Java 图标未显示在操作栏上
我正在浏览谷歌的教程,但不知道如何在操作栏上放置搜索图标 这是主要的_activity_actions.xml代码:-Java 图标未显示在操作栏上,java,android,xml,Java,Android,Xml,我正在浏览谷歌的教程,但不知道如何在操作栏上放置搜索图标 这是主要的_activity_actions.xml代码:- <menu xmlns:android="http://schemas.android.com/apk/res/android" > <!-- Search, should appear as action button --> <item android:id="@+id/action_search" android
<menu xmlns:android="http://schemas.android.com/apk/res/android" >
<!-- Search, should appear as action button -->
<item android:id="@+id/action_search"
android:orderInCategory="100"
android:icon="@drawable/ic_action_search"
android:title="@string/action_search"
android:showAsAction="always" />
<!-- Settings, should always be in the overflow -->
<item android:id="@+id/action_settings"
android:title="@string/action_settings"
android:showAsAction="never" />
</menu>
Manifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.myfirstapp"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="7"
android:targetSdkVersion="19" />
<application
android:allowBackup="true"
android:theme="@style/Theme.AppCompat.Light"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name="com.example.myfirstapp.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.example.myfirstapp.DisplayMessageActivity"
android:label="@string/title_activity_display_message"
android:parentActivityName="com.example.myfirstapp.MainActivity" >
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="com.example.myfirstapp.MainActivity" />
</activity>
</application>
</manifest>
我已经看到了一些答案,并张贴了一个堆栈溢出,并尝试了他们,但仍然没有工作
当我尝试运行时,搜索图标从未显示
有人能建议怎么做吗?在activity\u action.xml中
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:(YOUR_PROJECT_NAME)="http://schemas.android.com/apk/res-auto"
>
<!-- Search, should appear as action button -->
<item android:id="@+id/action_search"
android:orderInCategory="100"
android:icon="@drawable/ic_action_search"
android:title="@string/action_search"
YOUR_PROJECT_NAME:showAsAction="always" />
您看到了吗?我一直在使用它作为参考,但从未检查过它。请尝试使用包名而不是项目名等待。。我忘了把项目名称放在最后。。。现在它起作用了。。但我不明白当您使用支持库时如何使用android:ShowAsAction被支持库忽略,因此您必须定义自定义名称空间
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:(YOUR_PROJECT_NAME)="http://schemas.android.com/apk/res-auto"
>
<!-- Search, should appear as action button -->
<item android:id="@+id/action_search"
android:orderInCategory="100"
android:icon="@drawable/ic_action_search"
android:title="@string/action_search"
YOUR_PROJECT_NAME:showAsAction="always" />