Ios 如何从iphone中的谷歌地图解析谷歌方向api数据？

我使用代码从google direction api解析坐标和多段线：

-(void)routeParser:(NSString *)sourceAddress andDestination:(NSString *)destinationAddress{
    NSLog(@"des sour %@",sourceAddress);
    NSError *error = nil;

    NSString* apiUrlStr = [NSString stringWithFormat:@"http://maps.googleapis.com/maps/api/directions/json?origin=%@&destination=%@&sensor=false", sourceAddress, destinationAddress];
    //&alternatives=true
    NSURL* apiUrl = [NSURL URLWithString:apiUrlStr];
    NSString *apiResponse = [NSString stringWithContentsOfURL:apiUrl encoding:NSASCIIStringEncoding error:&error];
    NSLog(@"apiResponse %@",apiResponse);
    SBJsonParser *jsonParser = [SBJsonParser new];
    NSDictionary *jsonData = (NSDictionary *) [jsonParser objectWithString:apiResponse];
    NSLog(@"apiResponse is : %@",[jsonData objectForKey:@"routes"]);
    NSArray *routeArray = [[NSArray alloc]init];
    routeArray= [jsonData objectForKey:@"routes"];

    for(int i=0;i<[routeArray count];i++)
    {
        NSDictionary *tempDictionary = [routeArray objectAtIndex:i];
        if([tempDictionary objectForKey:@"overview_polyline"]!=nil)
        {
            NSDictionary *secTempDictionary = [tempDictionary objectForKey:@"overview_polyline"];
            if([secTempDictionary objectForKey:@"points"]!=nil)
            {
                NSString * routePoint =[secTempDictionary objectForKey:@"points"];

                [routeSetAry addObject:routePoint];

                encodedPoints = [secTempDictionary objectForKey:@"points"];
            }
            // NSLog(@"secTempDictionary is: %@", secTempDictionary);
        }
        if([tempDictionary objectForKey:@"legs"]!=nil)
        {
            NSArray *lagArray = [[NSArray alloc]init];
            lagArray= [tempDictionary objectForKey:@"legs"];

            for(int i=0;i<[lagArray count];i++)
            {
                NSDictionary *thirdTempDictionary = [lagArray objectAtIndex:i];
                if([thirdTempDictionary objectForKey:@"steps"]!=nil)
                {
                    NSArray *stepsArray = [[NSArray alloc]init];
                    stepsArray= [thirdTempDictionary objectForKey:@"steps"];

                    for(int i=0;i<[stepsArray count];i++)
                    {
                        NSDictionary *forthTempDictionary = [stepsArray objectAtIndex:i];

                        if([forthTempDictionary objectForKey:@"html_instructions"]!=nil)
                        {
                            NSString * directionStr =[forthTempDictionary objectForKey:@"html_instructions"];

                            NSRange range;
                            while ((range = [directionStr rangeOfString:@"<[^>]+>" options:NSRegularExpressionSearch]).location != NSNotFound){
                                directionStr=[directionStr stringByReplacingCharactersInRange:range withString:@""];
                            }
                            [directionStrAry addObject:directionStr];
                        }

                        NSDictionary *fifthTempDictionary = [forthTempDictionary objectForKey:@"polyline"];
                        if([fifthTempDictionary objectForKey:@"points"]!=nil)
                        {
                            NSString * routePoint =[fifthTempDictionary objectForKey:@"points"];

                            [polylineSetAry addObject:routePoint];

                            // encodedPoints = [fifthTempDictionary objectForKey:@"points"];
                        }
                        NSDictionary *sixthTempDictionary =[forthTempDictionary objectForKey:@"distance"];
                        if([sixthTempDictionary objectForKey:@"text"]!=nil)
                        {
                            NSString * distanceStr =[sixthTempDictionary objectForKey:@"text"];

                            [distanceStrAry addObject:distanceStr];

                            // encodedPoints = [fifthTempDictionary objectForKey:@"points"];
                        } 
                    }
                }
            }
        }  
    }

    NSLog(@"routeSetAry is :%@",routeSetAry);
    NSLog(@"polylineSetAry is : %i",polylineSetAry.count);

}

-（void）routeParser:（NSString*）源地址和目标地址：（NSString*）目标地址{
NSLog（@“des sour%@”，源地址）；
n错误*错误=nil；
NSString*APIRLSTR=[NSString stringWithFormat:@]http://maps.googleapis.com/maps/api/directions/json?origin=%@&目的地=%@&传感器=false“，源地址，目的地地址]；
//&备选方案=正确
NSURL*APIRL=[NSURL URLWithString:APIRLSTR]；
NSString*apiResponse=[NSString stringWithContentsOfURL:APIRL编码：NSASCIIStringEncoding错误：&错误]；
NSLog（@“apiResponse%@”，apiResponse）；
SBJsonParser*jsonParser=[SBJsonParser new]；
NSDictionary*jsonData=（NSDictionary*）[jsonParser objectWithString:apiResponse]；
NSLog（@“apiResponse is:%@，[jsonData objectForKey:@“routes]”）；
NSArray*routeArray=[[NSArray alloc]init]；
routeArray=[jsonData objectForKey:@“routes”]；
对于（int i=0；iGoogle拒绝通过客户端脚本进行访问。您需要处理服务器端以下载json数据并将json结果传递给客户端

