java - RecyclerView with ToolBar -

i'm new material design , every time try use recyclerview every thing gose wrong..

can 1 know problem ?

main activity class

 import android.support.v7.app.actionbaractivity;  import android.os.bundle;  import android.support.v7.widget.toolbar;  import android.view.menu;  import android.view.menuitem;   public class mainactivity extends actionbaractivity {      toolbar toolbar;     @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);         toolbar= (toolbar) findviewbyid(r.id.toool);         setsupportactionbar(toolbar);     }      @override     public boolean oncreateoptionsmenu(menu menu) {         // inflate menu; adds items action bar if present.         getmenuinflater().inflate(r.menu.menu_main, menu);         return true;     }      @override     public boolean onoptionsitemselected(menuitem item) {         // handle action bar item clicks here. action bar         // automatically handle clicks on home/up button, long         // specify parent activity in androidmanifest.xml.         int id = item.getitemid();          //noinspection simplifiableifstatement         if (id == r.id.action_settings) {             return true;         }          return super.onoptionsitemselected(item);     }  }   

main activity layout

<relativelayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:paddingbottom="@dimen/activity_vertical_margin"     android:paddingleft="@dimen/activity_horizontal_margin"     android:paddingright="@dimen/activity_horizontal_margin"     android:paddingtop="@dimen/activity_vertical_margin"     tools:context=".mainactivity" >      <include         android:id="@+id/toool"         layout="@layout/app_tool" />      <fragment         android:id="@+id/fragment"         android:name="com.example.hothyfa.recyclerandmore.recycler"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_below="@+id/toool"         android:layout_centerhorizontal="true"         tools:layout="@layout/rere" />  </relativelayout> 

recycler fragment

<?xml version="1.0" encoding="utf-8"?> <relativelayout xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="match_parent"     android:layout_height="match_parent" >      <android.support.v7.widget.recyclerview         android:id="@+id/recye"         android:layout_width="match_parent"         android:layout_height="wrap_content" >     </android.support.v7.widget.recyclerview>  </relativelayout> 

recycler class

import android.os.bundle; import android.support.annotation.nullable; import android.support.v4.app.fragment; import android.support.v7.widget.linearlayoutmanager; import android.support.v7.widget.recyclerview; import android.view.layoutinflater; import android.view.view; import android.view.viewgroup;  import java.util.arraylist; import java.util.list;  public class recycler extends fragment {      private recyclerview recyclerview;      private myrecyeadapter adapter;     private view view;      @nullable     @override     public view oncreateview(layoutinflater inflater, @nullable viewgroup container, @nullable bundle savedinstancestate) {          view = inflater.inflate(r.layout.rere, container, false);          recyclerview = (recyclerview) getactivity().findviewbyid(r.id.recye);          adapter = new myrecyeadapter(getactivity(), getdata());         recyclerview.setadapter(adapter);         recyclerview.setlayoutmanager(new linearlayoutmanager(getactivity()));          return view;     }      public static list<info> getdata() {          list<info> data = new arraylist<>();         int photos[] = { r.drawable.images, r.drawable.dreamsmal, r.drawable.images, r.drawable.dreamsmal };         string users[] = { "hothyfa", "marwan", "jamal", "alaa" };          (int = 0; < photos.length && < users.length; i++) {              info current = new info();             current.iconid = photos[i];             current.names = users[i];             data.add(current);          }         return data;      }  } 

