How to set prompt text in a 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="#66a5f9"     >     <Spinner         android:id="@+id/spinner"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:spinnerMode="dialog"         /> </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"     />
MainActivity.java 
 package com.cfsuman.me.androidcodesnippets;  import android.graphics.Color; import android.os.Bundle; import android.app.Activity; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.Spinner; import android.widget.TextView;  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);          // Initializing a String Array         String[] plants = new String[]{                 "Laceflower",                 "California sycamore",                 "Mountain mahogany",                 "Butterfly weed",                 "Carrot 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){             @Override             public View getDropDownView(int position, View convertView,                                         ViewGroup parent) {                 View view = super.getDropDownView(position, convertView, parent);                 TextView tv = (TextView) view;                 if(position%2 == 1) {                     // Set the item background color                     tv.setBackgroundColor(Color.parseColor("#FFF9A600"));                 }                 else {                     // Set the alternate item background color                     tv.setBackgroundColor(Color.parseColor("#FFE49200"));                 }                 return view;             }         };          /*             public void setPrompt (CharSequence prompt)                 Sets the prompt to display when the dialog is shown.          */         spinner.setPrompt("Select an item");          spinnerArrayAdapter.setDropDownViewResource(R.layout.spinner_item);         spinner.setAdapter(spinnerArrayAdapter);    } }
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