Blocking Incoming call - Android

Step 1:
Create Broadcast receiver class for incoming call

package com.javaorigin.android.sample;

import java.lang.reflect.Method;

import com.android.internal.telephony.ITelephony;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent
import android.telephony.TelephonyManager;
import android.util.Log;

public class PhoneCallReceiver extends BroadcastReceiver {
 Context context = null;
 private static final String TAG = "Phone call";
 private ITelephony telephonyService;

 @Override
 public void onReceive(Context context, Intent intent) {
  Log.v(TAG, "Receving....");
  TelephonyManager telephony = (TelephonyManager) 
  context.getSystemService(Context.TELEPHONY_SERVICE);  
  try {
   Class c = Class.forName(telephony.getClass().getName());
   Method m = c.getDeclaredMethod("getITelephony");
   m.setAccessible(true);
   telephonyService = (ITelephony) m.invoke(telephony);
   //telephonyService.silenceRinger();
   telephonyService.endCall();
  } catch (Exception e) {
   e.printStackTrace();
  }
  
 }

 
}

Step 2:
Create IDL interface for getting core Telephony service
package name must be com.android.internal.telephony

FileName : ITelephony.aidl

  package com.android.internal.telephony;

  interface ITelephony {

   
    boolean endCall();

  
    void answerRingingCall();

   
    void silenceRinger();

  }

Step 3:
AndroidManifest.xml configuration

  <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.javaorigin.android.sample"
      android:versionCode="1"
      android:versionName="1.0">  
    <application android:icon="@drawable/icon" android:label="@string/app_name">

        <receiver  android:name=".PhoneCallReceiver">
            <intent-filter  android:priority="100" >
                <action android:name="android.intent.action.PHONE_STATE" />
            </intent-filter>
        </receiver>

    </application>
    <uses-sdk android:minSdkVersion="5" />
    <uses-permission android:name="android.permission.MODIFY_PHONE_STATE" />
    <uses-permission android:name="android.permission.CALL_PHONE" />
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />

    <uses-sdk android:minSdkVersion="8" />

</manifest>

Receiving SMS Using BroadcastReceiver and Intent

The following sample program is describe how to Receive sms using broadcast receiver with Intent
Step 1
Create broadcast receiver class for receiving sms

package com.javaorigin.android.sample;

import android.content.*;
import android.os.Bundle;
import android.telephony.*;
import android.util.Log;
import android.widget.Toast;

public class SimpleSmsReciever extends BroadcastReceiver {

 private static final String TAG = "Message recieved";

 @Override
 public void onReceive(Context context, Intent intent) {    
     Bundle pudsBundle = intent.getExtras();
     Object[] pdus = (Object[]) pudsBundle.get("pdus");
     SmsMessage messages =SmsMessage.createFromPdu((byte[]) pdus[0]);    
     Log.i(TAG,  messages.getMessageBody());
     Toast.makeText(context, "SMS Received : "+messages.getMessageBody(),
     Toast.LENGTH_LONG).show();
 }

}

Step 2 :
Configure the AndroidManifest.xml file

<?xml version="1.0" encoding="utf-8"?>
<manifest android="http://schemas.android.com/apk/res/android" 
package="com.javaorigin.android.sample" versioncode="1" versionname="1.0">
 <application icon="@drawable/icon" label="@string/app_name">
     <receiver name=".SimpleSmsReciever">
         <intent-filter>
             <action name="android.provider.Telephony.SMS_RECEIVED">
            </action>
         </intent-filter>
     </receiver>
</application>
 <uses-sdk minsdkversion="6">
 <uses-permission name="android.permission.INTERNET">

Basic Android background Service

Running sample program for background service

Step 1 :
Create sample service class

package com.javaorigin.android.sample.service;

import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.util.Log;
import android.widget.Toast;

public class MyService extends Service {
 
   String tag="TestService";
   @Override
   public void onCreate() {
       super.onCreate();
       Toast.makeText(this, "Service created...", Toast.LENGTH_LONG).show();      
       Log.i(tag, "Service created...");
   }
 
   @Override
   public void onStart(Intent intent, int startId) {      
       super.onStart(intent, startId);  
       Log.i(tag, "Service started...");
   }
   @Override
   public void onDestroy() {
       super.onDestroy();
       Toast.makeText(this, "Service destroyed...", Toast.LENGTH_LONG).show();
   }

   @Override
   public IBinder onBind(Intent intent) {
       return null;
   }
}

Step 2 :
Create sample Activity class

package com.javaorigin.android.sample.service;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;
import android.widget.Toast;

public class SampleAction extends Activity {
   @Override
   protected void onCreate(Bundle savedInstanceState) {      
       super.onCreate(savedInstanceState);
       TextView view = new TextView(this);      
       view.setText("Service Test");
       Intent i = new Intent();
       i.setClassName( "com.javaorigin.android.sample.service",
        "com.javaorigin.android.sample.service.MyService" );
       bindService( i, null, Context.BIND_AUTO_CREATE);
       this.startService(i);      
       setContentView(view);
   }
}

Step 3:
Configure AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
   package="com.javaorigin.android.sample.service" android:versionCode="1"
   android:versionName="1.0">
   <application icon="@drawable/icon" label="@string/app_name">
       <service class=".MyService" name=".MyService">
         <intent-filter>
           <action android:value="com.javaorigin.android.sample.service.MY_SERVICE"
                   android:name=".MyService" />

           </intent-filter>
       </service>
      <activity android:name=".SampleAction"
                 android:label="@string/app_name">
           <intent-filter>
               <action name="android.intent.action.MAIN">
               <category name="android.intent.category.LAUNCHER">
           </intent-filter>
       </activity>

   </application>
   <uses-sdk minsdkversion="8">

</manifest>

Android Reading Inbox SMS

Sample source code for reading inbox sms

import android.app.Activity;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.widget.TextView;

public class SMSRead extends Activity {

  @Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      TextView view = new TextView(this);
      Uri uriSMSURI = Uri.parse("content://sms/inbox");
      Cursor cur = getContentResolver().query(uriSMSURI, null, null, null,null);
      String sms = "";
      while (cur.moveToNext()) {
          sms += "From :" + cur.getString(2) + " : " + cur.getString(11)+"\n";         
      }
      view.setText(sms);
      setContentView(view);
  }
}

Add below permission to AndroidManifest.xml

   
<uses-permission name="android.permission.READ_SMS" />