如何从ios中的dictionay中绘制谷歌地图中的标记？ [英] How to plot the markers in google maps from a dictionay in ios?

问题描述

在我的应用程序中，我完成了JSON解析并获得了字典形式的坐标，我想使用坐标angd在地图中绘制它，

我已经使用这个

p>

  SBJsonParser * jsonParser = [SBJsonParser new]; 
 NSArray * jsonData =（NSArray *）[jsonParser objectWithString：outputData error：nil]; 
 for（int i = 0; i< [jsonData count]; i ++）
 {
 NSDictionary * dict =（NSDictionary *）[jsonData objectAtIndex：i]; 
 Nslog（@％@，dict）; 
 double la = [[dict objectForKey：@latitude] doubleValue]; 
 double lo = [[dict objectForKey：@longitude] doubleValue]; 
 
 CLLocation * loca = [[CLLocation alloc] initWithLatitude：la longitude：lo]; 
 CLLocationCoordinate2D coordi = loca.coordinate; 
 
 marker = [GMSMarker markerWithPosition：coordi]; 
 marker.snippet = @Hello World; 
 marker.animated = YES; 
 marker.map = mapView; 
} 
  

它被打印为

  [{driver_id：[e-mail]，username：sunil，纬度：0.000000000000000，
经度： 0.000000000000000}，
 {driver_id：[e-mail]，username：mari，latitude：13.040720500000000，
longitude：80.243139600000000} ，{driver_id：[e-mail]，username：balaji，latitude：0.000000000000000，
longitude：0.000000000000000} 
  
 
 $ b然后，在我的日志中，它被打印为
  2014-01-04 10：55：48.121 MyTaxi [608：12e03]纬度：0.000000 
 2014-01-04 10：55：48.121 MyTaxi [608：12e03]经度：0.000000 
 2014-01-04 10：55：48.122 MyTaxi [608：12e03]纬度：13.040721 
 2014-01-04 10：55：48.122 MyTaxi [608：12e03]经度：80.243140 
 2014- 01-04 10：55：48.122 MyTaxi [608：12e03]纬度：0.000000 
 2014-01-04 10：55：48.123 MyTaxi [608：12e03]经度：0.000000 
  
 
 
 
但是，这不起作用正常
 任何机构都有一个想法如何将这些点绘制到谷歌地图上
  
 
 
解决方案这个可能有帮助，只需要为你的计数创建一个for循环，然后增加它...... 
  NSDictionary * dict =（NSDictionary *）[jsonData objectAtIndex：i]; 
 double la = [[dict valueForKey：@latitude] doubleValue]; 
 double lo = [[dict valueForKey：@longitude] doubleValue]; 
 
 NSMutableArray * latArray = [[NSMutableArray alloc] init]; 
 NSMutableArray * longArray = [[NSMutableArray alloc] init]; 
 
 [latArray addObject：[NSNumber numberWithDouble：la]]; 
 [longArray addObject：[NSNumber numberWithDouble：lo]]; 
 
 CLLocation * loca = [[CLLocation alloc] initWithLatitude：[[latArray objectAtIndex：i] doubleValue] longitude：[[longArray objectAtIndex：i] doubleValue]]; 
 CLLocationCoordinate2D coordi = loca.coordinate; 
 
 GMSMarker * marker = [[GMSMarker alloc] init]; 
 marker = [GMSMarker markerWithPosition：coordi]; 
 marker.position = CLLocationCoordinate2DMake（[[latArray objectAtIndex：i] doubleValue]，[[longArray objectAtIndex：i] doubleValue]）; 
 marker.snippet = @Hello World; 
 marker.animated = YES; 
 marker.map = mapView; 
  
 
In my app, I have done JSON parsing and I got the coordinates in the form of a dictionary, I want to use the coordinates angd plot it in the map,

I have using this  
SBJsonParser *jsonParser = [SBJsonParser new];    
NSArray *jsonData = (NSArray *) [jsonParser objectWithString:outputData error:nil];
for(int i=0;i<[jsonData count];i++)
{
    NSDictionary *dict=(NSDictionary *)[jsonData objectAtIndex:i];
    Nslog(@"%@",dict);
    double la=[[dict objectForKey:@"latitude"] doubleValue];
    double lo=[[dict objectForKey:@"longitude"] doubleValue];

    CLLocation * loca=[[CLLocation alloc]initWithLatitude:la longitude:lo];
    CLLocationCoordinate2D coordi=loca.coordinate;

    marker=[GMSMarker markerWithPosition:coordi];
    marker.snippet = @"Hello World";
    marker.animated = YES;
    marker.map = mapView;
}  
it is printed as  
[{"driver_id":"[e-mail]","username":"sunil","latitude":"0.000000000000000",  
"longitude":"0.000000000000000"},  
{"driver_id":"[e-mail]","username":"mari","latitude":"13.040720500000000",  
"longitude":"80.243139600000000"},     {"driver_id":"[e-mail]","username":"balaji","latitude":"0.000000000000000",  
"longitude":"0.000000000000000"}
Then, In my log, it is getting printed as  
2014-01-04 10:55:48.121 MyTaxi[608:12e03] latitude : 0.000000
2014-01-04 10:55:48.121 MyTaxi[608:12e03] longitude : 0.000000
2014-01-04 10:55:48.122 MyTaxi[608:12e03] latitude : 13.040721
2014-01-04 10:55:48.122 MyTaxi[608:12e03] longitude : 80.243140
2014-01-04 10:55:48.122 MyTaxi[608:12e03] latitude : 0.000000
2014-01-04 10:55:48.123 MyTaxi[608:12e03] longitude : 0.000000
But, this doesnt works properly  
Does any body have an idea how to plot these points to the google maps

解决方案
try this one this might be helpful just create a for loop to your count ,increment it ...  
NSDictionary *dict=(NSDictionary *)[jsonData objectAtIndex:i];
    double la=[[dict valueForKey:@"latitude"] doubleValue];
    double lo=[[dict valueForKey:@"longitude"] doubleValue];

    NSMutableArray * latArray=[[NSMutableArray alloc]init];
    NSMutableArray * longArray=[[NSMutableArray alloc]init];

    [latArray addObject:[NSNumber numberWithDouble:la]];
    [longArray addObject:[NSNumber numberWithDouble:lo]];

    CLLocation * loca=[[CLLocation alloc]initWithLatitude:[[latArray objectAtIndex:i]doubleValue] longitude:[[longArray objectAtIndex:i]doubleValue]];
    CLLocationCoordinate2D coordi=loca.coordinate;

    GMSMarker *marker= [[GMSMarker alloc] init];
    marker=[GMSMarker markerWithPosition:coordi];
    marker.position = CLLocationCoordinate2DMake([[latArray objectAtIndex:i]doubleValue], [[longArray objectAtIndex:i]doubleValue]);
    marker.snippet = @"Hello World";
    marker.animated = YES;
    marker.map = mapView;


                        
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