How to find an item from Spinner in Android

activity_main.xml 
 <RelativeLayout     xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:id="@+id/rl"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:padding="10dp"     tools:context=".MainActivity"     android:background="#2cc6cd"     >     <Button         android:id="@+id/btn"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="Find 'Apple' From Spinner"         />     <Spinner         android:id="@+id/spinner"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_below="@id/btn"         /> </RelativeLayout>
spinner_item.xml 
 <?xml version="1.0" encoding="utf-8"?> <TextView     xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:padding="10dp"     android:textStyle="italic"     android:fontFamily="sans-serif-medium"     android:background="#fc640a"     />
MainActivity.java 
 package com.cfsuman.me.androidcodesnippets;  import android.os.Bundle; import android.app.Activity; import android.view.View; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.Spinner; import android.widget.Toast;  import java.util.ArrayList; import java.util.Arrays; import java.util.List;   public class MainActivity extends Activity {      @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);          // Get reference of widgets from XML layout         simpulan Spinner spinner = (Spinner) findViewById(R.id.spinner);         Button btn = (Button) findViewById(R.id.btn);          // Initializing a String Array         String[] plants = new String[]{                 "Laceflower",                 "Apple",                 "Mountain mahogany",                 "Butterfly weed"         };          simpulan List<String> plantsList = new ArrayList<>(Arrays.asList(plants));          // Initializing an ArrayAdapter         simpulan ArrayAdapter<String> spinnerArrayAdapter = new ArrayAdapter<String>(                 this,R.layout.spinner_item,plantsList);          spinnerArrayAdapter.setDropDownViewResource(R.layout.spinner_item);         spinner.setAdapter(spinnerArrayAdapter);          btn.setOnClickListener(new View.OnClickListener() {             @Override             public void onClick(View v) {                 String searchedItem = "Apple";                 int itemPosition = spinnerArrayAdapter.getPosition(searchedItem);                 if(itemPosition == -1)                 {                     String message = searchedItem + " : Item not found.";                     Toast.makeText(getApplicationContext(),message,Toast.LENGTH_SHORT).show();                 }                 else                 {                     String message = searchedItem + " : Item found and selected.";                     Toast.makeText(getApplicationContext(),message,Toast.LENGTH_SHORT).show();                     spinner.setSelection(itemPosition);                 }             }         });    } }


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