How to find Serial number of Android device?

AndroidApps/ApplicationsMobile Development

This example demonstrates how do I find serial number of android device.

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"
   tools:context=".MainActivity">
   <TextView
      android:id="@+id/textView"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_centerInParent="true"
      android:layout_below="@id/button"
      android:layout_marginTop="16sp"/>
   <Button
      android:id="@+id/button"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:onClick="showDeviceInfo"
      android:text="Get Serial Number"
      android:layout_centerInParent="true"/>
</RelativeLayout>

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

import android.Manifest;
import android.app.AlertDialog;
import android.content.pm.PackageManager;
import android.support.v4.content.ContextCompat;
import android.os.Build;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.telephony.TelephonyManager;
import android.view.View;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
   public static final int REQUEST_CODE_PHONE_STATE_READ = 100;
   private int checkedPermission = PackageManager.PERMISSION_DENIED;
   TelephonyManager manager;
   @Override
   protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      checkedPermission = ContextCompat.checkSelfPermission(MainActivity.this,
      Manifest.permission.READ_PHONE_STATE);
      if (Build.VERSION.SDK_INT >= 23 && checkedPermission != PackageManager.PERMISSION_GRANTED) {
         requestPermission();
      } else
         checkedPermission = PackageManager.PERMISSION_GRANTED;
   }
   private void requestPermission() {
      Toast.makeText(MainActivity.this, "Requesting permission", Toast.LENGTH_SHORT).show();
      this.requestPermissions(new String[]{Manifest.permission.READ_PHONE_STATE},
      REQUEST_CODE_PHONE_STATE_READ);
   }
   public void showDeviceInfo(View v) {
      manager = (TelephonyManager) getSystemService(this.TELEPHONY_SERVICE);
      AlertDialog.Builder dBuilder = new AlertDialog.Builder(this);
      StringBuilder stringBuilder = new StringBuilder();
      if (checkedPermission != PackageManager.PERMISSION_DENIED) {
         dBuilder.setTitle("Device Info");
         stringBuilder.append("SERIAL : " + Build.SERIAL + "\n");
      } else {
         dBuilder.setTitle("Permission denied");
         stringBuilder.append("Can't access device info !");
      }
      dBuilder.setMessage(stringBuilder);
      dBuilder.show();
   }
   @Override
   public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
      switch (requestCode) {
         case REQUEST_CODE_PHONE_STATE_READ:
         if (grantResults.length > 0 && grantResults[0]== PackageManager.PERMISSION_GRANTED ) {
            checkedPermission = PackageManager.PERMISSION_GRANTED;
         }
         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">
   <uses-permission android:name = "android.permission.INTERNET"/>
   <uses-permission android:name = "android.permission.READ_PHONE_STATE" />
   <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 Play Icon 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.

raja
Published on 21-Aug-2019 11:37:04
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