1.List View:
List View is used to display list of names. We place this in layout and set items of list through code in MainActivity.java.
2.Array Adapter:
Array Adapter is used to set array of names in List View. We grab names from menu and set this adapter on list view placed in layout file.
3.Menu Inflator:
We used menu inflator to inflate menu on long press of list item. This menu contains edit, copy, paste and delete menu.
4.Toast Notification:
Toast Notification is used to notify the selection of any item of menu.
1. MainActivity.java
package com.example.contextmenuexample;
import android.os.Bundle;
import android.app.Activity;
import android.app.ListActivity;
import android.content.Intent;
import android.view.ContextMenu;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ContextMenu.ContextMenuInfo;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
public class MainActivity extends Activity {
ListView l_view;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
l_view = (ListView)findViewById(R.id.listView1);
ArrayAdapter<String> ad = new
ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1,getResources().
getStringArray(R.array.names));
l_view.setAdapter(ad);
//setAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,getResources().getStringArray(R.array.names)));
registerForContextMenu(l_view);
}
@Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
// TODO Auto-generated method stub
super.onCreateContextMenu(menu, v, menuInfo);
MenuInflater inflator = getMenuInflater();
inflator.inflate(R.menu.main_menu, menu);
}
@Override
public boolean onContextItemSelected(MenuItem item) {
// TODO Auto-generated method stub
switch(item.getItemId())
{
case R.id.edit:
Toast.makeText(this, "You have choosen the edit option.", Toast.LENGTH_LONG).show();
return true;
case R.id.copy:
Toast.makeText(this, "You have choosen the copy option.", Toast.LENGTH_LONG).show();
return true;
case R.id.paste:
Toast.makeText(this, "You have choosen the paste option.", Toast.LENGTH_LONG).show();
return true;
case R.id.delete:
Toast.makeText(this, "You have choosen the delete option.", Toast.LENGTH_LONG).show();
return true;
}
return super.onContextItemSelected(item);
}
}
2.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" >
<ListView
android:id="@+id/listView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/textView1"
android:layout_below="@+id/textView1" >
</ListView>
</RelativeLayout>
3.values/string.xml:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">ContextMenuExample</string>
<string name="action_settings">Settings</string>
<string name="edit">Edit</string>
<string name="Copy">Copy</string>
<string name="paste">Paste</string>
<string name="Delete">Delete</string>
<string name="hello_world">Hello world!</string>
<string-array name="names">
<item>Manoj Kumar</item>
<item>Viplav</item>
<item>Samir</item>
<item>Abhishek</item>
<item>Amit</item>
<item>Prabhat</item>
</string-array>
</resources>
4.menu/main_menu.xml:
<menu xmlns:android="http://schemas.android.com/apk/res/android" >
<item
android:id="@+id/edit"
android:title="@string/edit"/>
<item
android:id="@+id/copy"
android:title="@string/Copy"/>
<item
android:id="@+id/paste"
android:title="@string/paste"/>
<item
android:id="@+id/delete"
android:title="@string/Delete"/>
</menu>
Manoj Mimanshak Trainee at Sisoft Technologies Indirapuram Ghaziabad