OSM MapView類：顯示所有geopoints從屏幕

Question

geotracking我跟着這裏的例子：How to set screen zoom by geopoints?

但我的問題是，我的路線是在MapView的非常小的。它應該在邊界附近結束。

這是它的外觀與下面的代碼：

private void centerMap(ArrayList<GeoPoint> waypoints) { 
    GeoPoint[] geoPoints = new GeoPoint[waypoints.size()]; 
    for(int i = 0; i<waypoints.size(); i++) { 
     geoPoints[i] = waypoints.get(i); 
    } 

    int minLat = Integer.MAX_VALUE; 
    int maxLat = Integer.MIN_VALUE; 
    int minLon = Integer.MAX_VALUE; 
    int maxLon = Integer.MIN_VALUE; 

    //for (Point point : twoPoints) { 
    for(GeoPoint point: geoPoints){ 
     int lat = (int) (point.getLatitude() * 1E6); 
     int lon = (int) (point.getLongitude() * 1E6); 

     maxLat = Math.max(lat, maxLat); 
     minLat = Math.min(lat, minLat); 
     maxLon = Math.max(lon, maxLon); 
     minLon = Math.min(lon, minLon); 
    } 

    mapView.getController().zoomToSpan(Math.abs(maxLat - minLat), Math.abs(maxLon - minLon)); 
    mapView.getController().setCenter(new GeoPoint((maxLat + minLat)/2, (maxLon + minLon)/2)); 
} 

Answer 1

private void centerMap(ArrayList<GeoPoint> waypoints) { 
    BoundingBox bb = BoundingBox.fromGeoPoints(waypoints); 
    mapView.zoomToBoundingBox(bb); 
} 

而且注意，經/緯度值現在是默認osmdroid雙。