註釋未在googlemap上顯示

Question

註解未在地圖上顯示。可能是什麼原因？請help.i不能在地圖上看到的任何引腳或註解，它顯示葡萄牙，西班牙等

addressArray = dictionary[@"data"][@"centers"]; 
NSArray *latitude =[dictionary[@"data"][@"centers"]valueForKey:@"lat"]; 
NSArray *longitude=[dictionary[@"data"][@"centers"]valueForKey:@"lng"]; 
NSString *cname=[dictionary[@"data"][@"centers"]valueForKey:@"category_name"]; 
loaderView.hidden = true; 
NSLog(@"%@",latitude); 
NSLog(@"%@",longitude); 
NSLog(@"%@",cname); 
UIImage *pinImage = [UIImage imageNamed:@"map_gym"]; 
GMSMarker *mark=[[GMSMarker alloc]init]; 
CLLocationCoordinate2D coord = CLLocationCoordinate2DMake([[latitude objectAtIndex:0] doubleValue] ,[[longitude objectAtIndex:0] doubleValue]); 
NSLog(@"%@",[latitude objectAtIndex:0]); 
NSLog(@"%@",[longitude objectAtIndex:0]); 
mark.position =coord; 
mark.title=cname; 
mark.icon=pinImage; 
mark.infoWindowAnchor = CGPointMake(0.5, 0.25); 
mark.groundAnchor = CGPointMake(0.5, 1.0); 
mark.map=_mapView; 

Answer 1

附近區域，我認爲該標記的座標沒有被正確執行。看看Google's Document中的代碼示例。

CLLocationCoordinate2D position = CLLocationCoordinate2DMake(10, 10); 
GMSMarker *marker = [GMSMarker markerWithPosition:position]; 
marker.title = @"Hello World"; 
marker.map = mapView_; 

試着調整你的代碼到這個。

E.g.

CLLocationCoordinate2D coord = CLLocationCoordinate2DMake([[latitude objectAtIndex:0] doubleValue] ,[[longitude objectAtIndex:0] doubleValue]); 
GMSMarker *marker = [GMSMarker markerWithPosition:coord]; 
marker.title = @"Hello World"; 
    marker.map = mapView_;