Android的搜索查看不起作用 [英] Android SearchView does not work

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本文介绍了Android的搜索查看不起作用的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我试图更新所有的图书馆,但我仍然有错误。我能够运行在模拟器上的应用程序,但是当我出口APK和一个真正的Andr​​oid设备上运行,应用程序无法正常工作。

的minSdkVersion是8,targetSdkVersion是19。
请帮助!

menu.xml文件

 <菜单的xmlns:机器人=htt​​p://schemas.android.com/apk/res/android
        的xmlns:例如=htt​​p://schemas.android.com/apk/res-auto>    <项目
        机器人:ID =@ + ID / action_showTC
        机器人:orderInCategory =100
        机器人:showAsAction =从不
        机器人:标题=条款和条件/>    <项目机器人:ID =@ + ID / ACTION_SEARCH
          机器人:标题=搜索
          机器人:orderInCategory =100
          例如:showAsAction =ifRoom | collapseActionView
          例如:actionViewClass =android.support.v7.widget.SearchView/>&所述; /菜单>

搜索查看

  @覆盖
公共布尔onOptionsItemSelected(菜单项项){
    如果(item.getItemId()== R.id.action_showTC){
        startActivity(新意图(MainActivity.this,T_C.class));
        返回true;
    }其他{
        返回super.onOptionsItemSelected(项目);
    }
}@覆盖
公共布尔onCreateOptionsMenu(菜单菜单){    MenuInflater吹气= getMenuInflater();
    inflater.inflate(R.menu.main,菜单);    SearchManager的SearchManager的=(SearchManager的)getSystemService(Context.SEARCH_SERVICE);
    SupportMenuItem searchMenuItem =((SupportMenuItem)menu.findItem(R.id.action_search));
    搜索查看搜索查看=(搜索查看)searchMenuItem.getActionView();
    sea​​rchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));    返回super.onCreateOptionsMenu(菜单);
}

清单

 <活动机器人:名字=com.agehk.queue.SearchResultsActivity
        机器人:parentActivityName =com.agehk.queue.MainActivity>
        &所述;意图滤光器>
            <作用机器人:名字=android.intent.action.SEARCH/>
        &所述; /意图滤光器>        &所述;元数据
            机器人:名字=android.app.searchable
            机器人:资源=@ XML /搜索/>
    < /活性GT;

searchable.xml

 <?XML版本=1.0编码=UTF-8&GT?;
<搜索的xmlns:机器人=htt​​p://schemas.android.com/apk/res/android
    机器人:提示=搜索队列
    机器人:标签=@字符串/ APP_NAME/>

