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Proximity Alert Demo

package app.test; import android.app.Activity; import android.app.PendingIntent; import android.content.Intent; import android.content.IntentFilter; import android.location.LocationManager; import android.net.Uri; import android.os.Bundle; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.location.LocationManager; import android.os.Bundle; import android.util.Log;  class ProximityReceiver extends BroadcastReceiver {   @Override   public void onReceive(Context arg0, Intent intent) {     if(intent.getData() != null)       Log.v(TAG, intent.getData().toString());     Bundle extras = intent.getExtras();     if(extras != null) {       Log.v("", "Message: " + extras.getString("message"));       Log.v("", "Entering? " + extras.getBoolean(LocationManager.KEY_PROXIMITY_ENTERING));     }   } } public class ProximityActivity extends Activity {   private final String PROX_ALERT = "app.test.PROXIMITY_ALERT";   private ProximityReceiver proxReceiver = null;   private LocationManager locMgr = null;   PendingIntent pIntent1 = null;   PendingIntent pIntent2 = null;     @Override     public void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         double lat = 31.334954;             double lon = -80.5625;         float radius = 5.0f * 1609.0f;          String geo = "geo:"+lat+","+lon;         Intent intent = new Intent(PROX_ALERT, Uri.parse(geo));         intent.putExtra("message", "Jacksonville, FL");         pIntent1 = PendingIntent.getBroadcast(getApplicationContext(), 0, intent,             PendingIntent.FLAG_CANCEL_CURRENT);         locMgr = (LocationManager) this.getSystemService(LOCATION_SERVICE);         locMgr.addProximityAlert(lat, lon, radius, 2000L, pIntent1);         lat = 38.54;             lon = -80.38;         geo = "geo:"+lat+","+lon;         intent = new Intent(PROX_ALERT, Uri.parse(geo));         intent.putExtra("message", "Orlando, FL");         pIntent2 = PendingIntent.getBroadcast(getApplicationContext(), 0, intent,             PendingIntent.FLAG_CANCEL_CURRENT);         locMgr.addProximityAlert(lat, lon, radius, 60000L, pIntent2);         proxReceiver = new ProximityReceiver();         IntentFilter iFilter = new IntentFilter(PROX_ALERT);         iFilter.addDataScheme("geo");         registerReceiver(proxReceiver, iFilter);     }          protected void onDestroy() {       super.onDestroy();       unregisterReceiver(proxReceiver);       locMgr.removeProximityAlert(pIntent1);       locMgr.removeProximityAlert(pIntent2);     } } //main.xml <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"     android:orientation="vertical"     android:layout_width="fill_parent"     android:layout_height="fill_parent"     > <TextView       android:layout_width="fill_parent"      android:layout_height="wrap_content"      android:text="@string/hello"     /> </LinearLayout>