recyclerview adapter class

import android.content.context;  import android.support.v7.widget.recyclerview;  import android.view.layoutinflater;  import android.view.view;  import android.view.viewgroup;  import android.widget.imageview;  import android.widget.textview;  import java.util.collections;  import java.util.list;  public class myrecyeadapter extends recyclerview.adapter<myrecyeadapter.myholder> {      list<info> data = collections.emptylist();     private layoutinflater inflater;      public myrecyeadapter(context context, list<info> data) {          inflater = layoutinflater.from(context);         this.data = data;      }      @override     public myholder oncreateviewholder(viewgroup parent, int viewtype) {         view view = inflater.inflate(r.layout.custom, parent, false);         myholder holder = new myholder(view);          return holder;     }      @override     public void onbindviewholder(myholder holder, int position) {          info current = data.get(position);          holder.imageprofile.setimageresource(current.iconid);          holder.usersname.settext(current.names);     }      @override     public int getitemcount() {         return data.size();     }      public class myholder extends recyclerview.viewholder {          imageview imageprofile;         textview usersname;          public myholder(view itemview) {              super(itemview);             imageprofile = (imageview) itemview.findviewbyid(r.id.imageview);             usersname = (textview) itemview.findviewbyid(r.id.textview);          }     }  } 

custom row layout (for recyclerview)

 <?xml version="1.0" encoding="utf-8"?>     <linearlayout xmlns:android="http://schemas.android.com/apk/res/android"         android:layout_width="match_parent"         android:layout_height="match_parent"         android:orientation="horizontal" >          <imageview             android:id="@+id/imageview"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:layout_gravity="center_vertical"             android:padding="8dp"             android:src="@drawable/images" />          <textview             android:id="@+id/textview"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:layout_gravity="center_vertical"             android:padding="8dp"             android:text="large text" />      </linearlayout> 

and data class recycler

public class info {      int iconid;      string names;  } 

toolbar layout

<?xml version="1.0" encoding="utf-8"?> <android.support.v7.widget.toolbar xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="@color/primarycolor" >       </android.support.v7.widget.toolbar> 

note: have put in build.gradle

compile 'com.android.support:recyclerview-v7:22.2.1' 

and rebuild app.

error:

java.lang.runtimeexception: unable start activity componentinfo{com.example.hothyfa.recyclerandmore/com.example.hothyfa.recyclerandmore.mainactivity}: android.view.inflateexception: binary xml file line #19: error inflating class fragment                                @              app.activitythread.performlaunchactivity(activitythread.java:2325)                                  @                \\\\\\\android.app.activitythread.handlelaunchactivity(activitythread.java:2390)             @ android.app.activitythread.access$800(activitythread.java:151)             @ android.app.activitythread$h.handlemessage(activitythread.java:1303)             @ android.os.handler.dispatchmessage(handler.java:102)             @ android.os.looper.loop(looper.java:135)             @ android.app.activitythread.main(activitythread.java:5257)             @ java.lang.reflect.method.invoke(native method)             @ java.lang.reflect.method.invoke(method.java:372)             @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:903)             @ com.android.internal.os.zygoteinit.main(zygoteinit.java:698)      caused by: android.view.inflateexception: binary xml file line #19: error inflating class fragment             @ android.view.layoutinflater.createviewfromtag(layoutinflater.java:763)             @ android.view.layoutinflater.rinflate(layoutinflater.java:806)             @ android.view.layoutinflater.inflate(layoutinflater.java:504)             @ android.view.layoutinflater.inflate(layoutinflater.java:414)             @ android.view.layoutinflater.inflate(layoutinflater.java:365)             @ android.support.v7.app.appcompatdelegateimplv7.setcontentview(appcompatdelegateimplv7.java:249)             @ android.support.v7.app.appcompatactivity.setcontentview(appcompatactivity.java:106)             @ com.example.hothyfa.recyclerandmore.mainactivity.oncreate(mainactivity.java:19)             @ android.app.activity.performcreate(activity.java:5990)             @ android.app.instrumentation.callactivityoncreate(instrumentation.java:1106)             @ android.app.activitythread.performlaunchactivity(activitythread.java:2278)      

ok, found issue, in oncreateview of recycler

recyclerview= (recyclerview) getactivity().findviewbyid(r.id.recye); 

change to:

recyclerview= (recyclerview) view.findviewbyid(r.id.recye);