fixed crash by making map static

src/de/tudarmstadt/informatik/hostage/ui2/fragment/ThreatMapFragment.java

@@ -45,7 +45,7 @@ public class ThreatMapFragment extends Fragment implements GoogleMap.OnInfoWindo
 	private static GoogleMap sMap = null;
 	private static View sView = null;
 
-	private HashMap<String, String> mMarkerIDToSSID = new HashMap<String, String>();
+	private HashMap<String, String> sMarkerIDToSSID = new HashMap<String, String>();
 
 	private LocationClient mLocationClient;
 	private static final LocationRequest REQUEST = LocationRequest.create()
@@ -79,8 +79,8 @@ public class ThreatMapFragment extends Fragment implements GoogleMap.OnInfoWindo
 		MainActivity.getInstance().displayView(MainActivity.MainMenuItem.RECORDS.getValue());
 		RecordOverviewFragment recordOverviewFragment = (RecordOverviewFragment)MainActivity.getInstance().getCurrentFragment();
 		if (recordOverviewFragment != null) {
-			String ssid = mMarkerIDToSSID.get(marker.getId());
-			recordOverviewFragment.showDetailsForSSID(ssid);
+			String ssid = sMarkerIDToSSID.get(marker.getId());
+			recordOverviewFragment.showDetailsForSSID(getActivity().getBaseContext(), ssid);
 		}
 	}
 
@@ -222,12 +222,11 @@ public class ThreatMapFragment extends Fragment implements GoogleMap.OnInfoWindo
 								: " attacks")).position(
 								center));
 
-				mMarkerIDToSSID.put(marker.getId(), ssid);
+				sMarkerIDToSSID.put(marker.getId(), ssid);
 			}
 		}
 
 		sMap.setMyLocationEnabled(true);
-		sMap.setOnInfoWindowClickListener(this);
 
 		LatLng tudarmstadt = new LatLng(49.86923, 8.6632768); // default location
 		sMap.moveCamera(CameraUpdateFactory.newLatLngZoom(tudarmstadt, 13));
@@ -266,6 +265,9 @@ public class ThreatMapFragment extends Fragment implements GoogleMap.OnInfoWindo
         	// map already exists
 			//e.printStackTrace();
 		}
+		if (sMap != null) {
+			sMap.setOnInfoWindowClickListener(this);
+		}
 
 		return sView;
 	}