Android Buttom sheet is not working -

android bottom sheet not working. below code , want create bottom sheet demo not working , bottom sheet not showing.

    public class mainactivity extends appcompatactivity  implements view.onclicklistener{     private bottomsheetbehavior mbottomsheetbehavior;     private button button1;     private view bottomsheet;      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);          getid();         setlistner();         mbottomsheetbehavior = bottomsheetbehavior.from(bottomsheet);     }      private void getid() {         try {             button1 = (button)findviewbyid(r.id.button1);             bottomsheet = findviewbyid(r.id.bottom_sheet);         } catch (exception e) {             e.printstacktrace();         }     }     private void setlistner() {         try {             button1.setonclicklistener(this);         } catch (exception e) {             e.printstacktrace();         }     }     @override     public void onclick(view v)     {         try {             switch (v.getid())             {                 case r.id.button1:                 mbottomsheetbehavior.setstate(bottomsheetbehavior.state_expanded);                      log.e("buttom clicked",">>");                     break;             }         } catch (exception e) {             e.printstacktrace();         }     } } 

here xml file.

        <android.support.design.widget.coordinatorlayout     xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:app="http://schemas.android.com/apk/res-auto"     android:id="@+id/main_content"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:fitssystemwindows="true">      <scrollview         android:layout_width="match_parent"         android:layout_height="match_parent"         app:layout_behavior="@string/appbar_scrolling_view_behavior">         <linearlayout             android:layout_width="match_parent"             android:layout_height="match_parent"             android:orientation="vertical"             android:paddingtop="24dp">              <button                 android:id="@+id/button1"                 android:layout_width="match_parent"                 android:layout_height="wrap_content"                 android:text="button 1"                 android:padding="16dp"                 android:layout_margin="8dp"                 android:textcolor="@android:color/white"                 android:background="@android:color/holo_green_dark"/>         </linearlayout>     </scrollview>      <android.support.v4.widget.nestedscrollview         android:id="@+id/bottom_sheet"         android:layout_width="match_parent"         android:layout_height="350dp"         android:cliptopadding="true"         android:background="@android:color/holo_orange_light"         app:layout_behavior="android.support.design.widget.bottomsheetbehavior"         >         <imageview             android:layout_width="match_parent"             android:layout_height="match_parent"             android:background="@drawable/ic_launcher"             android:padding="16dp"             android:textsize="16sp"/>     </android.support.v4.widget.nestedscrollview>  </android.support.design.widget.coordinatorlayout> 

actually want implement bottom sheet using android support library 23.2 using abouve code without out using other library not working. , advance.

use dependency compile 'com.cocosw:bottomsheet:1.2.0'

and add code

new bottomsheet.builder(getactivity(), r.style.bottomsheet_styledialog).                     sheet(r.menu.bottom_sheet).title(displayname).listener(new dialoginterface.onclicklistener() {                 @override                 public void onclick(dialoginterface dialog, int which) {                     switch (which) {                         case r.id.btnone:                             // something...                             break;                         case r.id.btntwo:                            // ...                                   }                              }              }).show();