Nested context menu

In this tutorial, we show you how to make nested context menu...  A context menu is a menu in a graphical user interface that appears upon user interaction..

Open “res/layout/activity_main.xml” file, add a button.

File : res/layout/activity_main.xml

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

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

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context=".MainActivity" >

    <Button

        android:id="@+id/button1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentLeft="true"

        android:layout_alignParentTop="true"

        android:layout_marginLeft="25dp"

        android:layout_marginTop="26dp"

        android:text="Context Menu" />

</RelativeLayout>

Open “res/menu/main.xml” file, add following items.

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

    <item  

        android:id="@+id/one"  

        android:title="One">

        <menu>

            <item android:id="@+id/item1" android:title="Apple"/>

            <item android:id="@+id/item2" android:title="iphone"/>

        </menu>

    </item>  

      

    <item  

        android:id="@+id/two"  

        android:title="Two"/>  

        

    <item  

        android:id="@+id/three"  

        android:title="Three"/> 

</menu>

Code::

open MainActivity.java file and paste following code..

Make onContextItemSelected method and get all items id..& don't forget to add registerForContextMenu for button through which we get context menu..

package com.example.contextmenuforbutton;

import android.os.Bundle;

import android.app.Activity;

import android.view.ContextMenu;

import android.view.Menu;

import android.view.MenuItem;

import android.view.SubMenu;

import android.view.View;

import android.view.ContextMenu.ContextMenuInfo;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.Toast;

public class MainActivity extends Activity {

Button b;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

b = (Button) findViewById(R.id.button1);

registerForContextMenu(b);

}

@Override

public void onCreateContextMenu(ContextMenu menu, View v,

ContextMenuInfo menuInfo) {

// TODO Auto-generated method stub

super.onCreateContextMenu(menu, v, menuInfo);

getMenuInflater().inflate(R.menu.main, menu);

}

@Override

public boolean onContextItemSelected(MenuItem item) {

// TODO Auto-generated method stub

switch (item.getItemId()) 

{

case R.id.one:

Toast.makeText(getApplicationContext(), "One selected", 20).show();

return true;

case R.id.two:

Toast.makeText(getApplicationContext(), "Two selected", 20).show();

return true;

case R.id.three:

Toast.makeText(getApplicationContext(), "Three selected", 20).show();

return true;

case R.id.item1:

Toast.makeText(getApplicationContext(), "Apple selected", 20).show();

return true;

case R.id.item2:

Toast.makeText(getApplicationContext(), "Iphone selected", 20).show();

return true;

}

return true;

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menu; this adds items to the action bar if it is present.

getMenuInflater().inflate(R.menu.main, menu);

//SubMenu s = menu.addSubMenu(R.id.one);

//s.add(0,R.id.item1, 0, "Apple");

//s.add(0,R.id.item2, 0, "Iphone");

return true;

}

}

Screen shot::

Download source code

Note:: This is my first blog..  if any problem occurs, please specify in comment..