Telephony Manager Demo in Android

Hello Friends!

                Today I am going to share very simple code for getting call state in Android using Telephony Manager.

1-PrintScreen:

2-manifest.xml

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.manish.telephony"

    android:versionCode="1"

    android:versionName="1.0" >

    <uses-sdk android:minSdkVersion="15" />

    <uses-permission android:name="android.permission.READ_PHONE_STATE" />

    <application

        android:icon="@drawable/ic_launcher"

        android:label="@string/app_name" >

        <activity

            android:label="@string/app_name"

            android:name=".TelephonyManagerDemoActivity" >

            <intent-filter >

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

    </application>

</manifest>

3-TelephonyManagerDemoActivity.java

package com.manish.telephony;

import android.app.Activity;

import android.content.Context;

import android.os.Bundle;

import android.telephony.PhoneStateListener;

import android.telephony.TelephonyManager;

import android.widget.TextView;

public class TelephonyManagerDemoActivity extends Activity {

        TextView textView;

         TelephonyManager telephonyManager;

         PhoneStateListener listener;

         /** Called when the activity is first created. */

         @Override

         public void onCreate(Bundle savedInstanceState) {

           super.onCreate(savedInstanceState);

           setContentView(R.layout.main);

           textView = (TextView) findViewById(R.id.text1);

           // Get the telephony manager

           telephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);

           // Create a new PhoneStateListener

           listener = new PhoneStateListener() {

             @Override

             public void onCallStateChanged(int state, String incomingNumber) {

               String stateString = "N/A";

               switch (state) {

               case TelephonyManager.CALL_STATE_IDLE:

                 stateString = "Idle";

                 break;

               case TelephonyManager.CALL_STATE_OFFHOOK:

                 stateString = "Off Hook";

                 break;

               case TelephonyManager.CALL_STATE_RINGING:

                 stateString = "Ringing";

                 break;

             

               }

               textView.append(String.format("\nCallState: %s", stateString));

             }

           };

           // Register the listener wit the telephony manager

           telephonyManager.listen(listener, PhoneStateListener.LISTEN_CALL_STATE);

         }

       }

4-main.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout

       xmlns:android="http://schemas.android.com/apk/res/android"

       android:orientation="vertical"

       android:layout_width="fill_parent"

       android:layout_height="fill_parent">

       <TextView

              android:layout_width="fill_parent"

              android:layout_height="wrap_content"

              android:text="Telephony Manager Demo"

              android:textSize="22sp" />

       <TextView

              android:layout_width="wrap_content"

              android:layout_height="wrap_content"

              android:id="@+id/text1"

              android:text="Result"></TextView>

</LinearLayout>