在iPhone上提取JSON响应的特定部分

发布于 2024-11-04 05:41:50 字数 631 浏览 0 评论 0原文

我正在考虑在我的应用程序中添加一个距离计算器。我一直在查看 Google 的 API，我似乎无法解码 JSON。我已经用 PHP 成功做到了这一点。其代码是：

substr($convertedtoarray['routes']['0']['legs']['0']['distance']['text'], 0, -3);

在 iPhone 上，我设法获取 JSON 响应，但无法获取我想要的特定部分。

Json 地址：http://maps.googleapis.com/maps/api/directions/json?origin=plymouth&destination=pl210bp&sensor=false

NSMutableDictionary *luckyNumbers = [responseString JSONValue];

[responseString release];
if (luckyNumbers != nil) {
    
    NSString *responseStatus = [luckyNumbers objectForKey:@"routes"];'

}

我该去哪里？

任何帮助都会很棒。

原文

I'm looking at adding a distance calculator to my application. I have been looking at Google's API put I can't seem to decode the JSON. I have managed to do so with PHP. The code for that was:

substr($convertedtoarray['routes']['0']['legs']['0']['distance']['text'], 0, -3);

On the iPhone I managed to get the JSON response but can't get the specific part of it that I want.

Json address: http://maps.googleapis.com/maps/api/directions/json?origin=plymouth&destination=pl210bp&sensor=false

NSMutableDictionary *luckyNumbers = [responseString JSONValue];

[responseString release];
if (luckyNumbers != nil) {
    
    NSString *responseStatus = [luckyNumbers objectForKey:@"routes"];'

}

Where would I go from here?

Any help would be great.

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岁吢 2024-11-11 05:41:50

NSString *responseStatus = [[[[[[luckyNumbers objectForKey:@"routes"]objectAtIndex:0] objectForKey:@"legs"]objectAtIndex:0] objectForKey:@"distance"] objectForKey:@"text"];

非常丑陋，你可以像这样提取单独的对象：

    NSArray *routesArray = [luckyNumbers objectForKey:@"routes"];
    NSDictionary *firstRoute = [routesArray objectAtIndex:0];
    NSArray *legsArray = [firstRoute objectForKey:@"legs"];
    NSDictionary *firstLeg = [legsArray objectAtIndex:0];
    NSDictionary *distanceDict = [firstLeg objectForKey:@"distance"];
    NSString *distanceText = [distanceDict objectForKey:@"text"];

祝你好运。

NSString *responseStatus = [[[[[[luckyNumbers objectForKey:@"routes"]objectAtIndex:0] objectForKey:@"legs"]objectAtIndex:0] objectForKey:@"distance"] objectForKey:@"text"];

Very ugly you can extract in separate objects like this:

    NSArray *routesArray = [luckyNumbers objectForKey:@"routes"];
    NSDictionary *firstRoute = [routesArray objectAtIndex:0];
    NSArray *legsArray = [firstRoute objectForKey:@"legs"];
    NSDictionary *firstLeg = [legsArray objectAtIndex:0];
    NSDictionary *distanceDict = [firstLeg objectForKey:@"distance"];
    NSString *distanceText = [distanceDict objectForKey:@"text"];

Good luck.

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