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我真的很难弄清楚这一点。我已经阅读了一堆关于此的 PDFS 和 stackoverflow 问题，但我从未使用过 API 并且无法安静地得到它。我正在尝试获取我的经度和纬度坐标并使用那里的任何 API（foursquare、谷歌地图、您可以推荐的任何其他免费的？）来获取附近公园的列表并将其放入 NSMutableDictionary key=name 对象=@“距离”。无需获取其所有内容，只需获取距离和名称即可。但我一直坚持第一部分，获得我的经度和纬度坐标超过 4 小时。谁能告诉我代码明智how I would get my coordinates，无需解释如何解析 API，一旦我有了我的坐标，我觉得我可以弄清楚。我已经下载了苹果的 locateme 源代码，但仍然无法在我的上运行。是否有一组易于遵循的步骤或代码有人可以提供，我可以使用并解决这个问题？我已经导入了位置框架。有没有快速的 10-20 行代码来解决这个问题，而不是 3 个额外的视图控制器，我不太明白。非常感谢

4

2 回答 2

4 
- (void)viewDidLoad
{
    [super viewDidLoad];

    locationManager = [[CLLocationManager alloc] init];
    locationManager.delegate = self;
    locationManager.distanceFilter = kCLDistanceFilterNone; // whenever we move
    locationManager.desiredAccuracy = kCLLocationAccuracyHundredMeters; // 100 m
    [locationManager startUpdatingLocation];    
}

#pragma mark Current location methods
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation{
    latit = newLocation.coordinate.latitude;
    longit = newLocation.coordinate.longitude;
    NSLog(@"latitude = %f",latit);
    NSLog(@"longitude = %f",longit);

    [manager stopUpdatingLocation];
    [self getNearByList];
}

-(void)getNearByList
{    
    NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
    [dateFormat setDateFormat:@"yyyyMMdd"];
    NSString *currentDate = [dateFormat stringFromDate:[NSDate date]];
    [dateFormat release];

    NSURL *url = [NSURL URLWithString:[[NSString stringWithFormat:@"https://api.foursquare.com/v2/venues/search?ll=%f,%f&client_id=YOUR_CLIENT_ID_HERE&client_secret=YOUR_CLIENT_SECRET_HERE&v=%@&limit=100&radius=2000&categoryId=4bf58dd8d48988d1e0931735,4bf58dd8d48988d176941735,4bf58dd8d48988d1ed941735,4bf58dd8d48988d119951735,4bf58dd8d48988d123941735,4d954afda243a5684865b473,4edd64a0c7ddd24ca188df1a,4bf58dd8d48988d1c9941735,4bf58dd8d48988d1bd941735,4bf58dd8d48988d124951735,4bf58dd8d48988d115951735,4bf58dd8d48988d11a951735,4bf58dd8d48988d10c951735,4bf58dd8d48988d11b951735,4bf58dd8d48988d11e951735,4bf58dd8d48988d1f9941735,4bf58dd8d48988d1f5941735,4bf58dd8d48988d113951735,4f04afc02fb6e1c99f3db0bc,4bf58dd8d48988d110951735,4bf58dd8d48988d1f2941735,4bf58dd8d48988d1fd941735,4bf58dd8d48988d103951735,4bf58dd8d48988d104941735,4f04aa0c2fb6e1c99f3db0b8,4d1cf8421a97d635ce361c31,4bf58dd8d48988d1f8941735,4d4b7105d754a06374d81259,4bf58dd8d48988d16d941735,4bf58dd8d48988d128941735,4bf58dd8d48988d111951735,4bf58dd8d48988d1ca941735,4bf58dd8d48988d117951735,4bf58dd8d48988d107951735,4bf58dd8d48988d1fa941735,4bf58dd8d48988d118951735,4bf58dd8d48988d17f941735,4bf58dd8d48988d1ac941735,4bf58dd8d48988d180941735",latit,longit,currentDate] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];  //YOU CAN FOUND MORE CATEGORY ID AT FOURSQURE WEBSITE..
        NSURLRequest *urlRequest = [NSURLRequest requestWithURL:url cachePolicy: NSURLRequestReloadIgnoringCacheData timeoutInterval: 30.f];
    NSLog(@"url = %@",urlRequest);
    webData1 = [[NSMutableData data] retain];
    urlConnection = [[NSURLConnection alloc] initWithRequest: urlRequest delegate: self];
}


-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
        [webData1 setLength: 0];
}
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
        [webData1 appendData:data];
        //NSLog(@"webData1 = %@",webData1);
}
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
        UIAlertView *alert1 = [[UIAlertView alloc] initWithTitle:@"Error"
                                                        message : @"An error has occured."
                                                        delegate:nil
                                              cancelButtonTitle :@"OK"
                                              otherButtonTitles :nil];
        [alert1 show];
        [alert1 release];

        [webData1 release];
    [connection release];
}
-(void)connectionDidFinishLoading:(NSURLConnection *)connection
{
        NSString *data = [[NSString alloc] initWithBytes: [webData1 mutableBytes] length:[webData1 length] encoding:NSUTF8StringEncoding];
        NSLog(@"data = %@",data);

        [connection release];
        [webData1 release];

}
于 2012-04-20T11:19:19.840 回答
1

使用 Google Place Api。您只需要注册，然后您将获得 api 的密钥

//示例 api。此 api 将以 json 数据格式为您提供定义的经度和纬度半径内的食物

https://maps.googleapis.com/maps/api/place/search/json?location=-33.8670522,151.1957362&radius=500&types=food&name=harbour&sensor=false&key=AddYourOwnKeyHere

谷歌地方 API

希望，这会帮助你..享受...

于 2012-04-20T10:56:30.130 回答