错误

  15 09-04:57:13.105:W / SupportMenuInflater(17184):无法实例化类:android.support.v7.widget.SearchView
09-04 15:57:13.105:W / SupportMenuInflater(17184):java.lang.NoSuchMethodException:其中,初始化> [类android.content.Context]
09-04 15:57:13.105:W / SupportMenuInflater(17184):在java.lang.Class.getConstructorOrMethod(Class.java:423)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在java.lang.Class.getConstructor(Class.java:397)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在android.support.v7.internal.view.f.a(来源不明)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在android.support.v7.internal.view.f.a(来源不明)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在android.support.v7.internal.view.f.b(来源不明)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在android.support.v7.internal.view.d.a(来源不明)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在android.support.v7.internal.view.d.inflate(来源不明)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在com.agehk.queue.MainActivity.onCreateOptionsMenu(来源不明)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在android.app.Activity.onCreatePanelMenu(Activity.java:2577)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在android.support.v4.app.j.onCreatePanelMenu(来源不明)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在android.support.v7.a.g.a(来源不明)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在android.support.v7.a.n.a(来源不明)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在android.support.v7.a.g.onCreatePanelMenu(来源不明)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在android.support.v7.a.o.onCreatePanelMenu(来源不明)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在com.android.internal.policy.impl.PhoneWindow preparePanel(PhoneWindow.java:414)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在com.android.internal.policy.impl.PhoneWindow.doInvalidatePanelMenu(PhoneWindow.java:777)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在com.android.internal.policy.impl.PhoneWindow $ 1.run(PhoneWindow.java:199)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在android.view.Choreographer $ CallbackRecord.run(Choreographer.java:835)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在android.view.Choreographer.doCallbacks(Choreographer.java:626)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在android.view.Choreographer.doFrame(Choreographer.java:589)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在android.view.Choreographer $ FrameDisplayEventReceiver.run(Choreographer.java:821)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在android.os.Handler.handleCallback(Handler.java:730)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在android.os.Handler.dispatchMessage(Handler.java:92)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在android.os.Looper.loop(Looper.java:150)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在android.app.ActivityThread.main(ActivityThread.java:5390)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在java.lang.reflect.Method.invokeNative(本机方法)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在java.lang.reflect.Method.invoke(Method.java:525)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:737)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
09-04 15:57:13.105:W / SupportMenuInflater(17184):在dalvik.system.NativeStart.main(本机方法)
09-04 15:57:13.105:D / AndroidRuntime(17184):关闭VM
09-04 15:57:13.105:W / dalvikvm(17184):主题ID = 1:螺纹未捕获的异常退出(组= 0x42f05500)
09-04 15:57:13.105:E / AndroidRuntime(17184):致命异常:主要
09-04 15:57:13.105:E / AndroidRuntime(17184):显示java.lang.NullPointerException
09-04 15:57:13.105:E / AndroidRuntime(17184):在com.agehk.queue.MainActivity.onCreateOptionsMenu(来源不明)
09-04 15:57:13.105:E / AndroidRuntime(17184):在android.app.Activity.onCreatePanelMenu(Activity.java:2577)
09-04 15:57:13.105:E / AndroidRuntime(17184):在android.support.v4.app.j.onCreatePanelMenu(来源不明)
09-04 15:57:13.105:E / AndroidRuntime(17184):在android.support.v7.a.g.a(来源不明)
09-04 15:57:13.105:E / AndroidRuntime(17184):在android.support.v7.a.n.a(来源不明)
09-04 15:57:13.105:E / AndroidRuntime(17184):在android.support.v7.a.g.onCreatePanelMenu(来源不明)
09-04 15:57:13.105:E / AndroidRuntime(17184):在android.support.v7.a.o.onCreatePanelMenu(来源不明)
09-04 15:57:13.105:E / AndroidRuntime(17184):在com.android.internal.policy.impl.PhoneWindow preparePanel(PhoneWindow.java:414)
09-04 15:57:13.105:E / AndroidRuntime(17184):在com.android.internal.policy.impl.PhoneWindow.doInvalidatePanelMenu(PhoneWindow.java:777)
09-04 15:57:13.105:E / AndroidRuntime(17184):在com.android.internal.policy.impl.PhoneWindow $ 1.run(PhoneWindow.java:199)
09-04 15:57:13.105:E / AndroidRuntime(17184):在android.view.Choreographer $ CallbackRecord.run(Choreographer.java:835)
09-04 15:57:13.105:E / AndroidRuntime(17184):在android.view.Choreographer.doCallbacks(Choreographer.java:626)
09-04 15:57:13.105:E / AndroidRuntime(17184):在android.view.Choreographer.doFrame(Choreographer.java:589)
09-04 15:57:13.105:E / AndroidRuntime(17184):在android.view.Choreographer $ FrameDisplayEventReceiver.run(Choreographer.java:821)
09-04 15:57:13.105:E / AndroidRuntime(17184):在android.os.Handler.handleCallback(Handler.java:730)
09-04 15:57:13.105:E / AndroidRuntime(17184):在android.os.Handler.dispatchMessage(Handler.java:92)
09-04 15:57:13.105:E / AndroidRuntime(17184):在android.os.Looper.loop(Looper.java:150)
09-04 15:57:13.105:E / AndroidRuntime(17184):在android.app.ActivityThread.main(ActivityThread.java:5390)
09-04 15:57:13.105:E / AndroidRuntime(17184):在java.lang.reflect.Method.invokeNative(本机方法)
09-04 15:57:13.105:E / AndroidRuntime(17184):在java.lang.reflect.Method.invoke(Method.java:525)
09-04 15:57:13.105:E / AndroidRuntime(17184):在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:737)
09-04 15:57:13.105:E / AndroidRuntime(17184):在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
09-04 15:57:13.105:E / AndroidRuntime(17184):在dalvik.system.NativeStart.main(本机方法)
09-04 15:57:13.115:D / BatteryStatsImpl(445):noteStopWakeLocked com.google.android.gms isFromForeground = FALSE
09-04 15:57:13.115:W / ActivityManager(445):强制完成活动com.agehk.queue / .MainActivity


