导航抽屉应用程序栏上的我的Android应用程序主要内容封面

Question

“我的Android应用”的主要内容由导航抽屉应用栏覆盖 我不知道为什么，但是我的xml布局在某处错误 导航应用栏进入我的Web视图并拉动以刷新布局 谢谢您的提前帮助.....................................

main.xml

`<?xml version="1.0" encoding="utf-8"?>
  <android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/drawer"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">


<android.support.design.widget.CoordinatorLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context="com.nk.kiranjewellers.MainActivity">

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay">


        <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/AppTheme.PopupOverlay" />

   </android.support.design.widget.AppBarLayout>

    <include layout="@layout/content_main_pull_to_refresh" />

</android.support.design.widget.CoordinatorLayout>

<ImageView
    android:id="@+id/image_splash"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:scaleType="centerCrop"
    android:src="@drawable/splash"
    android:visibility="visible" />



<android.support.design.widget.NavigationView
    android:id="@+id/navigation_view"
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:layout_gravity="start"
    app:headerLayout="@layout/nav_header_navigation"
    app:menu="@menu/menu_nevigation" />



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

和content_main.xml

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

    <FrameLayout
        android:id="@+id/webview_frame"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_above="@+id/adView"
        android:visibility="invisible"
        tools:context=".MainActivity">
        <android.support.v4.widget.SwipeRefreshLayout
            android:id="@+id/swipeToRefresh"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:isScrollContainer="true">
            <WebView
                android:id="@+id/webview"
                android:layout_width="fill_parent"
                android:layout_height="fill_parent" />
        </android.support.v4.widget.SwipeRefreshLayout>
    </FrameLayout>


    <com.google.android.gms.ads.AdView
        android:id="@+id/adView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_above="@+id/toolbar_footer"
        android:layout_centerHorizontal="true"
        android:visibility="invisible"
        app:adSize="BANNER"
        app:adUnitId="@string/banner_ad_unit_id" />

    <LinearLayout
        android:id="@+id/toolbar_footer"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:orientation="horizontal">

        <ImageView
            android:id="@+id/back"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="?attr/selectableItemBackground"
            android:clickable="true"
            android:padding="10dp"
            android:src="@drawable/ic_chevron_left_white_24px"
            android:tint="@color/White" />

        <ImageView
            android:id="@+id/forward"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="?attr/selectableItemBackground"
            android:clickable="true"
            android:padding="10dp"
            android:src="@drawable/ic_chevron_right_white_24px"
            android:tint="@color/White" />

        <ImageView
            android:id="@+id/billing"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:layout_weight="4"
            android:background="?attr/selectableItemBackground"
            android:clickable="true"
            android:padding="10dp"
            android:src="@drawable/ic_not_interested_white_24px"
            android:tint="@color/colorPrimary"
            android:visibility="invisible" />

        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:gravity="end">

            <ImageView
                android:id="@+id/refresh"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="end"
                android:background="?attr/selectableItemBackground"
                android:clickable="true"
                android:padding="10dp"
                android:src="@drawable/ic_refresh_white_24px"
                android:tint="@color/colorPrimary" />
        </LinearLayout>
    </LinearLayout>


</RelativeLayout> `

请帮助我解决此问题