I need to start a service at boot time. I searched a lot. They are talking about Broadcastreceiver. As I am new to android development, I didn't get a clear picture about services on Android. Please provide some source code.
Create a BroadcastReceiver and register it to receive ACTION_BOOT_COMPLETED. You also need RECEIVE_BOOT_COMPLETED permission.
Read: Listening For and Broadcasting Global Messages, and Setting Alarms