java - Error while using "findViewById" for mapview -


I have created a simple map application using the OSM. Everything is working fine, but there is a problem when I'm trying to use findViewById to map to the layout.

I Error : 

  java.lang.RuntimeException: Unable to start activity ComponentInfo {com.example.openstreetmaptutorial / com.example .openstreetmaptutorial.MainActivity}: java.lang.IllegalStateException: The specified child is already the mother or father. You must first call the removeView () on the child's parent   
  Activity code :  
  Public class main activity activity increases (double myCurrentLatitude; double Merilgutantrn: @ override protected void saved create (bundled Instansstet) {Suprknkret (saved Instensstet); receive setContentView (R.layout.activity_main); // current location GPSTracker Tracker = New GPSTracker (this); If (tracker.canGetLocation () == incorrect) {tracker.showSettingsAlert ();} Other {my CurrentLatitude = tracker.getLatitude (); MyCurrentLongitude = tracker.getLongitude ();} MapView mapView = (MapView) findViewById (R.id.mapview); mapView.setClickable (right); mapView.setBuiltInZoomControls (right); mapView.setTileSource ( TileSourceFactory.MAPQUESTOSM); mapView.getController () setZoom (15). MapView.getController (). SetCenter (new GeoPoint (myCurrentLatitude, myCurrentLongitude)); list & lt; overlay & gt; Nkshaovrle = Nkshaviavet. overlay (); drawable Drauble = It. Gareth's Source (). GetDrawable (R.drawable.pin_for_map); Mapimeted overlay item doneOverval = new mapimated overlay (droplet, this); Itemizedoverlay.setEnabled (true); // Set to pin my current status on the map GeoPoint HomePoint = New GeoPoint (myCurrentLatitude, myCurrentLongitude); Overlayist overlayem = new overlayem ("Home Sweet Home", "Name", HomePoint); MapView.getController () setZoom (15) MapView.getController () setCenter (homepoint). Itemizedoverlay.addOverlay (overlayitem); MapOverlays.add (itemizedoverlay); setContentView (MapView); }}   
  layout file :  
  & lt; Relative layout xmlns: android = "http://schemas.android com / apk / res / android" android: layout_width = "match_parent" android: layout_height = "match_parent" & gt; & Lt; org.osmdroid.views.MapView Android: Eddie = "@ + id / Mapviwu" Android: Leaut_vidth = "Mac_perent" Android: Leaut_heit = "Mac_perent" Android-enabled = "true" android: clickable = "true" / & Gt; & Lt; / RelativeLayout & gt; The line that generates the error is:  
  Map Map Map = (MapView) SearchVBIID (RIDMapView);   
 If I change this line:  
  Mapview map view = new map view (this, 256);   
 Error. But I need to apply the first one, because I want to add some more control to layout through XML. What should I do to overcome the problem? Can I use  findViewById  without a specific error?   
 
 
 The problem is happening when you  mapView   
 Passing the  setContentView (mapView) call for the second time the  setContentView ()  method;   
  mapView  belongs to its parent  relative layout . Therefore, you are trying to ignore this  mapView  to your parent  relative layout , then you are receiving  IllegalStateException . ..  
  java.lang.RuntimeException: Unable to start activity ComponentInfo {com.example.openstreetmaptutorial / com.example.openstreetmaptutorial.MainActivity}: java.lang.IllegalStateException: Specified child's Already have a parent. You must first call the removeView () on the child's parent   
 You can solve the problem by removing the second  setContentView ()  method call.

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