Android tutorial - Android TelephonyManager - android app development - android studio - android development tutorial



Definition of TelephonyManager:

 configuration of sim
  • Provides access to information about the telephony services on the device.
  • Applications can use the methods in this class to determine telephony services and states, as well as to access some types of subscriber information.
  • Applications can also register a listener to receive notification of telephony state changes.
  • The android.telephony.TelephonyManager class provides information about the telephony services such as subscriber id, sim serial number, phone network type etc.
  • Moreover, you can determine the phone state etc.
 manager view of telephony

Android TelephonyManager Example

  • Let's see the simple example of TelephonyManager that prints information of the telephony services.
android development tutorial

activity_main.xml

  • Drag one textview from the pallete, now the xml file will look like this.

File: activity_main.xml

android codes - android tutorial - android sdk
	<RelativeLayout xmlns:androclass="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:id="@+id/textView1"  
	        android:layout_width="wrap_content"  
	        android:layout_height="wrap_content"  
	        android:layout_alignParentLeft="true"  
	        android:layout_alignParentTop="true"  
	        android:layout_marginLeft="38dp"  
	        android:layout_marginTop="30dp"  
	        android:text="Phone Details:" />  
	  
	</RelativeLayout>  
click below button to copy the code from android tutorial team
android programming - android software - android emulator

Activity class

  • Now, write the code to display the information about the telephony services.

File: MainActivity.java

android codes - android tutorial - android sdk
package com.wikitechy.telephonymanager;  
	  
import android.os.Bundle;  
import android.app.Activity;  
import android.content.Context;  
import android.telephony.TelephonyManager;  
import android.view.Menu;  
import android.widget.TextView;  
	  
public class MainActivity extends Activity {  
    TextView textView1;  
        @Override  
        protected void onCreate(Bundle savedInstanceState) {  
            super.onCreate(savedInstanceState);  
            setContentView(R.layout.activity_main);  
	          
              textView1=(TextView)findViewById(R.id.textView1);  
	         
             //Get the instance of TelephonyManager  
             TelephonyManager  tm=(TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);  
	         
             //Calling the methods of TelephonyManager the returns the information  
             String IMEINumber=tm.getDeviceId();  
             String subscriberID=tm.getDeviceId();  
             String SIMSerialNumber=tm.getSimSerialNumber();  
             String networkCountryISO=tm.getNetworkCountryIso();  
             String SIMCountryISO=tm.getSimCountryIso();  
             String softwareVersion=tm.getDeviceSoftwareVersion();  
             String voiceMailNumber=tm.getVoiceMailNumber();  
	          
              //Get the phone type  
              String strphoneType="";  
	          
              int phoneType=tm.getPhoneType();  
	  
      switch (phoneType)   
      {  
        case (TelephonyManager.PHONE_TYPE_CDMA):  
            strphoneType="CDMA";  
                break;  
        case (TelephonyManager.PHONE_TYPE_GSM):   
            strphoneType="GSM";                
                break;  
        case (TelephonyManager.PHONE_TYPE_NONE):  
            strphoneType="NONE";                
                break;  
        }  
	          
              //getting information if phone is in roaming  
              boolean isRoaming=tm.isNetworkRoaming();  
	          
              String info="Phone Details:\n";  
              info+="\n IMEI Number:"+IMEINumber;  
              info+="\n SubscriberID:"+subscriberID;  
              info+="\n Sim Serial Number:"+SIMSerialNumber;  
              info+="\n Network Country ISO:"+networkCountryISO;  
              info+="\n SIM Country ISO:"+SIMCountryISO;  
              info+="\n Software Version:"+softwareVersion;  
              info+="\n Voice Mail Number:"+voiceMailNumber;  
              info+="\n Phone Network Type:"+strphoneType;  
              info+="\n In Roaming? :"+isRoaming;  
	          
              textView1.setText(info);//displaying the information in the textView  
    }  
	  
	     
}  
click below button to copy the code from android tutorial team

AndroidManifest.xml

  • You need to provide READ_PHONE_STATE permission in the AndroidManifest.xml file.

File: AndroidManifest.xml

android codes - android tutorial - android sdk
	<?xml version="1.0" encoding="utf-8"?>  
	<manifest xmlns:androclass="http://schemas.android.com/apk/res/android"  
	    package="com.wikitechy.telephonymanager"  
	    android:versionCode="1"  
	    android:versionName="1.0" >  
	  
	    <uses-sdk  
	        android:minSdkVersion="8"  
	        android:targetSdkVersion="17" />  
	  
	    <uses-permission android:name="android.permission.READ_PHONE_STATE"/>   
	      
	    <application  
	        android:allowBackup="true"  
	        android:icon="@drawable/ic_launcher"  
	        android:label="@string/app_name"  
	        android:theme="@style/AppTheme" >  
	        <activity  
	            android:name="com.wikitechy.telephonymanager.MainActivity"  
	            android:label="@string/app_name" >  
	            <intent-filter>  
	                <action android:name="android.intent.action.MAIN" />  
	  
	                <category android:name="android.intent.category.LAUNCHER" />  
	            </intent-filter>  
	        </activity>  
	    </application>  
	  
	</manifest>  
click below button to copy the code from android tutorial team
android programming - android software - android emulator

Output:

 output of telephony

Related Searches to Android TelephonyManager