blocks|key|621599|text|当你说“溢出”菜单时，你是指最后出现的三个点，表示有更多的项目...或者你指的是底部显示的溢出项的拆分操作栏？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|621600|如果您指的是拆分操作栏，则应将其添加到活动的清单文件中|621601|android:uiOptions="splitActionBarWhenNarrow"|code-block|syntax|javascript|621602|默认情况下，三点溢出菜单应该会自动发生，所以很难从上面提供的信息中判断出问题是什么。|621603|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|O|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

When you say "overflow" menu, do you mean the three dots that show up in the end to indicate that there are more items.... or do you mean the split actionbar that shows up in the bottom for overflow items?

If you mean the split action bar, you should add this to your activity's manifest file

<pre><code>android:uiOptions="splitActionBarWhenNarrow"
</code></pre>

By default, the three dots overflow menu should happen automatically, so it's hard to tell what the problem is from the information you provided above.

blocks|key|405999|text|在带有硬件菜单按钮的设备上(Galaxy+S3，顽固的三星...)通过使用硬件菜单按钮，溢出菜单的行为类似于“传统”菜单。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|406000|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|$]]

On devices with hardware menu buttons (Galaxy S3, stubborn as Samsung is...) the overflow menu behaves as the 'traditional' menu, by using the hardware menu button.

blocks|key|406067|text|如果你想要显示三个点，不管设备菜单按钮！然后，您可以在应用程序类的onCreate方法中调用此方法-|type|unstyled|depth|inlineStyleRanges|entityRanges|data|406068|private+void+makeActionOverflowMenuShown()+{
++++//devices+with+hardware+menu+button+(e.g.+Samsung+Note)+don't+show+action+overflow+menu
++++try+{
++++++++ViewConfiguration+config+=+ViewConfiguration.get(this);
++++++++Field+menuKeyField+=+ViewConfiguration.class.getDeclaredField("sHasPermanentMenuKey");
++++++++if+(menuKeyField+!=+null)+{
++++++++++++menuKeyField.setAccessible(true);
++++++++++++menuKeyField.setBoolean(config,+false);
++++++++}
++++}+catch+(Exception+e)+{
++++++++Log.d(TAG,+e.getLocalizedMessage());
++++}
}|code-block|syntax|javascript|406069|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|$]]

If you want to show the three dots, irrespective of device menu button! then you can call this method in your application class' onCreate method-

<pre><code>private void makeActionOverflowMenuShown() {
 //devices with hardware menu button (e.g. Samsung Note) don't show action overflow menu
 try {
 ViewConfiguration config = ViewConfiguration.get(this);
 Field menuKeyField = ViewConfiguration.class.getDeclaredField("sHasPermanentMenuKey");
 if (menuKeyField != null) {
 menuKeyField.setAccessible(true);
 menuKeyField.setBoolean(config, false);
 }
 } catch (Exception e) {
 Log.d(TAG, e.getLocalizedMessage());
 }
}
</code></pre>

blocks|key|406113|text|将xmlns:your_app_name="http://schemas.android.com/apk/res-auto"放在菜单标记内，而不是使用your_app_name:showAsAction="always"|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|406114|例如|406115|<item
++++android:id="@%2Bid/action_search"
++++android:icon="@drawable/icon_search"
++++android:title="@string/search"
++++your_app_name:showAsAction="ifRoom"/>|code-block|syntax|javascript|406116|​|406117|entityMap^0|1|1P|23|Z|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|V|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|W|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|X|8|@]|D|@]|E|$]]|$1|O|3|-4|5|6|7|Y|8|@]|D|@]|E|$]]]|P|$]]

Put <code>xmlns:your_app_name="http://schemas.android.com/apk/res-auto"</code> inside menu tag
and instead <code>android:showAsAction="always"</code> use <code>your_app_name:showAsAction="always"</code>

for eg 


<pre><code>&lt;item
 android:id="@+id/action_search"
 android:icon="@drawable/icon_search"
 android:title="@string/search"
 your_app_name:showAsAction="ifRoom"/&gt;
</code></pre>

blocks|key|621784|text|尝试将应用程序的主题从Theme.AppCompat.Light.DarkActionBar更改为Theme.AppCompat.Light|type|unstyled|depth|inlineStyleRanges|entityRanges|data|621785|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|$]]