解决方案

有关API 11日之前你应该初始化操作栏项目在兼容模式:

  @覆盖
    公共布尔onCreateOptionsMenu(菜单菜单){
        。getMenuInflater()膨胀(R.menu.main,菜单);
        SearchManager的SearchManager的=(SearchManager的)getSystemService(Context.SEARCH_SERVICE);
        菜单项searchMenuItem = menu.findItem(R.id.action_search);
        搜索查看搜索查看=(搜索查看)MenuItemCompat.getActionView(searchMenuItem);
        sea​​rchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));
        返回true;
    }

更新:结果
所以,我试图重现它的API 8模拟器和4.4奇巧。不幸的是,我的2.3.8的设备得到了砖砌前一阵子,所以在硬件低API无法检查。我可以建议你:结果
1.检查搜索查看从 android.support.v7.widget.SearchView进口; 结果
2.检查菜单资源是正确的:

 <菜单的xmlns:机器人=htt​​p://schemas.android.com/apk/res/android
    的xmlns:程序=htt​​p://schemas.android.com/apk/res-auto< -----------初始化兼容命名空间
    的xmlns:工具=htt​​p://schemas.android.com/tool​​s
    工具:上下文=MainActivity。>    <项目
        机器人:ID =@ + ID / action_showTC
        机器人:orderInCategory =100
        机器人:标题=@字符串/ TERMS_AND_CONDITIONS
        应用:showAsAction =从不/> < -----------使用兼容的命名空间    <项目机器人:ID =@ + ID / ACTION_SEARCH
          机器人:标题=@字符串/搜索
          机器人:orderInCategory =100< ----------使用不同的值
          应用:showAsAction =ifRoom | collapseActionView
          应用:actionViewClass =android.support.v7.widget.SearchView/>&所述; /菜单>

3。从 onCreateOptionsMenu 返回true,如果没有底层处理(Activity类没有子类)的

UPDATE2:心动不如行动!你可能从活动类扩展。应 ActioBarActivity :结果

 公共类MainActivity扩展ActionBarActivity {
...

I tried to update all the libraries, but i still got errors. I am able to run the app on the simulator, but when I export the APK and run it on a real android device, the app is not working.

MinSdkVersion is 8, targetSdkVersion is 19. Please help!!!

menu.xml

<menu xmlns:android="http://schemas.android.com/apk/res/android" 
        xmlns:example="http://schemas.android.com/apk/res-auto">

    <item
        android:id="@+id/action_showTC"
        android:orderInCategory="100"
        android:showAsAction="never"
        android:title="Terms and Conditions"/>

    <item android:id="@+id/action_search"
          android:title="Search"
          android:orderInCategory="100"
          example:showAsAction="ifRoom|collapseActionView"
          example:actionViewClass="android.support.v7.widget.SearchView"/>

</menu>

SearchView

@Override
public boolean onOptionsItemSelected(MenuItem item){
    if(item.getItemId() == R.id.action_showTC){
        startActivity(new Intent(MainActivity.this, T_C.class));
        return true;
    }else{
        return super.onOptionsItemSelected(item);
    }
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {

    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.main, menu);

    SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
    SupportMenuItem searchMenuItem = ((SupportMenuItem) menu.findItem(R.id.action_search));
    SearchView searchView = (SearchView) searchMenuItem.getActionView();
    searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));

    return super.onCreateOptionsMenu(menu);
}

manifest

    <activity android:name="com.agehk.queue.SearchResultsActivity"
        android:parentActivityName="com.agehk.queue.MainActivity" >
        <intent-filter>
            <action android:name="android.intent.action.SEARCH" />
        </intent-filter>

        <meta-data
            android:name="android.app.searchable"
            android:resource="@xml/searchable" />
    </activity>

searchable.xml

<?xml version="1.0" encoding="utf-8"?>
<searchable xmlns:android="http://schemas.android.com/apk/res/android"
    android:hint="Search Queue"
    android:label="@string/app_name" />

Error

09-04 15:57:13.105: W/SupportMenuInflater(17184): Cannot instantiate class: android.support.v7.widget.SearchView
09-04 15:57:13.105: W/SupportMenuInflater(17184): java.lang.NoSuchMethodException: <init> [class android.content.Context]
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at java.lang.Class.getConstructorOrMethod(Class.java:423)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at java.lang.Class.getConstructor(Class.java:397)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at android.support.v7.internal.view.f.a(Unknown Source)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at android.support.v7.internal.view.f.a(Unknown Source)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at android.support.v7.internal.view.f.b(Unknown Source)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at android.support.v7.internal.view.d.a(Unknown Source)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at android.support.v7.internal.view.d.inflate(Unknown Source)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at com.agehk.queue.MainActivity.onCreateOptionsMenu(Unknown Source)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at android.app.Activity.onCreatePanelMenu(Activity.java:2577)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at android.support.v4.app.j.onCreatePanelMenu(Unknown Source)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at android.support.v7.a.g.a(Unknown Source)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at android.support.v7.a.n.a(Unknown Source)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at android.support.v7.a.g.onCreatePanelMenu(Unknown Source)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at android.support.v7.a.o.onCreatePanelMenu(Unknown Source)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at com.android.internal.policy.impl.PhoneWindow.preparePanel(PhoneWindow.java:414)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at com.android.internal.policy.impl.PhoneWindow.doInvalidatePanelMenu(PhoneWindow.java:777)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at com.android.internal.policy.impl.PhoneWindow$1.run(PhoneWindow.java:199)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at android.view.Choreographer$CallbackRecord.run(Choreographer.java:835)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at android.view.Choreographer.doCallbacks(Choreographer.java:626)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at android.view.Choreographer.doFrame(Choreographer.java:589)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:821)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at android.os.Handler.handleCallback(Handler.java:730)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at android.os.Handler.dispatchMessage(Handler.java:92)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at android.os.Looper.loop(Looper.java:150)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at android.app.ActivityThread.main(ActivityThread.java:5390)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at java.lang.reflect.Method.invokeNative(Native Method)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at java.lang.reflect.Method.invoke(Method.java:525)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
09-04 15:57:13.105: W/SupportMenuInflater(17184):   at dalvik.system.NativeStart.main(Native Method)
09-04 15:57:13.105: D/AndroidRuntime(17184): Shutting down VM
09-04 15:57:13.105: W/dalvikvm(17184): threadid=1: thread exiting with uncaught exception (group=0x42f05500)
09-04 15:57:13.105: E/AndroidRuntime(17184): FATAL EXCEPTION: main
09-04 15:57:13.105: E/AndroidRuntime(17184): java.lang.NullPointerException
09-04 15:57:13.105: E/AndroidRuntime(17184):    at com.agehk.queue.MainActivity.onCreateOptionsMenu(Unknown Source)
09-04 15:57:13.105: E/AndroidRuntime(17184):    at android.app.Activity.onCreatePanelMenu(Activity.java:2577)
09-04 15:57:13.105: E/AndroidRuntime(17184):    at android.support.v4.app.j.onCreatePanelMenu(Unknown Source)
09-04 15:57:13.105: E/AndroidRuntime(17184):    at android.support.v7.a.g.a(Unknown Source)
09-04 15:57:13.105: E/AndroidRuntime(17184):    at android.support.v7.a.n.a(Unknown Source)
09-04 15:57:13.105: E/AndroidRuntime(17184):    at android.support.v7.a.g.onCreatePanelMenu(Unknown Source)
09-04 15:57:13.105: E/AndroidRuntime(17184):    at android.support.v7.a.o.onCreatePanelMenu(Unknown Source)
09-04 15:57:13.105: E/AndroidRuntime(17184):    at com.android.internal.policy.impl.PhoneWindow.preparePanel(PhoneWindow.java:414)
09-04 15:57:13.105: E/AndroidRuntime(17184):    at com.android.internal.policy.impl.PhoneWindow.doInvalidatePanelMenu(PhoneWindow.java:777)
09-04 15:57:13.105: E/AndroidRuntime(17184):    at com.android.internal.policy.impl.PhoneWindow$1.run(PhoneWindow.java:199)
09-04 15:57:13.105: E/AndroidRuntime(17184):    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:835)
09-04 15:57:13.105: E/AndroidRuntime(17184):    at android.view.Choreographer.doCallbacks(Choreographer.java:626)
09-04 15:57:13.105: E/AndroidRuntime(17184):    at android.view.Choreographer.doFrame(Choreographer.java:589)
09-04 15:57:13.105: E/AndroidRuntime(17184):    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:821)
09-04 15:57:13.105: E/AndroidRuntime(17184):    at android.os.Handler.handleCallback(Handler.java:730)
09-04 15:57:13.105: E/AndroidRuntime(17184):    at android.os.Handler.dispatchMessage(Handler.java:92)
09-04 15:57:13.105: E/AndroidRuntime(17184):    at android.os.Looper.loop(Looper.java:150)
09-04 15:57:13.105: E/AndroidRuntime(17184):    at android.app.ActivityThread.main(ActivityThread.java:5390)
09-04 15:57:13.105: E/AndroidRuntime(17184):    at java.lang.reflect.Method.invokeNative(Native Method)
09-04 15:57:13.105: E/AndroidRuntime(17184):    at java.lang.reflect.Method.invoke(Method.java:525)
09-04 15:57:13.105: E/AndroidRuntime(17184):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
09-04 15:57:13.105: E/AndroidRuntime(17184):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
09-04 15:57:13.105: E/AndroidRuntime(17184):    at dalvik.system.NativeStart.main(Native Method)
09-04 15:57:13.115: D/BatteryStatsImpl(445): noteStopWakeLocked com.google.android.gms isFromForeground = false
09-04 15:57:13.115: W/ActivityManager(445):   Force finishing activity com.agehk.queue/.MainActivity

