Thursday 16 August 2012

Context Menu Example in Android

Context Menu is a floating list of menu items that appears when a user touches
and holds a particular item displayed in the view,which has a menu associated with it.

Here below example shows ContextMenu when user Long_press on one Button.

UI Layout(android_context_menu_example.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"
    tools:context=".AndroidContextMenuExample" >

    <Button
        android:id="@+id/click"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_centerVertical="true"
        android:text="Long-press on me i will show Context Menu.." />

</RelativeLayout>

Android Activity (AndroidContextMenuExample.java)

package com.androidsurya.androidcontextmenu;

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

public class AndroidContextMenuExample extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.android_context_menu_example);

        Button click = (Button) findViewById(R.id.click);
        registerForContextMenu(click);
    }

    @Override
    public void onCreateContextMenu(ContextMenu menu, View v,
            ContextMenuInfo menuInfo) {
        super.onCreateContextMenu(menu, v, menuInfo);
        menu.setHeaderTitle("Context Menu Title");
        menu.add(0, v.getId(), 0, "Item 1");
        menu.add(0, v.getId(), 0, "Item 2");
        menu.add(0, v.getId(), 0, "Item 3");
    }

    @Override
    public boolean onContextItemSelected(MenuItem item) {
        // when ever user Click on any item Toast message will fired..for Demo
        // purpose i added Toast message now you can add your functionality
        if (item.getTitle() == "Item 1") {
            Toast.makeText(getApplicationContext(), "Item 1 clicked....",
                    Toast.LENGTH_LONG).show();
        } else if (item.getTitle() == "Item 2") {
            Toast.makeText(getApplicationContext(), "Item 2 clicked....",
                    Toast.LENGTH_LONG).show();
        } else if (item.getTitle() == "Item 3") {
            Toast.makeText(getApplicationContext(), "Item 3 clicked....",
                    Toast.LENGTH_LONG).show();
        } else {
            return false;
        }
        return true;
    }

}

Register Activity in AndroidManifest file

 <activity
            android:name="com.androidsurya.androidcontextmenu.AndroidContextMenuExample"
            android:label="@string/app_name" >

Output Screenshot











For More information about Context Menu : Android Developers site

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