Context Menu

A context menu is conceptually similar to the menu displayed when the user performs a "right-click" on a PC. You should use a context menu to provide the user access to actions that pertain to a specific item in the user interface. On Android, a context menu is displayed when the user performs a "long press" (press and hold) on an item.

You can create a context menu for any View, though context menus are most often used for items in a ListView. When the user performs a long-press on an item in a ListView and the list is registered to provide a context menu.

Example:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TextView  
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="@string/hello"
    />
<TextView  
    android:id="@+id/startcontextmenu"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="Long-Press on me!"
    />
</LinearLayout>

package com.MyContextMenu;

import android.app.Activity;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.MenuItem;
import android.view.View;
import android.view.ContextMenu.ContextMenuInfo;
import android.widget.TextView;
import android.widget.Toast;

public class MyContextMenu extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        TextView textStartContextMenu = (TextView)findViewById(R.id.startcontextmenu);
        registerForContextMenu(textStartContextMenu);
    }

 @Override
 public boolean onContextItemSelected(MenuItem item) {
  // TODO Auto-generated method stub
  
  Toast.makeText(MyContextMenu.this, 
    String.valueOf(item.getItemId()), 
    Toast.LENGTH_LONG).show();
  
  return super.onContextItemSelected(item);
 }

 @Override
 public void onCreateContextMenu(ContextMenu menu, View v,
   ContextMenuInfo menuInfo) {
  // TODO Auto-generated method stub
  super.onCreateContextMenu(menu, v, menuInfo);
  menu.add(0, 0, 0, "- A -");
  menu.add(0, 1, 0, "- B -");
  menu.add(0, 2, 0, "- C -");
  menu.add(0, 4, 0, "- D -");
 }
}

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