解决方案

For API before 11 you should initialize Action Bar Items in compatibility mode:

@Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
        MenuItem searchMenuItem = menu.findItem(R.id.action_search);
        SearchView searchView = (SearchView)MenuItemCompat.getActionView(searchMenuItem);
        searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));
        return true;
    }

Update:
So, I tried to reproduce it in API 8 emulator and on 4.4 KitKat. Unfortunately, my 2.3.8 device got bricked a while ago, so could not check in hardware with low API. What I can suggest you:
1. Check that SearchView is imported from android.support.v7.widget.SearchView;
2. Check menu resource is correct:

<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto" <----------- init compatible namespace
    xmlns:tools="http://schemas.android.com/tools"
    tools:context=".MainActivity" >

    <item
        android:id="@+id/action_showTC"
        android:orderInCategory="100"
        android:title="@string/terms_and_conditions"
        app:showAsAction="never"/>  <----------- use compatible namespace

    <item android:id="@+id/action_search"
          android:title="@string/search"
          android:orderInCategory="100"  <---------- use different value
          app:showAsAction="ifRoom|collapseActionView"
          app:actionViewClass="android.support.v7.widget.SearchView"/>

</menu>

3. return true from onCreateOptionsMenu if there's no underlying processing (Activity class is not subclassed)

UPDATE2: GOT IT! You probably extends from Activity class. Should be ActioBarActivity:

public class MainActivity extends ActionBarActivity {
...

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