Android Вы должны указать атрибут layout_width

Question

ниже макета XML мой простой макет приложения, но после применения компиляции я получаю эту ошибку:

Unable to start activity ComponentInfo{ir.pishguy.signalpresentationproject/ir.pishguy. 
signalpresentationproject.Activities.ActivityMain}: 
android.view.InflateException: 
Binary XML file line #147: Binary XML file line #147: 
You must supply a layout_width attribute. 

моих всех виджетов layout_width, но я не знаю, почему я получаю это ошибка

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

    <android.support.design.widget.CoordinatorLayout 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:background="#ffffff" 
     android:orientation="vertical"> 

     <!--<android.support.v4.widget.SwipeRefreshLayout--> 
     <LinearLayout 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" 
      android:orientation="vertical"> 

      <android.support.design.widget.AppBarLayout 
       android:layout_width="match_parent" 
       android:layout_height="wrap_content"> 

       <android.support.v7.widget.Toolbar 
        android:id="@+id/toolbar" 
        android:layout_width="match_parent" 
        android:layout_height="65dp" 
        android:background="@color/signal_toolbar_color" 
        android:titleTextColor="#ffffff"> 

        <LinearLayout 
         android:layout_width="match_parent" 
         android:layout_height="match_parent" 
         android:orientation="horizontal"> 

         <com.joanzapata.iconify.widget.IconTextView 
          android:id="@+id/signal_robot" 
          android:layout_width="wrap_content" 
          android:layout_height="match_parent" 
          android:layout_marginLeft="10dp" 
          android:clickable="true" 
          android:gravity="center|right" 
          android:shadowColor="#22000000" 
          android:shadowDx="3" 
          android:shadowDy="3" 
          android:shadowRadius="1" 
          android:text="{fa-android}" 
          android:textColor="@color/quote" 
          android:textSize="25sp"/> 

         <com.joanzapata.iconify.widget.IconTextView 
          android:id="@+id/search_icon" 
          android:layout_width="wrap_content" 
          android:layout_height="match_parent" 
          android:layout_marginLeft="10dp" 
          android:layout_marginRight="10dp" 
          android:gravity="center|right" 
          android:shadowColor="#22000000" 
          android:shadowDx="3" 
          android:shadowDy="3" 
          android:shadowRadius="1" 
          android:text="{fa-search}" 
          android:textColor="#ffffff" 
          android:textSize="25sp"/> 

         <com.gigamole.library.ntb.NavigationTabBar 

          android:id="@+id/navigationTabBar" 
          android:layout_width="150dp" 
          android:layout_height="30dp" 
          android:layout_gravity="center_vertical|left" 
          android:background="@drawable/bg_round_circle" 
          app:ntb_active_color="#4527A0" 
          app:ntb_animation_duration="150" 
          app:ntb_corners_radius="50dp" 
          app:ntb_inactive_color="#dddfec" 
          app:ntb_preview_colors="@array/red_wine"/> 

         <TextView 
          android:id="@+id/activity_market_robot_title" 
          android:layout_width="0dp" 
          android:layout_height="match_parent" 
          android:layout_marginRight="10dp" 
          android:layout_weight="1" 
          android:gravity="center|right" 
          android:text="@string/app_name" 
          android:textColor="#ffffff" 
          android:textSize="18sp"/> 

        </LinearLayout> 

       </android.support.v7.widget.Toolbar> 
      </android.support.design.widget.AppBarLayout> 
      <!-- android.support.v4.widget.NestedScrollView --> 

      <android.support.v4.view.ViewPager 
       android:id="@+id/vp_horizontal_ntb" 
       android:layout_width="match_parent" 
       android:layout_height="0dp" 
       android:layout_weight="1" 
       app:layout_behavior="@string/appbar_scrolling_view_behavior"/> 
     </LinearLayout> 

     <android.support.design.widget.FloatingActionButton 
      android:id="@+id/activity_main_fab" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_gravity="end|bottom" 
      android:layout_margin="20dp" 
      android:clickable="true" 
      android:src="@drawable/ic_add_circle_outline" 
      android:tint="@color/white" 
      android:visibility="gone" 
      app:backgroundTint="@color/signal_secondary_color" 
      app:layout_behavior="ir.pishguy.signalpresentationproject.Configurations.ScrollAwareFABBehavior"/> 

     <ir.pishguy.signalpresentationproject.Widgets.CircularRevealView 
      android:id="@+id/market_item_reveal" 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" 
      android:background="@android:color/transparent"/> 
    </android.support.design.widget.CoordinatorLayout> 

    <com.lapism.searchview.SearchView 
     android:id="@+id/searchView" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent"/> 
</FrameLayout> 

Answer 1

Вы добавили эту строку, которая делает XML недействительным.

xmlns:android="http://schemas.android.com/apk/res/android"/>