Skip to main content

Options Menu with Sub Items






In this tutorial we will create an options menu in Android Studio, which contains icons, drop down menus and sub items. The menu will be displayed in the app bar. For this we will override onCreateOptionsMenu and pass our own menu.xml file. Also we will handle click events on the single items in the onOptionsItemSelected method.

 In MainActivity.java class file add these lines of codes:-

 import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.example_menu, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case R.id.item1:
                Toast.makeText(this, "Item 1 selected", Toast.LENGTH_SHORT).show();
                return true;
            case R.id.item2:
                Toast.makeText(this, "Item 2 selected", Toast.LENGTH_SHORT).show();
                return true;
            case R.id.item3:
                Toast.makeText(this, "Item 3 selected", Toast.LENGTH_SHORT).show();
                return true;
            case R.id.subitem1:
                Toast.makeText(this, "Sub Item 1 selected", Toast.LENGTH_SHORT).show();
                return true;
            case R.id.subitem2:
                Toast.makeText(this, "Sub Item 2 selected", Toast.LENGTH_SHORT).show();
                return true;
            default:
                return super.onOptionsItemSelected(item);
        }
    }

}

 In res file add menu file directory within it add example_menu.xml file for options menu creation:-

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

    <item
        android:id="@+id/item1"
        android:icon="@drawable/ic_icon"
        android:title="Item 1"
        app:showAsAction="ifRoom" />

    <item
        android:id="@+id/item2"
        android:title="Item 2"
        app:showAsAction="never" />

    <item
        android:id="@+id/item3"
        android:title="Item 3"
        app:showAsAction="never">

        <menu>

            <item
                android:id="@+id/subitem1"
                android:title="Sub Item 1" />

            <item
                android:id="@+id/subitem2"
                android:title="Sub Item 2" />

        </menu>

    </item>


</menu>

 Now Run your app. you will see on Toolbar option menu will be created and toast message will appear on screen on selection of different options.
Location: Chandigarh, India

Comments

Post a Comment

Popular posts from this blog

Why Ethereum Smart Contracts Make It Hard to Get Payments

  The Unique Role of Smart Contracts in Ethereum One of Ethereum’s standout features is its ability to host diverse applications on its blockchain using smart contracts. However, these smart contracts, while powerful, sometimes complicate simple tasks. For instance, determining the amount of ETH deposited into a specific Ethereum address can be surprisingly complex. This is because you cannot understand the actions of a smart contract without executing it. Synchronizing Blockchain Internals and Externals Smart contracts operate exclusively within the blockchain's data, reading and writing information stored on-chain. This limitation does not prevent the creation of valuable applications, such as multi-signature wallets or tokens like ERC-20 and ERC-721, which rely solely on on-chain data. However, most practical applications also require interaction with off-chain systems. Take cryptocurrency exchanges, for example. Exchanges facilitate converting ETH into fiat currency or vice ver...
Post a Comment
Read more

Room + ViewModel + LiveData + RecyclerView (MVVM)

Part 1 - Introduction Part 2 – Entity Part 3 – DAO & RoomDatabase Part 4 – Repository Part 5 – ViewModel Part 6 – RecyclerView + Adapter Part 7 – Add Note Activity Part 8 – Swipe to Delete Part 9 – OnItemClickListener & Update Functionality Part 10 – ListAdapter                     Part 1 - Introduction In this tutorial we will build a note taking app, using the Android Architecture Component libraries (Room, ViewModel, LiveData and LifeCycle), a RecyclerView and Java. The data will be stored in an SQLite database and supports insert, read, update and delete operations. For this we will follow the official recommendations from the “Guide to App Architecture” (link below). In part 1 we will learn what the Architecture Components are, how they work and why we need them. We will learn about the problems that arise from the Activity and Fragment lifecycle, configuration changes and bloated, tightly coupled cl...
Post a Comment
Read more

DodgeInsetEdges

The layout_dodgeInsetEdges together with the layout_insetEdge attribute, to move views within a CoordinatorLayout out of the way of other views. This behavior is the default behavior for FloatingActionButtons and Snackbars , but we will also apply it to views like normal buttons and bottom sheets. In Mainactivity.java add the code below stated:- import android.support.design.widget.BottomSheetBehavior; import android.support.design.widget.FloatingActionButton; import android.support.design.widget.Snackbar; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; public class MainActivity extends AppCompatActivity {     private BottomSheetBehavior bottomSheetBehavior;     @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activ...
Post a Comment
Read more