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Android Option Menu

  • Android Option Menus are the primary menus of android. They can be used for settings, search, delete item etc.
  • Here, we are inflating the menu by calling the inflate() method of MenuInflater class.
  • To perform event handling on menu items, you need to override onOptionsItemSelected() method of Activity class.

Android Option Menu Example

1. activity_main.xml

File: 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" >  
  
    <TextView  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:text="@string/hello_world" />  
  
</RelativeLayout>  

2. menu.xml

It contains three items as show below. It is created automatically inside the res/menu directory.
File: res/menu/menu.xml


<menu xmlns:androclass="http://schemas.android.com/apk/res/android" >  
    <item  android:id="@+id/item1"  
        android:title="Item 1"/>  
    <item  android:id="@+id/item2"  
        android:title="Item 2"/>  
    <item  android:id="@+id/item3"  
        android:title="Item 3"/>  
</menu>

3. Activity class

This class displays the content of menu.xml file and performs event handling on clicking the menu items.
File: MainActivity.java

import android.os.Bundle;  
import android.app.Activity;  
import android.view.Menu;  
import android.view.MenuItem;  
import android.widget.Toast;  
public class MainActivity extends Activity {  
    @Override  
    protected void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.activity_main);  
    }  
    @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);//Menu Resource, Menu  
        return true;  
    }  
    @Override  
    public boolean onOptionsItemSelected(MenuItem item) {  
        switch (item.getItemId()) {  
            case R.id.item1:  
              Toast.makeText(getApplicationContext(),"Item 1 Selected",Toast.LENGTH_LONG).show();  
            return true;     
           case R.id.item2:  
                Toast.makeText(getApplicationContext(),"Item 2 Selected",Toast.LENGTH_LONG).show();  
              return true;     
            case R.id.item3:  
                Toast.makeText(getApplicationContext(),"Item 3 Selected",Toast.LENGTH_LONG).show();  
              return true;     
              default:  
                return super.onOptionsItemSelected(item);  
        }  
    }  
} 


OUTPUT :
Output after clicking on the menu button.

Output after clicking on the second menu item .

4. Option Menu with Icon

  • You need to have icon images inside the res/drawable directory.
  • The android:icon element is used to display the icon on the option menu.
  • You can write the string information in the strings.xml file.
  • But we have written it inside the menu_main.xml file.
File: menu_main.xml


<menu xmlns:androclass="http://schemas.android.com/apk/res/android" >  
    <item  android:id="@+id/item1"  
        android:icon="@drawable/add"  
        android:title="Item 1"/>  
    <item  android:id="@+id/item2"  
        android:icon="@drawable/minus"  
        android:title="Item 2"/>  
    <item  android:id="@+id/item3"  
        android:icon="@drawable/delete"  
        android:title="Item 3"/>  
</menu>