GoogleMaps SDK for iOS中的fitBounds不適合

我想在GoogleMaps for ios SDK中使用fitBounds方法，並且視圖不適合。我的可變參數都是正確的（路徑，數組等），因爲我可以在地圖上看到帶有標記的折線。唯一不起作用的是適合查看。我犯了什麼錯誤？謝謝。GoogleMaps SDK for iOS中的fitBounds不適合

// Create a 'normal' polyline. 
GMSPolyline *polyline = [[GMSPolyline alloc] init]; 
GMSMutablePath *path = [GMSMutablePath path]; 

locationInfoArray = [LocationInfoMemoryManager loadLocationDataWithPath:_locationInfoPathString]; 

for (int i=0; i<locationInfoArray.count; i++) { 
    LocationInfo* locationInfo = locationInfoArray[i]; 
    CLLocationCoordinate2D locationPoint = {locationInfo.latitude, locationInfo.longitude}; 
    [path addCoordinate:locationPoint]; 
} 


GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:[locationInfoArray[0] latitude] 
                 longitude:[locationInfoArray[0] longitude] 
                  zoom:5 ]; 


mapView = [GMSMapView mapWithFrame:CGRectZero camera:camera]; 

polyline.path = path; 
polyline.strokeColor = [UIColor blueColor]; 
polyline.strokeWidth = 10.f; 
polyline.zIndex = 15; // above the larger geodesic line 
polyline.map = mapView; 

GMSMarker *startMarker = [[GMSMarker alloc] init]; 
startMarker.title = @"Start"; 
startMarker.snippet = @"Info will be here"; 
startMarker.position = CLLocationCoordinate2DMake([[locationInfoArray firstObject] latitude], [[locationInfoArray firstObject] longitude]); 
startMarker.map = mapView; 
startMarker.flat = NO; 
//sydneyMarker.rotation = 30.0; 
mapView.selectedMarker = startMarker; 

GMSMarker *finishMarker = [[GMSMarker alloc] init]; 
finishMarker.title = @"Finish"; 
finishMarker.snippet = @"Info will be here"; 
finishMarker.position = CLLocationCoordinate2DMake([[locationInfoArray lastObject] latitude], [[locationInfoArray lastObject] longitude]); 
finishMarker.map = mapView; 
finishMarker.flat = NO; 
mapView.selectedMarker = finishMarker; 

//Here is probably problem 

GMSCoordinateBounds *bounds; = [[GMSCoordinateBounds alloc] initWithPath:path]; 
GMSCameraUpdate *update = [GMSCameraUpdate fitBounds:bounds withPadding:20]; 
[mapView moveCamera:update]; 

self.view = mapView;

來源

2013-12-14 martin