How to change android overflow menu icon programmatically?

This example demonstrates how do I change android overflow menu icon programmatically.

Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.

Step 2 − Add the following code to res/layout/activity_main.xml.

<?xml version="1.0" encoding="utf-8"?> <LinearLayout 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:orientation="vertical"    tools:context=".MainActivity">    <android.support.v7.widget.Toolbar       android:id="@+id/toolbar"       android:layout_width="match_parent"       android:layout_height="wrap_content">    </android.support.v7.widget.Toolbar> </LinearLayout>

Step 3 − Add the following code to src/MainActivity.java

import android.graphics.Color; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.support.v7.widget.Toolbar; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.widget.Toast; public class MainActivity extends AppCompatActivity {    Toolbar toolbar;    @Override    public void onCreate(Bundle savedInstanceState) {       super.onCreate(savedInstanceState);       setContentView(R.layout.activity_main);       toolbar = findViewById(R.id.toolbar);       toolbar.setTitle("MyToolBar");       toolbar.setTitleTextColor(Color.WHITE);       //setSupportActionBar(toolbar);    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {       MenuInflater inflater = getMenuInflater();       inflater.inflate(R.menu.mymenu, menu);       return true;    }    @Override    public boolean onOptionsItemSelected(MenuItem item) {       switch (item.getItemId()) {          case R.id.option1:             Toast.makeText(getApplicationContext(),"Bluetooth Option Selected",             Toast.LENGTH_SHORT).show();             return true;          case R.id.option2:             Toast.makeText(getApplicationContext(),"Call Option Selected",Toast.LENGTH_SHORT).show();             return true;          case R.id.option3:             Toast.makeText(getApplicationContext(),"About Option Selected",Toast.LENGTH_SHORT).show();             return true;          case R.id.option4:             Toast.makeText(getApplicationContext(),"Chat Option Selected",Toast.LENGTH_SHORT).show();             return true;          default:             return super.onOptionsItemSelected(item);       }    }    @Override    public boolean onPrepareOptionsMenu(Menu menu) {       invalidateOptionsMenu();       menu.findItem(R.id.option2).setVisible(false);       menu.findItem(R.id.option4).setVisible(true);       return super.onPrepareOptionsMenu(menu);    } }

Step 4 – Create a menu resource file (mymenu.xml) and add the following code

<?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/option1"       android:orderInCategory="1"       android:title="Bluetooth"       android:icon="@drawable/ic_bluetooth"       app:showAsAction="ifRoom" />    <item       android:id="@+id/option2"       android:orderInCategory="2"       android:title="Call"       android:icon="@drawable/ic_call"       app:showAsAction="ifRoom|collapseActionView" />    <item android:id="@+id/option4"       android:title="Chat"       android:visible="false"       android:orderInCategory="3"       android:icon="@drawable/ic_chat"       app:showAsAction="ifRoom|collapseActionView"/>    <item       android:id="@+id/option3"       android:title="About"       app:showAsAction="never" /> </menu>

Step 5 − Add the following code to androidManifest.xml

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="app.com.sample">    <application       android:allowBackup="true"       android:icon="@mipmap/ic_launcher"       android:label="@string/app_name"       android:roundIcon="@mipmap/ic_launcher_round"       android:supportsRtl="true"       android:theme="@style/AppTheme">       <activity android:name=".MainActivity">          <intent-filter>             <action android:name="android.intent.action.MAIN" />             <category android:name="android.intent.category.LAUNCHER" />          </intent-filter>       </activity>    </application> </manifest>

Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from android studio, open one of your project's activity files and click Run  icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen –