Context Menu

Context Menu
Android context menu appears when user long clicks on the item/element.
It is also known as floating menu.

activity_main.xml

<?xml version="1.0" encoding="utf-8"?> 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"     

 xmlns:app="http://schemas.android.com/apk/res-auto"

 xmlns:tools="http://schemas.android.com/tools"

 android:layout_width="match_parent" 

 android:layout_height="match_parent"     

 android:orientation="vertical"     

 tools:context="com.example.dell.contextmenu.MainActivity">

<ListView  

 android:layout_width="match_parent"         

 android:layout_height="wrap_content"         

 android:id="@+id/idlistView" 

 android:layout_margin="2dp"/>
    <TextView         

        android:layout_marginTop="4dp"         

        android:layout_width="match_parent"        

        android:layout_height="wrap_content"        

        android:text="long press"        

        android:textSize="25sp"

        android:id="@+id/idtxt1"

        android:gravity="center_horizontal"/>

</LinearLayout> 

MainActivity.java

import android.Manifest;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.Switch;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
ListView listView;
@Override 

protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 listView = (ListView) findViewById(R.id.idlistView);
 String[] planets = {"Mercury","Venus","Mars","Earth","Jupitor"};
 ArrayAdapter adapter = new ArrayAdapter(this,android.R.layout.simple_list_item_1,planets);
 listView.setAdapter(adapter);
 registerForContextMenu(listView);
   }
@Override 

public void onCreateContextMenu(ContextMenu menu,View v,ContextMenu.ContextMenuInfo menuInfo){ 

super.onCreateContextMenu(menu, v, menuInfo);
    menu.setHeaderTitle("Select the Action");
    menu.add(0,v.getId(),0,"Delete");
    menu.add(0,v.getId(),0,"UpperCase");
    menu.add(0,v.getId(),0,"LowerCase");
  } 

 @Override 

  public boolean onContextItemSelected(MenuItem item) {
  if(item.getTitle()=="Delete") {
  Toast.makeText(this, "Delete was pressed", Toast.LENGTH_SHORT).show();
                }
  else if(item.getTitle()=="UpperCase") {
  Toast.makeText(this, "UpperCase was pressed", Toast.LENGTH_SHORT).show();
                }
  else if(item.getTitle()=="LowerCase") {
  Toast.makeText(this, "LowerCase was pressed", Toast.LENGTH_SHORT).show();
                }
  return true;
 }
}