<merge>タグエラーですが、マージタグを使用していません（NavigationViewレイアウト）

Question

NavigationViewでアクティビティを作成しようとしていますが、起動時にADBでエラーが発生してクラッシュします。ここで

は、私が得たエラーである：ここでは

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.mypackage/com.mypackage.activity.MainActivity}: android.view.InflateException: Binary XML file line #31: Error inflating class android.support.design.widget.NavigationView 
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2460) 
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2522) 
    at android.app.ActivityThread.access$800(ActivityThread.java:167) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1417) 
    at android.os.Handler.dispatchMessage(Handler.java:111) 
    at android.os.Looper.loop(Looper.java:194) 
    at android.app.ActivityThread.main(ActivityThread.java:5534) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at java.lang.reflect.Method.invoke(Method.java:372) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:955) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:750) 
Caused by: android.view.InflateException: Binary XML file line #31: Error inflating class android.support.design.widget.NavigationView 
    at android.view.LayoutInflater.createView(LayoutInflater.java:633) 
    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:743) 
    at android.view.LayoutInflater.rInflate(LayoutInflater.java:806) 
    at android.view.LayoutInflater.inflate(LayoutInflater.java:504) 
    at android.view.LayoutInflater.inflate(LayoutInflater.java:414) 
    at android.view.LayoutInflater.inflate(LayoutInflater.java:365) 
    at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:257) 
    at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:109) 
    at com.team980.thunderscout.activity.MainActivity.onCreate(MainActivity.java:23) 
    at android.app.Activity.performCreate(Activity.java:5971) 
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1111) 
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2413) 
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2522) 
    at android.app.ActivityThread.access$800(ActivityThread.java:167) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1417) 
    at android.os.Handler.dispatchMessage(Handler.java:111) 
    at android.os.Looper.loop(Looper.java:194) 
    at android.app.ActivityThread.main(ActivityThread.java:5534) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at java.lang.reflect.Method.invoke(Method.java:372) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:955) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:750) 
Caused by: java.lang.reflect.InvocationTargetException 
    at java.lang.reflect.Constructor.newInstance(Native Method) 
    at java.lang.reflect.Constructor.newInstance(Constructor.java:288) 
    at android.view.LayoutInflater.createView(LayoutInflater.java:607) 
    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:743) 
    at android.view.LayoutInflater.rInflate(LayoutInflater.java:806) 
    at android.view.LayoutInflater.inflate(LayoutInflater.java:504) 
    at android.view.LayoutInflater.inflate(LayoutInflater.java:414) 
    at android.view.LayoutInflater.inflate(LayoutInflater.java:365) 
    at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:257) 
    at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:109) 
    at com.mypackage.activity.MainActivity.onCreate(MainActivity.java:23) 
    at android.app.Activity.performCreate(Activity.java:5971) 
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1111) 
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2413) 
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2522) 
    at android.app.ActivityThread.access$800(ActivityThread.java:167) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1417) 
    at android.os.Handler.dispatchMessage(Handler.java:111) 
    at android.os.Looper.loop(Looper.java:194) 
    at android.app.ActivityThread.main(ActivityThread.java:5534) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at java.lang.reflect.Method.invoke(Method.java:372) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:955) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:750) 
Caused by: android.view.InflateException: <merge /> can be used only with a valid ViewGroup root and attachToRoot=true 
    at android.view.LayoutInflater.inflate(LayoutInflater.java:475) 
    at android.view.LayoutInflater.inflate(LayoutInflater.java:414) 
    at android.support.design.internal.NavigationMenuPresenter.getMenuView(NavigationMenuPresenter.java:97) 
    at android.support.design.widget.NavigationView.<init>(NavigationView.java:165) 
    at android.support.design.widget.NavigationView.<init>(NavigationView.java:94) 
    at java.lang.reflect.Constructor.newInstance(Native Method) 
    at java.lang.reflect.Constructor.newInstance(Constructor.java:288) 
    at android.view.LayoutInflater.createView(LayoutInflater.java:607) 
    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:743) 
    at android.view.LayoutInflater.rInflate(LayoutInflater.java:806) 
    at android.view.LayoutInflater.inflate(LayoutInflater.java:504) 
    at android.view.LayoutInflater.inflate(LayoutInflater.java:414) 
    at android.view.LayoutInflater.inflate(LayoutInflater.java:365) 
    at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:257) 
    at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:109) 
    at com.mypackage.activity.MainActivity.onCreate(MainActivity.java:23) 
    at android.app.Activity.performCreate(Activity.java:5971) 
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1111) 
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2413) 
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2522) 
    at android.app.ActivityThread.access$800(ActivityThread.java:167) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1417) 
    at android.os.Handler.dispatchMessage(Handler.java:111) 
    at android.os.Looper.loop(Looper.java:194) 
    at android.app.ActivityThread.main(ActivityThread.java:5534) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at java.lang.reflect.Method.invoke(Method.java:372) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:955) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:750) 

