Monday 21 January 2013

Context Menus Example in Android

Project Structure :


 

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"
    tools:context=".MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:text="@string/hello_world" />

</RelativeLayout>

context_menu.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android" >

    <item
        android:id="@+id/view"
        android:title="View"/>
    <item
        android:id="@+id/save"
        android:title="Save"/>
    <item
        android:id="@+id/edit"
        android:title="Edit"/>
    <item
        android:id="@+id/delete"
        android:title="Delete"/>

</menu>

strings.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <string name="app_name">context-menus-example</string>
    <string name="hello_world">Hello world!</string>
    <string name="menu_settings">Settings</string>

    <string-array name="name_list">
        <item>Aakash</item>
        <item>Akshay</item>
        <item>Ashwin</item>
        <item>Mahesh</item>
        <item>Mrithula</item>
        <item>Rajesh</item>
        <item>Sabari</item>
        <item>Sai</item>
        <item>Sneha</item>
        <item>Sonika</item>
        <item>Sruthi</item>
        <item>Yeshwanthi</item>
    </string-array>

</resources>

MainActivity.java

package com.rajeshvijayakumar.context_menus_example;

import android.app.ListActivity;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView.AdapterContextMenuInfo;
import android.widget.ArrayAdapter;
import android.widget.Toast;

public class MainActivity extends ListActivity {

    private String selectedName = "";
    private String[] nameList;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        nameList = getResources().getStringArray(R.array.name_list);

        setListAdapter(new ArrayAdapter<String>(this,
                android.R.layout.simple_list_item_1, nameList));

        registerForContextMenu(getListView());

    }

    public void onCreateContextMenu(ContextMenu menu, View v,
            ContextMenuInfo menuInfo) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.context_menu, menu);
    }

    public boolean onContextItemSelected(MenuItem item) {

        AdapterContextMenuInfo adapInfo = (AdapterContextMenuInfo) item
                .getMenuInfo();
        selectedName = nameList[(int) adapInfo.id];

        switch (item.getItemId()) {
        case R.id.view:
            Toast.makeText(MainActivity.this,
                    "You have pressed View Context Menu for " + selectedName,
                    Toast.LENGTH_LONG).show();
            return true;
        case R.id.save:
            Toast.makeText(MainActivity.this,
                    "You have pressed Save Context Menu for " + selectedName,
                    Toast.LENGTH_LONG).show();
            return true;
        case R.id.edit:
            Toast.makeText(MainActivity.this,
                    "You have pressed Edit Context Menu for " + selectedName,
                    Toast.LENGTH_LONG).show();
            return true;
        case R.id.delete:
            Toast.makeText(MainActivity.this,
                    "You have pressed Delete Context Menu for " + selectedName,
                    Toast.LENGTH_LONG).show();
            return true;
        }
        return false;
    }
}

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.rajeshvijayakumar.context_menus_example"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="7"
        android:targetSdkVersion="16" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

Output :






Android Source Code : Download this Example Here

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