Question

How to know if the power is connected or not when my application is starting ?

I know, that I can get power state using broadcast receiver with ACTION_POWER_CONECTED and ACTION_POWER_DISCONNECTED but when my app is starting I do not received these Broadcasts.

Answer 1

You don’t actually have to register a receiver when calling registerReceiver ;-). Run

Intent intent = registerReceiver(null, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));

It will return the last intent that has been broadcasted for the given filter. From ACTION_BATTERY_CHANGED, you can determine whether the phone is on battery or connected to a power source:

bool isOnBattery = intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1) > 0