java - Bottom sheet not working as intended -


i'm using custom gridview + navigation drawer working of app, when tried add bottom sheet in coordinatorlayout, seems using 40% of page without being expanded or collapsed when triggered using longpress event on griditem. note doesn't expand or collapse sliding behaviour well.

the main xml (followed child xmls) activity_gyapak.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_layout"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:fitssystemwindows="true"     tools:opendrawer="start">      <include         layout="@layout/app_bar_gyapak"         android:layout_width="match_parent"         android:layout_height="match_parent" />      <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:fitssystemwindows="true"         app:headerlayout="@layout/nav_header_gyapak"         app:menu="@menu/activity_gyapak_drawer" />  </android.support.v4.widget.drawerlayout>

the app_bar_gyapak.xml bottom sheet added:

<?xml version="1.0" encoding="utf-8"?> <android.support.design.widget.coordinatorlayout 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"     android:fitssystemwindows="true"     tools:context="edu.ahduni.seas.gyapak.gyapakactivity">      <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_gyapak" />      <android.support.design.widget.floatingactionbutton         android:id="@+id/fab"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_gravity="bottom|end"         android:layout_margin="@dimen/fab_margin"         app:srccompat="@drawable/ic_cloud_download_white_24dp" />      <android.support.v4.widget.nestedscrollview         xmlns:android="http://schemas.android.com/apk/res/android"         xmlns:tools="http://schemas.android.com/tools"         xmlns:app="http://schemas.android.com/apk/res-auto"         android:id="@+id/bottom_sheet1"         android:layout_width="match_parent"         android:layout_height="250dp"         android:cliptopadding="true"         android:background="@android:color/holo_blue_bright"         app:layout_behavior="android.support.design.widget.bottomsheetbehavior">          <linearlayout             android:layout_width="match_parent"             android:layout_height="wrap_content"             android:orientation="vertical">              <textview                 android:layout_width="match_parent"                 android:layout_height="match_parent"                 android:text="@string/sheet_p1"                 android:textsize="16sp"                 android:textallcaps="true"                 android:padding="16dp"/>              <textview                 android:layout_width="match_parent"                 android:layout_height="match_parent"                 android:text="@string/long_latin"                 android:padding="16dp"                 android:textsize="16sp"/>         </linearlayout>     </android.support.v4.widget.nestedscrollview>  </android.support.design.widget.coordinatorlayout>

the content_gyapak.xml custom gridview each grid contains vertical linearlayout of imageview + textview:

<?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:id="@+id/content_gyapak"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:paddingbottom="5dp"     android:paddingleft="5dp"     android:paddingright="5dp"     android:paddingtop="0dp"     app:layout_behavior="@string/appbar_scrolling_view_behavior"     tools:context="edu.ahduni.seas.gyapak.gyapakactivity"     tools:showin="@layout/app_bar_gyapak">      <gridview xmlns:android="http://schemas.android.com/apk/res/android"          android:id="@+id/grid"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_weight="1"         android:columnwidth="90dp"         android:numcolumns="auto_fit"         android:verticalspacing="10dp"         android:horizontalspacing="10dp"         android:stretchmode="columnwidth"         android:gravity="center"         android:paddingleft="10dp"         android:paddingright="10dp"         android:paddingtop="10dp"         android:paddingbottom="80dp"         android:cliptopadding="false"         android:scrollbars="vertical"/>  </relativelayout>


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