README.md

WMS_iOS_GoogleMapSDK

Sample for using WMS sources in Google Maps SDK for iOS. Provide your API key in the WMSController.h

• Google Maps for iOS used : 1.9.2 (Feb 2015)
• used XCode 6.1

youtube video

There are two ways of doing this:

• "Method B": use GMSTileURLConstructor

       // -- method B. WMS tile layer with GMSTileURLConstructor
          GMSTileURLConstructor urls = ^(NSUInteger x, NSUInteger y, NSUInteger z) {
              BBox bbox = bboxFromXYZ(x,y,z);
              NSString *urlKN = [NSString stringWithFormat:@"Your WMS url&BBOX=%f,%f,%f,%f",
                                 bbox.left, bbox.bottom,bbox.right,bbox.top];
              
              return [NSURL URLWithString:urlKN];
          };
  

• "Method A": use custom TileLayer derived from GMSTileLayer

1. your derived class from GMSTileLayer (here WMSTileLayer.h) will receive tile request

      -(void)requestTileForX:(NSUInteger)x   y:(NSUInteger)y    zoom:(NSUInteger)z    receiver:(id<GMSTileReceiver>)receiver
   

2. WMSTileLayer first checks for cached tile and if found calls :

       [self drawTileAtX:x y:y zoom:z Url:urlStr Receiver:receiver] ;
   

3. if tile is not cached we download it, save it to the file system (using MD5 hash) and call to draw it

       [data  writeToFile: filePath  atomically:YES];
       [self drawTileAtX:x y: y zoom: z Url:urlStr Receiver:receiver] ;
   

4. drawTileAtX is very simple:

       -(void) drawTileAtX: (NSUInteger) x   y:(NSUInteger)y    zoom:(NSUInteger)zoom   Url:(NSString*) url Receiver: (id<GMSTileReceiver>) receiver {
            UIImage             *image   = TileLoad(url,NO); // loads tile from file system
            [receiver receiveTileWithX:x y:y zoom:zoom image:image]; // pass it to the SDK API
       }
   

}

both ways are used in this sample.