は、私の活動のレイアウトである：ここで

<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
xmlns:app="http://schemas.android.com/apk/res-auto" 
android:id="@+id/drawer_layout" 
android:fitsSystemWindows="true"> 

<!-- This LinearLayout represents the contents of the screen --> 
<LinearLayout 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:orientation="vertical"> 

    <!-- The ActionBar displayed at the top --> 
    <include 
     layout="@layout/toolbar_main" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" /> 

    <!-- The main content view where fragments are loaded --> 
    <FrameLayout 
     android:id="@+id/contentPanel" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" /> 

</LinearLayout> 

<!-- The navigation drawer that comes from the left --> 
<!-- Note that `android:layout_gravity` needs to be set to 'start' --> 
<android.support.design.widget.NavigationView 
    android:id="@+id/nav_view" 
    android:layout_width="wrap_content" 
    android:layout_height="match_parent" 
    android:layout_gravity="start" 
    android:background="@android:color/white" 
    app:menu="@menu/drawer_view" /> 

</android.support.v4.widget.DrawerLayout> 

は、ツールバーのレイアウトです：

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:app="http://schemas.android.com/apk/res-auto" 
xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:orientation="vertical"> 

    <android.support.v7.widget.Toolbar 
     android:id="@+id/toolbar" 
     android:layout_width="match_parent" 
     android:layout_height="?attr/actionBarSize" 
     android:background="?attr/colorPrimary" 
     app:popupTheme="@style/ThemeOverlay.AppCompat.Light" 
     app:layout_scrollFlags="scroll|enterAlways"/> 

    <android.support.design.widget.TabLayout 
     android:id="@+id/tab_layout" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:background="?attr/colorPrimary" 
     app:tabGravity="fill" 
     app:tabMode="fixed" /> 

</LinearLayout> 

私はわからないんだけどこのエラーが発生している可能性があります。私は何時間もこのコードを変更しています（エラーは変わっています）。

EDIT：メニュー/ drawer_view：

<?xml version="1.0" encoding="utf-8"?> 
<menu xmlns:android="http://schemas.android.com/apk/res/android"> 

<group android:checkableBehavior="single"> 
    <item 
     android:id="@+id/nav_scout" 
     android:title="Scout" /> 
    <item 
     android:id="@+id/nav_view" 
     android:title="View" /> 
</group> 

<item android:title="More options"> 
    <menu> 
     <item 
      android:id="@+id/nav_settings" 
      android:icon="@drawable/ic_menu_manage" 
      android:title="Settings" /> 
     <item 
      android:id="@+id/nav_feedback" 
      android:icon="@drawable/ic_menu_send" 
      android:title="Help &amp; feedback" /> 
    </menu> 
</item> 
</menu> 

Answer 1

私は私が変更かわからないが、私はプロジェクトをきれいにし、それが今で固定だ:)