Context Menu in Android

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 -"); }}