我已经在iOS项目中创建了一个简单的代码段。但是我不知道如何处理JSON数据,因此可以在我的应用程序中预览它。我有两个问题。
我的密码
var url : String = "http://demo.revivalx.com/todolist-api/get_all_tasks.php"
var request : NSMutableURLRequest = NSMutableURLRequest()
request.URL = NSURL(string: url)
request.HTTPMethod = "GET"
NSURLConnection.sendAsynchronousRequest(request, queue: NSOperationQueue(), completionHandler:{ (response:NSURLResponse!, data: NSData!, error: NSError!) -> Void in
var error: AutoreleasingUnsafeMutablePointer<NSError?> = nil
let jsonResult: NSDictionary! = NSJSONSerialization.JSONObjectWithData(data, options:NSJSONReadingOptions.MutableContainers, error: error) as? NSDictionary
if (jsonResult != nil) {
//handling JSON data here
let tasks = jsonResult["tasks"] as? NSArray
let task = tasks[0] as? NSDictionary
let taskName = task["name"] as? NSString
} else {
// couldn't load JSON, look at error
}
})
我的回复
{
"tasks": [{
"taskId": "27",
"name": "testy",
"description": "ggg",
"dateCreated": "2014-12-03 17:01:00",
"dateUpdated": "2014-12-03 17:01:00"
}, {
"taskId": "28",
"name": "asd",
"description": "asda",
"dateCreated": "2014-12-04 12:21:54",
"dateUpdated": "2014-12-09 10:39:26"
}, {
"taskId": "29",
"name": "asd",
"description": "asd",
"dateCreated": "2014-12-04 12:21:58",
"dateUpdated": "2014-12-09 10:39:47"
}],
"success": 1
}
要获得所有任务:
if let tasks = jsonResult["tasks"] as? NSArray // All Task
{
if let task = tasks[0] as? NSDictionary // Single task
{
if let taskName = task["name"] as? NSString // Task name
{
println(taskName)
}
}
}
与上面类似,您可以使用键作为下标来获取所有数据。
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我来说两句