Register Broadcast Receiver from another Broadcast Receiver in android

Question

Currently I have Broadcast Receiver for listening call states events. I have registered Broadcast Receiver in AndroidManifest.xml as shown below.

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

When Application launches this broadcast receiver is registered for listening call states events and according to CALL_STATE i am managing my application.

It is working fine until phone restarts. After phone restart this broadcast receiver stops working. I know I have to register receiver for listening BOOT_COMPLETED event of system.

What i have done is like shown below:

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

I have also given Permission for getting BOOT_COMPLETED system event.

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

but somehow it is not working. I am thinking of making new Broadcast Receiver that listens for BOOT_COMPLETED event only but issue is that

So my questions is how can i start this Phone Call Listener Broadcast Receiver when any incoming call comes in?

How can i register Broadcast Receiver from another Broadcast Receiver

Do i have to move my existing broadcast receiver's code to service so i can start service from Boot Receiver?

Any help will be appreciated.

Answer 1

Any Other answers are welcome.

I have solved it by creating new Broadcast receiver and onReceive() method of that Broadcast receiver will be called when phone restarts then i have dynamically register READ_PHONE_STATE broadcast receiver that is also manifest registered receiver.

Below is code:

AndroidManifest.xml:

<receiver android:name=".api.ServiceStarter">
     <intent-filter>
         <action android:name="android.intent.action.BOOT_COMPLETED" />
     </intent-filter>
</receiver>

BroadcastReceiver:

public class ServiceStarter extends BroadcastReceiver{

    @Override
    public void onReceive(Context context, Intent intent) {
        IntentFilter filter = new IntentFilter();
        filter.addAction("android.intent.action.PHONE_STATE");
        PhoneCallReceiver receiver = new PhoneCallReceiver();
        context.getApplicationContext().registerReceiver(receiver, filter);
    }
}

You have to register receiver using Application context like below:

context.getApplicationContext().registerReceiver(receiver, filter);

instead of

context.registerReceiver(receiver, filter);

Otherwise you will get following exception:

java.lang.RuntimeException: Unable to start receiver com.ecosmob.contactpro.api.ServiceStarter: android.content.ReceiverCallNotAllowedException: BroadcastReceiver components are not allowed to register to receive intents

I hope it helps others!