How do detect Android user agent type in general?

This example demonstrates how do I detect an Android user agent type in general in android.

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"?>
<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:padding="16dp"
   tools:context=".MainActivity">
   <TextView
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:text="Detect Android user agent type in general"
      android:textSize="24sp"
      android:textStyle="bold"/>
</RelativeLayout>

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

import androidx.appcompat.app.AppCompatActivity;
import android.content.Context;
import android.media.AudioManager;
import android.os.Bundle;
import android.widget.Toast;
import java.util.Objects;
public class MainActivity extends AppCompatActivity {
   @Override
   protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      AudioManager am = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
      switch (Objects.requireNonNull(am).getRingerMode()) {
         case AudioManager.RINGER_MODE_SILENT:
            Toast.makeText(MainActivity.this, "Silent Mode", Toast.LENGTH_SHORT).show();
            break;
         case AudioManager.RINGER_MODE_VIBRATE:
            Toast.makeText(MainActivity.this, "Vibrate Mode", Toast.LENGTH_SHORT).show();
            break;
         case AudioManager.RINGER_MODE_NORMAL:
            Toast.makeText(MainActivity.this, "Normal Mode", Toast.LENGTH_SHORT).show();
            break;
      }
   }
}

Step 4 − 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 the 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 −

Click here to download the project code.