Android Programming Tutorials

Android Would Like Your Attention

new Thread(threadBody).start();

registerReceiver(onBatteryChanged,

new IntentFilter(Intent.ACTION_BATTERY_CHANGED));

}

We set the receiver's IntentFilter to watch for ACTION_BATTERY_CHANGED

events, routing them to an onBatteryChanged object.

You will need to add an import for android.content.IntentFilter.

Next, call unregisterReceiver() in onDestroy() in PostMonitor:

@Override

public void onDestroy() {

super.onDestroy();

unregisterReceiver(onBatteryChanged);

active.set(false);

}

If we do not do this, our service will keep running and getting battery

events even after it would ordinarily have shut down.

Both of these rely on an onBatteryChanged BroadcastReceiver

implementation, which you should add to PostMonitor:

BroadcastReceiver onBatteryChanged=new BroadcastReceiver() {

public void onReceive(Context context, Intent intent) {

int pct= 100

*intent.getIntExtra(BatteryManager.EXTRA_LEVEL, 1 )

/intent.getIntExtra(BatteryManager.EXTRA_SCALE, 1 );

isBatteryLow.set(pct<= 25 );

}

};

All we do is examine the battery level (as measured on the battery level

scale) and, if it hits 25% or lower, we set an isBatteryLow object to true;

otherwise, we set it to false.

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