我正在尝试从我们的 WMS 服务器显示 WMS 磁贴。我用旧的实现了这一点,MKOverlay
但我现在正在尝试更新它以使用MKTileOverlay
但我无法让瓷砖显示。这是我的课:
@interface WMSTileOverlay ()
@property (strong, nonatomic) NSString *API, *mapContext, *IDToken;
@end
@implementation WMSTileOverlay
-(instancetype)initWithAPI:(NSString *)API IDToken:(NSString *)IDToken andMapContext:(NSString *)mapContext {
self = [super init];
if (self) {
self.API = API;
self.mapContext = mapContext;
self.IDToken = IDToken;
}
return self;
}
-(NSURL *)URLForTilePath:(MKTileOverlayPath)path {
DLog(@"fired");
DLog(@"path | x:%ld y: %ld z: %ld scale: %f", (long)path.x, (long)path.y, (long)path.z, path.contentScaleFactor);
NSString *resolvedURL = [self createWMSURLStringForTileX:path.x tileY:path.y zoomLevel:path.z];
DLog(@"resolvedURL: %@", resolvedURL);
return [NSURL URLWithString:resolvedURL];
}
-(NSString *)createWMSURLStringForTileX:(NSInteger)tileX tileY:(NSInteger)tileY zoomLevel:(NSInteger)zoomLevel {
NSString *WMSservice = @"wms";
NSString *WMSversion = @"1.1.1";
NSString *WMSrequest = @"GetMap";
NSString *WMSMode = @"tiled";
NSString *WMSTile = [NSString stringWithFormat:@"%d+%d+%d", tileX, tileY, zoomLevel];
NSString *WMSFormat = @"image/png";
NSString *WMSTransparancy = @"true";
NSString *WMSSRS = @"EPSG:4326";
NSString *WMSLayer = @"displayimg";
DLog(@"%@", [NSString stringWithFormat:@"%@?map=%@&idtoken=%@&service=%@&version=%@&request=%@&SRS=%@&layers=%@&mode=%@&tile=%@&format=%@&transparent=%@", self.API, self.mapContext, self.IDToken, WMSservice, WMSversion, WMSrequest, WMSSRS, WMSLayer, WMSMode, WMSTile, WMSFormat, WMSTransparancy]);
return [NSString stringWithFormat:@"%@?map=%@&idtoken=%@&service=%@&version=%@&request=%@&SRS=%@&layers=%@&mode=%@&tile=%@&format=%@&transparent=%@", self.API, self.mapContext, self.IDToken, WMSservice, WMSversion, WMSrequest, WMSSRS, WMSLayer, WMSMode, WMSTile, WMSFormat, WMSTransparancy];
}
-(void)loadTileAtPath:(MKTileOverlayPath)path result:(void (^)(NSData *, NSError *))result {
DLog(@"fired");
NSURLRequest *request = [NSURLRequest requestWithURL:[self URLForTilePath:path]];
[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {
if (connectionError) {
result (nil, connectionError);
}
else {
result (data, nil);
}
}];
}
@end
我正在为磁贴请求生成 URL:
DEBUG | -[WMSTileOverlay URLForTilePath:] | path | x:60597 y: 92299 z: 18 scale: 1.000000
DEBUG | -[WMSTileOverlay createWMSURLStringForTileX:tileY:zoomLevel:] | https://WMS_SERVER?map=yupv9bvejd15fbmc0i1k62bvmdsbcafn.map&idtoken=852a468e65e5ed4023e7b704ea8c768f53c2df13da44e2f0c68fb5a559a130c8&service=wms&version=1.1.1&request=GetMap&SRS=EPSG:4326&layers=displayimg&mode=tiled&tile=60597+92299+18&format=image/png&transparent=true
我正在取回数据(它与我对MKOverlay
有效的旧类进行的 URL 调用相同)并且该类正在传回数据。但是没有绘制瓷砖。我这样创建类:
WMSTileOverlay *wmsTileOverlay = [[WMSTileOverlay alloc] initWithAPI:functionCall.API IDToken:functionCall.IDToken andMapContext:[self.mapper fetchMapContextForState:self.activeBoundarier.state]];
wmsTileOverlay.canReplaceMapContent = FALSE;
[self.mapView insertOverlay:wmsTileOverlay atIndex:0];
并实现了方法mapView:rendererForOverlay:
:
-(MKOverlayRenderer *)mapView:(MKMapView *)mapView rendererForOverlay:(id<MKOverlay>)overlay {
DLog(@"fired");
if ([overlay isKindOfClass:[MKTileOverlay class]]) {
MKTileOverlay *tileOverlay = (MKTileOverlay *)overlay;
if ([tileOverlay isKindOfClass:[WMSTileOverlay class]]) {
WMSTileOverlay *wmsTileOverlay = (WMSTileOverlay *)tileOverlay;
DLog(@"wmsTileOverlay.URLTemplate: %@", wmsTileOverlay.URLTemplate);
MKTileOverlayRenderer *renderer = [[MKTileOverlayRenderer alloc] initWithTileOverlay:tileOverlay];
return renderer;
}
}
return nil;
}
我究竟做错了什么?