BroadcastReceiver when wifi or 3g network state changed

by

You need 

<intent-filter>
<action android:name="android.net.wifi.WIFI_STATE_CHANGED"/>
<action android:name="android.net.wifi.STATE_CHANGE"/>
</intent-filter>

In your receiver tag.

Or if you want more control over it, before registering BroadcastReceiver set these up: 

final IntentFilter filters = new IntentFilter();
filters.addAction("android.net.wifi.WIFI_STATE_CHANGED");
filters.addAction("android.net.wifi.STATE_CHANGE");
super.registerReceiver(yourReceiver, filters);

WIFI_STATE_CHANGED

Broadcast <intent-action> indicating that Wi-Fi has been enabled, disabled, enabling, disabling, or unknown. One extra provides this state as an int. Another extra provides the previous state, if available.

STATE_CHANGE

Broadcast <intent-action> indicating that the state of Wi-Fi connectivity has changed. One extra provides the new state in the form of a NetworkInfo object. If the new state is CONNECTED, additional extras may provide the BSSID and WifiInfo of the access point. as a String

Also, you’ll need to specify the right permissions inside manifest tag:

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

To check connectivity, you can use ConnectivityManager as it tells you what type of connection is available. 

ConnectivityManager conMngr = (ConnectivityManager)this.getSystemService(this.CONNECTIVITY_SERVICE);
android.net.NetworkInfo wifi = conMngr.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
android.net.NetworkInfo mobile = conMngr.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);

More Related Contents:

  1. Example: Communication between Activity and Service using Messaging
  2. Determining the current foreground application from a background task or service
  3. Start Activity from Service in Android
  4. How to have Android Service communicate with Activity
  5. Android Fatal signal 11 (SIGSEGV) at 0x636f7d89 (code=1). How can it be tracked down?
  6. getApplication() vs. getApplicationContext()
  7. Background service with location listener in android
  8. How to get the current location latitude and longitude in android
  9. How to start Service using Alarm Manager in Android?
  10. How to startForeground() without showing notification?
  11. How to execute Async task repeatedly after fixed time intervals
  12. Difference between Service, Async Task & Thread?
  13. Android. Is WorkManager running when app is closed?
  14. How can we prevent a Service from being killed by OS?
  15. Launch Android application without main Activity and start Service on launching application
  16. Is an android service guaranteed to call onDestroy()?
  17. Android onCreate or onStartCommand for starting service
  18. The process of the service is killed after the application is removed from the application tray
  19. How to monitor SIM state change
  20. Is there any way to run service continuously?
  21. What is the difference between an IntentService and a Service? [duplicate]
  22. Cannot keep android service alive after app is closed
  23. How to run CountDownTimer in a Service in Android?
  24. How to restart service after the app is killed from recent tasks
  25. Can anybody explain what is difference between unbound and bound service in android
  26. Observe LiveData from foreground service
  27. Android: How can i show a toast from a thread running in a remote service?
  28. Register GCM from a library project
  29. Android application as a service without activity
  30. NotificationListenerService Implementation

Leave a Comment