android - Built a custom file in XML, Can't call it in Java by any means -

i working on listviews. decided make customized listview. it, xml file (customized) required. built cannot call means in java. following line row_layout red error "cannot resolve symbol "row_layout":

listadapter myadapter = new arrayadapter<string> (this, android.r.layout.row_layout, cars); 

following code of customized xml file row_layout :

<?xml version="1.0" encoding="utf-8"?> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android"     android:orientation="vertical" android:layout_width="match_parent"     android:layout_height="match_parent"     android:id="@+id/row_layout">          <textview             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:id="@+id/mytextview1"             android:textsize="32dp"             android:textstyle="italic"/> </linearlayout> 

following java file code :

package com.ranatalha.mylistapp;  import android.support.v7.app.appcompatactivity; import android.os.bundle; import android.view.view; import android.widget.adapterview; import android.widget.arrayadapter; import android.widget.listadapter; import android.widget.listview; import android.widget.toast;  public class mainactivity extends appcompatactivity {      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);         string [] cars=                 {                 "mehran",                 "corolla",                 "faw v2",                 "honda city"                 };          //to link above created array in list         //listadapter myadapter = new arrayadapter<string>(this, android.r.layout.simple_list_item_1, cars);          listadapter myadapter = new arrayadapter<string> (this, android.r.layout.row_layout, cars);          //referring listview createdin xml         listview mylistview = (listview) findviewbyid(r.id.mylistview);          //connecting listview adapter         mylistview.setadapter(myadapter);          //catching clicks on listview         mylistview.setonitemclicklistener(new adapterview.onitemclicklistener() {                     @override                     //implements method                     public void onitemclick(adapterview<?> adapterview, view view, int position, long l) {                         string carspicked = "your picked car: " + string.valueof(adapterview.getitematposition(position));                         toast.maketext(mainactivity.this, carspicked, toast.length_short).show();           }          }          );          }          } 

android.r uses built in android resources. try android.r.layout.simple_list_item1.

or create own layout , call id r.layout.