Detecting programmatically if "Restrict background data" is enabled for Android app

Question

I searched stack overflow and could not find an answer to detect this setting set for my app. In Android Marshmallow there is an option in Settings :

Settings -> Data Usage -> My App -> Toggle for "Restrict app background data" which "disable background data on cellular network"

I want to warn the user if this set in my app. How can I detect if this is set for my app. Any pointers appreciated.

Answer 1

Per the latest android docs starting with Android 7.0 (API level 24)...

https://developer.android.com/training/basics/network-ops/data-saver.html

ConnectivityManager connMgr = (ConnectivityManager)
    getSystemService(Context.CONNECTIVITY_SERVICE);
// Checks if the device is on a metered network
if (connMgr.isActiveNetworkMetered()) {
  // Checks user’s Data Saver settings.
  switch (connMgr.getRestrictBackgroundStatus()) {
    case RESTRICT_BACKGROUND_STATUS_ENABLED:
    // Background data usage is blocked for this app. Wherever possible,
    // the app should also use less data in the foreground.

    case RESTRICT_BACKGROUND_STATUS_WHITELISTED:
    // The app is whitelisted. Wherever possible,
    // the app should use less data in the foreground and background.

    case RESTRICT_BACKGROUND_STATUS_DISABLED:
    // Data Saver is disabled. Since the device is connected to a
    // metered network, the app should use less data wherever possible.
  }
} else {
  // The device is not on a metered network.
  // Use data as required to perform syncs, downloads, and updates.
}

Monitoring Changes to Data Saver Preferences Apps can monitor changes to Data Saver preferences by creating a BroadcastReceiver to listen for ConnectivityManager.ACTION_RESTRICT_BACKGROUND_CHANGED and dynamically registering the receiver with Context.registerReceiver(). When an app receives this broadcast, it should check if the new Data Saver preferences affect its permissions by calling ConnectivityManager.getRestrictBackgroundStatus().

Note: The system only sends this broadcast to apps that dynamically register for them with Context.registerReceiver(). Apps that register to receive this broadcast in their manifest will not receive them.