所示：|276090|<RelativeLayout
++++++++++++++++++++android:id="@%2Bid/badgeLayout"
++++++++++++++++++++android:layout_width="40dp"
++++++++++++++++++++android:layout_height="40dp"
++++++++++++++++++++android:layout_toRightOf="@%2Bid/badge_layout1"
++++++++++++++++++++android:layout_gravity="end%7Ccenter_vertical"
++++++++++++++++++++android:layout_marginEnd="5dp">

++++++++++++++++<RelativeLayout
++++++++++++++++++++++++android:id="@%2Bid/relative_layout1"
++++++++++++++++++++++++android:layout_width="wrap_content"
++++++++++++++++++++++++android:layout_height="wrap_content">

++++++++++++++++++++<Button
++++++++++++++++++++++++++++android:id="@%2Bid/btnBadge"
++++++++++++++++++++++++++++android:layout_width="match_parent"
++++++++++++++++++++++++++++android:layout_height="match_parent"
++++++++++++++++++++++++++++android:background="@mipmap/ic_notification"+/>

++++++++++++++++</RelativeLayout>

++++++++++++++++<TextView
++++++++++++++++++++++++android:id="@%2Bid/txtBadge"
++++++++++++++++++++++++android:layout_width="18dp"
++++++++++++++++++++++++android:layout_height="18dp"
++++++++++++++++++++++++android:layout_alignRight="@id/relative_layout1"
++++++++++++++++++++++++android:background="@drawable/item_count"
++++++++++++++++++++++++android:text="22"
++++++++++++++++++++++++android:textColor="#FFF"
++++++++++++++++++++++++android:textSize="7sp"
++++++++++++++++++++++++android:textStyle="bold"
++++++++++++++++++++++++android:gravity="center"/>

++++++++++++</RelativeLayout>|276091|你可以像这样修改：|276092|btnBadge.setOnClickListener+{+view+->
++++++++Snackbar.make(view,"badge+click",+Snackbar.LENGTH_LONG)+.setAction("Action",+null).show()
++++++++txtBadge.text+=+"0"
++++}|276093|entityMap|0|LINK|mutability|MUTABLE|url|https://dzone.com/articles/how-to-create-badges-item-counts-in-android^0|E|4|0|0|G|E|0|0|3|D|0|0|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@$A|13|B|14|1|15]]|C|$]]|$1|D|3|E|5|6|7|16|8|@$A|17|B|18|F|G]]|9|@]|C|$]]|$1|H|3|I|5|J|7|19|8|@]|9|@]|C|$K|L]]|$1|M|3|N|5|6|7|1A|8|@$A|1B|B|1C|F|G]]|9|@]|C|$]]|$1|O|3|P|5|J|7|1D|8|@]|9|@]|C|$K|L]]|$1|Q|3|R|5|6|7|1E|8|@]|9|@]|C|$]]|$1|S|3|T|5|J|7|1F|8|@]|9|@]|C|$K|L]]|$1|U|3|-4|5|6|7|1G|8|@]|9|@]|C|$]]]|V|$W|$5|X|Y|Z|C|$10|11]]]]

I found a very good solution <a href="https://dzone.com/articles/how-to-create-badges-item-counts-in-android" rel="nofollow noreferrer">here</a>, I'm using it with kotlin.

First, in the drawable folder you have to create <code>item_count.xml</code>:

<pre><code>&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;corners android:radius="8dp" /&gt;
&lt;solid android:color="#f20000" /&gt;
&lt;stroke
 android:width="2dip"
 android:color="#FFF" /&gt;
&lt;padding
 android:bottom="5dp"
 android:left="5dp"
 android:right="5dp"
 android:top="5dp" /&gt;
&lt;/shape&gt;
</code></pre>

In your <code>Activity_Main</code> Layout some like:

<pre><code>&lt;RelativeLayout
 android:id="@+id/badgeLayout"
 android:layout_width="40dp"
 android:layout_height="40dp"
 android:layout_toRightOf="@+id/badge_layout1"
 android:layout_gravity="end|center_vertical"
 android:layout_marginEnd="5dp"&gt;

 &lt;RelativeLayout
 android:id="@+id/relative_layout1"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"&gt;

 &lt;Button
 android:id="@+id/btnBadge"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:background="@mipmap/ic_notification" /&gt;

 &lt;/RelativeLayout&gt;

 &lt;TextView
 android:id="@+id/txtBadge"
 android:layout_width="18dp"
 android:layout_height="18dp"
 android:layout_alignRight="@id/relative_layout1"
 android:background="@drawable/item_count"
 android:text="22"
 android:textColor="#FFF"
 android:textSize="7sp"
 android:textStyle="bold"
 android:gravity="center"/&gt;

 &lt;/RelativeLayout&gt;
</code></pre>

And you can modify like:

<pre><code>btnBadge.setOnClickListener { view -&gt;
 Snackbar.make(view,"badge click", Snackbar.LENGTH_LONG) .setAction("Action", null).show()
 txtBadge.text = "0"
 }
</code></pre>

Is there a android standard badge or method to show action bar notification icon with a count like on Google examples?

<img src="https://i.stack.imgur.com/1E6is.png" alt="count 3 on picture">

If not, then what is the best way to make it? 
I'm new to android, please help.

Actionbar notification count icon (badge) like Google has

有没有android标准的徽章或方法来显示带有计数的操作栏通知图标，就像谷歌的例子一样？​​如果不是，那么最好的方法是什么？我是android新手，请帮帮忙。

问像Google一样的Actionbar通知计数图标(徽章)
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