Grokking Android

Getting Down to the Nitty Gritty of Android Development

Posts tagged “onReceive()”:

Android Tutorial: BroadcastReceiver


Whenever you want to know about system wide events you need to implement and register a BroadcastReceiver. From then on your receiver gets notifications whenever the system event, for which it is registered, occurs. BroadcastReceivers are one of Android’s four standard components. What are BroadcastReceivers good for? The fact that Android informs you about system […]  Continue Reading  “Android Tutorial: BroadcastReceiver”

Android: Getting Notified of Connectivity Changes


In a previous posting I have explained how you can check the device’s current connectivity status. But this is only a temporary snapshot of the status. It might change anytime – and it probably will, given the volatility of a mobile environment. Thus you want to know whenever the connectivity state changes. Thankfully Android’s ConnectivityManager […]  Continue Reading  “Android: Getting Notified of Connectivity Changes”