Try changing the theme of the app from 
Theme.AppCompat.Light.DarkActionBar to Theme.AppCompat.Light

blocks|key|406199|text|要始终在actionbarcompat上显示操作溢出(三个点)：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|406200|在菜单文件中，示例：|406201|main.xml|406202|<menu+xmlns:android="http://schemas.android.com/apk/res/android"
++++xmlns:app="http://schemas.android.com/apk/res-auto"+>

++++<item
++++++++android:id="@%2Bid/action_settings"
++++++++android:title="@string/action_settings"
++++++++app:showAsAction="never"/>
++++<item
++++++++android:id="@%2Bid/action_about"
++++++++android:title="@string/action_about"
++++++++app:showAsAction="never"/>

</menu>|code-block|syntax|javascript|406203|在活动文件中：|406204|@Override
public+boolean+onCreateOptionsMenu(Menu+menu)+{
++++getMenuInflater().inflate(R.menu.main,+menu);
++++return+super.onCreateOptionsMenu(menu);
}|406205|它对我来说运行得很好。|406206|在Google+Nexus+S和三星S3上进行了测试。|406207|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|X|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|Y|8|@]|9|@]|A|$]]|$1|M|3|N|5|H|7|Z|8|@]|9|@]|A|$I|J]]|$1|O|3|P|5|6|7|10|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|11|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|T|$]]

To alway show action overflow (three dot) on actionbarcompat: 
in menu file, example: 
main.xml

<pre><code>&lt;menu xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:app="http://schemas.android.com/apk/res-auto" &gt;

 &lt;item
 android:id="@+id/action_settings"
 android:title="@string/action_settings"
 app:showAsAction="never"/&gt;
 &lt;item
 android:id="@+id/action_about"
 android:title="@string/action_about"
 app:showAsAction="never"/&gt;

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

and in activity file:

<pre><code>@Override
public boolean onCreateOptionsMenu(Menu menu) {
 getMenuInflater().inflate(R.menu.main, menu);
 return super.onCreateOptionsMenu(menu);
}
</code></pre>

It's worked fine for me. 
Tested on Google Nexus S, Samsung S3.

I have an action bar in my app with 3 items.

Only 2 can be displayed due to space issues, so I'd expect the first to be displayed and the rest to be displayed in the overflow.
However in practice only the first 2 items are shown and there is no overflow detectable.

Here is the relevant code:
list_menu.xml

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;menu xmlns:android="http://schemas.android.com/apk/res/android" &gt;
&lt;item android:id="@+id/menu_insert"
 android:icon="@android:drawable/ic_menu_add"
 android:title="@string/menu_insert" 
 android:showAsAction="ifRoom|withText"/&gt;
&lt;item android:id="@+id/menu_call"
 android:icon="@android:drawable/ic_menu_call"
 android:title="@string/menu_call" 
 android:showAsAction="ifRoom|withText"/&gt;
&lt;item android:id="@+id/menu_agenda"
 android:icon="@android:drawable/ic_menu_agenda"
 android:title="@string/menu_agenda" 
 android:showAsAction="ifRoom|withText"/&gt;
&lt;/menu&gt;
</code></pre>

Activity.java

<pre><code>public boolean onCreateOptionsMenu(Menu menu) {
 MenuInflater mi = getMenuInflater();
 mi.inflate(R.menu.list_menu, menu);
 return true;
}
</code></pre>

Android action bar not showing overflow

我的应用程序中有一个包含3个项目的动作栏。由于空间问题，只能显示2个，所以我希望显示第一个，其余的将显示在溢出中。然而，实际上只显示了前两个项目，并且没有检测到溢出。下面是相关代码: list_menu.xml<?xml version="1.0" encoding="utf-8"?><menu xmlns:andro...

问Android操作栏未显示溢出
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