如何从JSON输出中分离出经度和纬度值? [英] How to seperate Latitude and Longitude Values From the JSON Output?

问题描述

我正在尝试在两个位置之间进行两个绘制路线，为此，我从Google Map API Web Service获取所有点.(JSON输出格式).解析JSON数据和删除点后，我将所有点存储在NSMutableArray上. 每个索引数组都包含这种类型的值.

I am trying two draw route between two location,For that I Fetch all the points from Google Map API Web Service.(JSON Output Format). After parsing JSON Data and De cording points i stored all points on NSMutableArray. Each array of index contains this type of values.

"<+10.90180969, +76.19167328> +/- 0.00m (speed -1.00 mps / course -1.00) @ 12/04/12 10:18:10 AM India Standard Time",

现在，我想分隔纬度和经度值.

Now i want to separate latitude and longitude values.

latitude  : +10.90180969
longitude : +76.19167328

如何从数组的每个索引中获取此值?

How to get this values from each index of array?

推荐答案

这里的内容非常粗略，我认为它是蛮荒的解决方法

Here is something in a very crude form and I guess its a brute solution

NSString* str =     @"<+10.90180969, +76.19167328> +/- 0.00m (speed -1.00 mps  course -1.00) @ 12/04/12 10:18:10 AM India Standard Time";
NSArray* arr = [str componentsSeparatedByCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:@"<>"]];

if ([arr count] > 1) {
   NSString* coordinateStr =  [arr objectAtIndex:1];        
   NSArray* arrCoordinate = [coordinateStr componentsSeparatedByString:@","];        
    NSLog(@"%@",arrCoordinate);
}

查看显示您正在打印CLLocation对象" someObject "的描述的字符串，您还可以访问纬度和经度，例如

Looking at the string it shows that you are printing the description of a CLLocation object "someObject" , You can also access the latitude and longitude such as

   CLLocationCoordinate2D location = [someObject coordinate];
    NSLog(@" \nLatitude: %.6f \nLongitude: %.6f",location.latitude,location.longitude);

输出将为:纬度:28.621873经度:77.388897

OutPut will be : Latitude: 28.621873 Longitude: 77.388897

但这不会给您显示符号，例如"+"或-"

but this won't give you the signs i.e "+" , or "-"

希望有帮助.

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