更新：

字符串Origin=“印度泰米尔纳德邦钦奈”；
字符串Destination=“印度卡纳塔克邦班加罗尔”

var geojsonurl=”http://maps.googleapis.com/maps/api/directions/json?origin=“+Origin+”&destination=“+destination+”&sensor=true”；
WebClient c=新的WebClient（）；
var json=c.DownloadString（geojsonurl）；
GoogleMapsRoutes data=JsonConvert.DeserializeObject（json）；
StringBuilder Originstrlatlng=新StringBuilder（）；
StringBuilder deststrlatng=新StringBuilder（）；
如果（！（数据==null））
{
foreach（数据中的变量项。路由[0]。支腿[0]。步骤）
{
Originstrlatlng.Append（item.start_location.lat.ToString（）+”，“+item.start_location.lng.ToString（）+”）；
deststrlatng.Append（item.end_location.lat.ToString（）+”，“+item.end_location.lng.ToString（）+”；
}
}
公共类GoogleMapsRoutes
{
公共列表路由{get；set；}
公共字符串状态{get；set；}
}
公共课东北
{
公共双lat{get；set；}
公共双精度{get；set；}
}
西南公务舱
{
公共双lat{get；set；}
公共双精度{get；set；}
}
公共类界限
{
公共东北{get；set；}
公共西南西南{get；set；}
}
公共类距离
{
公共字符串文本{get；set；}
公共int值{get；set；}
}
公共课时长
{
公共字符串文本{get；set；}
公共int值{get；set；}
}
公共类结束位置
{
公共双lat{get；set；}
公共双精度{get；set；}
}
公开课
{
公共双lat{get；set；}
公共双精度{get；set；}
}
公共类距离2
{
公共字符串文本{get；set；}
公共int值{get；set；}
}
公共课持续时间2
{
公共字符串文本{get；set；}
公共int值{get；set；}
}
公共类结束位置2
{
公共双lat{get；set；}
公共双精度{get；set；}
}
公共类多段线
{
公共字符串点{get；set；}
}
公务舱2
{
公共双lat{get；set；}
公共双精度{get；set；}
}
公共类步骤
{
公共距离2距离{get；set；}
公共持续时间2持续时间{get；set；}
public EndLocation2 end_位置{get；set；}
公共字符串html_指令{get；set；}
公共多段线多段线{get；set；}
公共位置2开始位置{get；set；}
公共字符串移动模式{get；set；}
公共字符串{get；set；}
}
公务舱航段
{
公共距离距离{get；set；}
公共持续时间{get；set；}
公共字符串结束地址{get；set；}
公共结束位置结束位置{get；set；}
公共字符串起始地址{get；set；}
公共位置开始位置{get；set；}
公共列表步骤{get；set；}
通过_航路点{get；set；}的公共列表
}
公共类概览多段线
{
公共字符串点{get；set；}
}
公务舱路线
{
公共边界{get；set；}
公共字符串版权{get；set；}
公共列表{get；set；}
公共概览多段线概述\u多段线{get；set；}
公共字符串摘要{get；set；}
公共列表警告{get；set；}
公共列表航路点\u顺序{get；set；}
}

这很有效。只要试试。
-（无效）getRoute
- (void) getRoute
{
     polyline.map = nil;
     [googleMapView clear];
     NSString *strUrl = [NSString   stringWithFormat:@"https://maps.googleapis.com/maps/api/directions/json?&alternatives=true&origin=%@&destination=%@&key=%@&sensor=false",self.sourceText.text,self.destnText.text,googleAPI_Key];

     [self routeDataUrl1:strUrl];
     [self.view addSubview:self.getInfo];
     [self.view addSubview:customIndicatorView]; 
}

-(void) connectionDidFinishLoading:(NSURLConnection *)connection
{
     if (webData) //webData is object of NSData
     {
         [self gettingData:webData ]; //calling the method gettingData
     }

     [UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
     webData=nil;
}

//after that gettingData method

- (void) gettingData:(NSData *)data
{

    NSDictionary *allDataDictionary = [NSJSONSerialization 
                                  JSONObjectWithData:data options:0 
                                  error:nil];

    if ([[NSString stringWithFormat:@"%@",[allDataDictionary objectForKey 
    : @"status"]] isEqualToString: @"OK"]) 

