StackOverflow2013

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PO
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Id
17533439
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0
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0
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CreationDate
2013-07-08T18:23:07.003
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2013-07-13T18:52:32.700
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2013-07-13T18:52:32.700
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281545
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3888775
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text
Body
<pre><code>class Signal { static volatile CountDownLatch latch; static int asu; private final static String TAG = Signal.class.getName(); int getSignalStrength(Context ctx) throws InterruptedException { Intent i = new Intent(TAG + ".SIGNAL_ACTION", Uri.EMPTY, ctx, SignalListenerService.class); latch = new CountDownLatch(1); asu = -1; ctx.startService(i); Log.w(TAG, "I wait"); latch.await(); ctx.stopService(i); return asu; } } </code></pre> <p>where :</p> <pre><code>public class SignalListenerService extends Service { private TelephonyManager Tel; private SignalListener listener; private final static String TAG = SignalListenerService.class.getName(); private static class SignalListener extends PhoneStateListener { private volatile CountDownLatch latch; private SignalListener(CountDownLatch la) { Log.w(this.getClass().getCanonicalName(), "CSTOR"); this.latch = la; } @Override public void onSignalStrengthChanged(int asu) { Signal.asu = asu; latch.countDown(); } } @Override public int onStartCommand(Intent intent, int flags, int startId) { Log.w(TAG, "Received : " + intent.getAction()); Tel = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE); listener = new SignalListener(Signal.latch); @SuppressWarnings("deprecation") final int listenSs = PhoneStateListener.LISTEN_SIGNAL_STRENGTH; Tel.listen(listener, listenSs); return START_STICKY; } @Override public void onDestroy() { Log.w(TAG, "onDestroy"); Tel.listen(listener, PhoneStateListener.LISTEN_NONE); super.onDestroy(); } @Override public IBinder onBind(Intent intent) { return null; } } </code></pre> <p>This is working code. Do not forget to register your services in the manifest and acquire permissions. There may be better/ more elegant ways of doing this so comments/corrections welcome. </p>
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1. This table or related slice is empty.
PostParentId
1. POInstant signal strength
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  PTQuestion
PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. USMr_and_Mrs_D
UserOwnerUserId
1. USMr_and_Mrs_D
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