Introduction

This article explains how to create a global broadcast receiver as well as to create services in an Android project. First of all, we will create a new project in Android.
Procedure
  1. Start the Eclipse IDE.
  2. Create a new project.
  3. Create a MainActivity.java (here Abhijeet.java) file.
  4. Create a new java file bootstartup.java as in the following:
    1. public class bootstartup extends BroadcastReceiver {
    3. @Override
    5. public void onReceive(Context context, Intent intent) {
    7. // start the service
    8. Intent service=new Intent(context,TestService.class);
    9. context.startService(service);
    10. Log.e("com.example.myglobalbroadcastreceiver",
    11. "BroadcastReceived:"+intent.getAction())
    13. // start the app
    14. Intent app= new Intent(context,Abhijeet.class);
    15. context.startService(app);
    1. Create a new java file TestService.java as in the following:
      1. public class TestService extends Service {
      3. @Override
      4. public IBinder onBind(Intent arg0) {
      5. // TODO Auto-generated method stub
      6. throw new UnsupportedOperationException("it is not implemented");
      7. }
      9. @Override
      10. public void onCreate() {
      11. // TODO Auto-generated method stub
      12. super.onCreate();
      13. Toast.makeText(getApplicationContext(), "abhijeet's Service is created",1).show();
      15. }
      17. @Override
      18. public void onDestroy() {
      19. // TODO Auto-generated method stub
      21. Toast.makeText(getApplicationContext(), "Service is destroyed",1).show();
      23. super.onDestroy();
      24. }
      26. @Override
      27. public int onStartCommand(Intent intent, int flags, int startId) {
      28. // TODO Auto-generated method stub
      30. Toast.makeText(getApplicationContext(), " abhijeet's Service is working",1).show();
      32. return super.onStartCommand(intent, flags, startId);
      33. }
      1. Now add a bootstartup.java file as a receiver.
        Step 1: Open the application of the manifest file as in the following:
        Manifest File
        Step 2: Then click on Add for adding a receiver.
        Adding Reciever
        Step 3: It will automatically search the bootstartup receiver class.
        Reciever Class
        Step 4: It is very important for making a global receiver that we should provide a name to that receiver such that the name is started with a dot followed by a lower-case letter.
        Global Reciever
        Step 5: Set the Exported and Enabled properties to true as in the following:
        Enabling Property
        Step 6: Add actions on the receiver in the manifest file as in the following:
        Adding Actions
      2. Now add a TestService.java file as a Service in the manifest file.
        Step 1: Select Service.
        Select Service
        Step 2: It will automatically search the TestService class.
        Adding Class
        Step 3: Select the true option for the exported and enabled properties as in the following:
        1. <service android:name="TestService" android:exported="true" android:enabled="true" android:permission="android.permission.INTERNET"></service>
      Code- Abhijeet.java
      1. package com.example.myglobalbroadcastreceiver;
      2. import android.support.v7.app.ActionBarActivity;
      3. import android.support.v7.app.ActionBar;
      4. import android.support.v4.app.Fragment;
      5. import android.os.Bundle;
      6. import android.view.LayoutInflater;
      7. import android.view.Menu;
      8. import android.view.MenuItem;
      9. import android.view.View;
      10. import android.view.ViewGroup;
      11. import android.os.Build;
      13. public class Abhijeet extends ActionBarActivity {
      15. @Override
      16. protected void onCreate(Bundle savedInstanceState) {
      17. super.onCreate(savedInstanceState);
      18. setContentView(R.layout.activity_abhijeet);
      20. if (savedInstanceState == null) {
      21. getSupportFragmentManager().beginTransaction()
      22. .add(R.id.container, new PlaceholderFragment()).commit();
      23. }
      24. }
      26. @Override
      27. public boolean onCreateOptionsMenu(Menu menu) {
      29. // Inflate the menu; this adds items to the action bar if it is present.
      30. getMenuInflater().inflate(R.menu.abhijeet, menu);
      31. return true;
      32. }
      34. @Override
      35. public boolean onOptionsItemSelected(MenuItem item) {
      36. // Handle action bar item clicks here. The action bar will
      37. // automatically handle clicks on the Home/Up button, so long
      38. // as you specify a parent activity in AndroidManifest.xml.
      39. int id = item.getItemId();
      40. if (id == R.id.action_settings) {
      41. return true;
      42. }
      43. return super.onOptionsItemSelected(item);
      44. }
      46. /**
      47. * A placeholder fragment containing a simple view.
      48. */
      49. public static class PlaceholderFragment extends Fragment {
      51. public PlaceholderFragment() {
      52. }
      53. @Override
      54. public View onCreateView(LayoutInflater inflater, ViewGroup container,
      55. Bundle savedInstanceState) {
      56. View rootView = inflater.inflate(R.layout.fragment_abhijeet,
      57. container, false);
      58. return rootView;
      59. }
      60. }
      61. }
        bootstartup.java
        1. package com.example.myglobalbroadcastreceiver;
        2. import android.content.BroadcastReceiver;
        3. import android.content.Context;
        4. import android.content.Intent;
        5. import android.util.Log;
        7. public class bootstartup extends BroadcastReceiver {
        9. @Override
        11. public void onReceive(Context context, Intent intent) {
        12. // TODO Auto-generated method stub
        13. // start the service
        14. Intent service=new Intent(context,TestService.class);
        15. context.startService(service);
        16. Log.e("com.example.myglobalbroadcastreceiver","Broadcast Received:"+intent.getAction());
        18. // start the app
        19. Intent app= new Intent(context,Abhijeet.class);
        20. context.startService(app);
        21. }
        22. }
          TestService.java
          1. package com.example.myglobalbroadcastreceiver;
          2. import android.app.Service;
          3. import android.content.Intent;
          4. import android.os.IBinder;
          5. import android.widget.Toast;
          7. public class TestService extends Service {
          9. @Override
          10. public IBinder onBind(Intent arg0) {
          11. // TODO Auto-generated method stub
          12. throw new UnsupportedOperationException("it is not implemented");
          13. }
          15. @Override
          16. public void onCreate() {
          17. // TODO Auto-generated method stub
          18. super.onCreate();
          19. Toast.makeText(getApplicationContext(), "abhijeet's Service is created",1).show();
          20. }
          22. @Override
          23. public void onDestroy() {
          24. // TODO Auto-generated method stub
          25. Toast.makeText(getApplicationContext(), "Service is destroyed",1).show();
          26. super.onDestroy();
          27. }
          29. @Override
          30. public int onStartCommand(Intent intent, int flags, int startId) {
          31. // TODO Auto-generated method stub
          32. Toast.makeText(getApplicationContext(), " abhijeet's Service is working",1).show();
          33. return super.onStartCommand(intent, flags, startId);
          34. }
          35. }
            Output
            Step 1: Run the Application.
            Running Application on Android
            Step 2: Click on the back button.
            Clicking on Back Button
            Step 3: Go to Settings.
            Settings on Android App
            Step 4: Go to Data Usage and turn on the mobile data. We can see that the service is working. It is due to the action used in the receiver.
            <action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
            Data Usage of Android App