    {

        collectionArray =[[NSMutableArray alloc]init];
        NSMutableArray *legsArray = [[NSMutableArray alloc] initWithArray:allDataDictionary[@"routes"]];


        for (int i=0; i< [legsArray count]; i++)
        {

            [collectionArray addObject:[NSDictionary dictionaryWithObjectsAndKeys:legsArray[i][@"legs"][0][@"distance"][@"text"],@"Distance", legsArray[i][@"legs"][0][@"duration"][@"text"],@"Duration",legsArray [i][@"summary"],@"Address",legsArray[i][@"legs"][0][@"summary"][@"html_instructions"][@"text"],@"HtmlInstructions",legsArray[i][@"overview_polyline"][@"points"],@"OverviewPolyline", nil]];
            [polyLineArray addObject:legsArray[i][@"legs"][0][@"steps"]];
            NSLog(@"11 == %@",legsArray[i][@"legs"][0][@"steps"]);         
        }    
        [self.getInfo reloadData];  //where getInfo is the TableView
    }
    else
    {
        NSString *msg=[allDataDictionary objectForKey:@"error_message"];
        UIAlertView *alert=[[UIAlertView alloc]initWithTitle:@"Error !" message:msg delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];

        [alert show];
    }
}

{
polyline.map=nil；
[谷歌地图视图清除]；
NSString*strUrl=[NSString stringWithFormat:@]https://maps.googleapis.com/maps/api/directions/json?&alternatives=true&origin=%@&destination=%@&key=%@&sensor=false”，self.sourceText.text，self.destnext.text，googleAPI_key]；
[自路由TAURL1:strUrl]；
[self.view addSubview:self.getInfo]；
[self.view addSubview:customIndicatorView]；
}
-（无效）连接IDFinishLoading:（NSURLConnection*）连接
{
if（webData）//webData是NSData的对象
{
[self-gettingData:webData]；//调用方法gettingData
}
[UIApplication sharedApplication].networkActivityIndicatorVisible=否；
webData=nil；
}
//之后，使用gettingData方法
-（void）获取数据：（NSData*）数据
{
NSDictionary*allDataDictionary=[NSJSONSerialization
JSONObjectWithData:数据选项：0
错误：无]；
如果（[[NSString stringWithFormat:@“%@”，[allDataDictionary objectForKey
：@“状态”]]isEqualToString:@“确定”]）
{
collectionArray=[[NSMutableArray alloc]init]；
NSMutableArray*legsArray=[[NSMutableArray alloc]initWithArray:allDataDictionary[@“routes”]]；
对于（int i=0；i<[legsArray计数]；i++）
- (void) getRoute
{
     polyline.map = nil;
     [googleMapView clear];
     NSString *strUrl = [NSString   stringWithFormat:@"https://maps.googleapis.com/maps/api/directions/json?&alternatives=true&origin=%@&destination=%@&key=%@&sensor=false",self.sourceText.text,self.destnText.text,googleAPI_Key];

     [self routeDataUrl1:strUrl];
     [self.view addSubview:self.getInfo];
     [self.view addSubview:customIndicatorView]; 
}

-(void) connectionDidFinishLoading:(NSURLConnection *)connection
{
     if (webData) //webData is object of NSData
     {
         [self gettingData:webData ]; //calling the method gettingData
     }

     [UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
     webData=nil;
}

//after that gettingData method

- (void) gettingData:(NSData *)data
{

    NSDictionary *allDataDictionary = [NSJSONSerialization 
                                  JSONObjectWithData:data options:0 
                                  error:nil];

    if ([[NSString stringWithFormat:@"%@",[allDataDictionary objectForKey 
    : @"status"]] isEqualToString: @"OK"]) 

    {

        collectionArray =[[NSMutableArray alloc]init];
        NSMutableArray *legsArray = [[NSMutableArray alloc] initWithArray:allDataDictionary[@"routes"]];


        for (int i=0; i< [legsArray count]; i++)
        {

            [collectionArray addObject:[NSDictionary dictionaryWithObjectsAndKeys:legsArray[i][@"legs"][0][@"distance"][@"text"],@"Distance", legsArray[i][@"legs"][0][@"duration"][@"text"],@"Duration",legsArray [i][@"summary"],@"Address",legsArray[i][@"legs"][0][@"summary"][@"html_instructions"][@"text"],@"HtmlInstructions",legsArray[i][@"overview_polyline"][@"points"],@"OverviewPolyline", nil]];
            [polyLineArray addObject:legsArray[i][@"legs"][0][@"steps"]];
            NSLog(@"11 == %@",legsArray[i][@"legs"][0][@"steps"]);         
        }    
        [self.getInfo reloadData];  //where getInfo is the TableView
    }
    else
    {
        NSString *msg=[allDataDictionary objectForKey:@"error_message"];
        UIAlertView *alert=[[UIAlertView alloc]initWithTitle:@"Error !" message:msg delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];

        [alert show];
    }
}