Create an automatic launch-able Broadcast Receiver in Android

Question

Problem:

I am willing to create an application that simply starts as a background process and whenever a new message comes into the device it should log

Answer 1

Your Code look like this in manifest file

    <receiver android:name=".SMSHandler"
        android:exported="true"
        android:enabled="true">
        <intent-filter>
            <action android:name="android.provider.Telephony.SMS_RECEIVED"/>
        </intent-filter>
    </receiver>

Add the following to your<receiver> in the manifest:

android:enabled="true" android:exported="true">

Furthermore, according to this thread, it seems that you have to manually start one of your activities before the broadcast receiver will start working, i.e. the application has to have been launched at least once before any broadcast receiver will work.

Answer 2

You need to add an activity, then run that activity, before this BroadcastReceiver will work.

More accurately, something needs to use an explicit Intent before your app will be moved out of the stopped state and allow manifest-registered BroadcastReceivers to work. The simplest way to do that is to have a launcher activity, and run that activity from the launcher.

To learn more, see "Launch controls on stopped applications" in the Android 3.1 release notes, along with this blog post.