nsdictionary

Accessing JSON data inside an NSDictionary generated from NSJSONSerialization

由 烂漫一生 提交于 2019-12-08 03:38:14
问题 Having some trouble accessing the JSON data in the following URL ( http://jamesstenson.com/portraits/?json=1 ), basically I want to access the "full" "url"'s underneath "attachments". My code at the moment is as follows: NSError *e = nil; NSData *jsonFeed = [NSData dataWithContentsOfURL:[NSURL URLWithString:@"http://jamesstenson.com/portraits/?json=1"]]; NSDictionary *jsonData = [NSJSONSerialization JSONObjectWithData:jsonFeed options:NSJSONReadingMutableContainers error: &e]; if (!jsonData)

How to save (and retrieve) NSAttributedString in a NSDictionary

由 岁酱吖の 提交于 2019-12-08 02:52:13
问题 I am trying to save and retrieve XML data to a file. For this purpose I am using NSDictionary 's writeToFile: The question is, how to write and retrieve an attributed string to and from a file on disk using NSDictionary 's writeToFile: ? 回答1: NSAttributedString is not a property list object, so writeToFile: won't work. It does, however, conform to NSCoding , so you can write it to an archive with your dictionary as the root object (assuming that all the other objects in the dictionary also

Sort NSArray of NSDictionaries using comparator

由 偶尔善良 提交于 2019-12-07 23:12:13
问题 I've been trying to sort an NSArray of NSDictionaries using a comparator, but I cannot seem to get the output I desire. The output I'm trying to achieve is that A-Z usernames should come first in the sorted array, then usernames that start with a digit should come second in the sorted array, and lastly usernames that start with an underscore should be last in the sorted array. Any help is truly appreciated! EDIT: It should be sorted so it looks consistent through the whole NSArray so that:

SBJSON parsing NSString to NSDictionary

由 こ雲淡風輕ζ 提交于 2019-12-07 22:17:22
问题 I'm trying to parse an NSString that contains JSON data into an NSDictionary using SBJson 3.0.4, but when I do it, I get this error: "WebKit discarded an uncaught exception in the webView:shouldInsertText:replacingDOMRange:givenAction: delegate: -[__NSCFString JSONValue]: unrecognized selector sent to instance 0x6ab7a40" As far as I know (which isn't very far), the JSON I'm getting is valid, so I don't know why this is happening. My code compiles fine too… Here it is: NSString *tempURL =

How to display image from a RSS feed

由 白昼怎懂夜的黑 提交于 2019-12-07 20:38:21
问题 I'm trying to build an app that shows the latest RSS feeds from http://news.yahoo.com/rss/ I'm able to parse the xml using NSXMLParserDelegate, I'm able to show the date and time along with the title for the particular feed, but I also want to display an image for every feed, I know how to parse the main elements but I dont know how to pass the attributes for a child element which has a url as its key... e.g. the above feed consists of the following: <item> <title>fooo</title> <description

how to edit a plist programmatically in xcode 5 iOS 7?

由 耗尽温柔 提交于 2019-12-07 18:52:11
问题 how can I edit or change a value string from: in this plist I need change or Set "NO" in Enabled Value from Item 2, I see a lot examples, but not working, or are deprecated, or don't use ARC, any idea or example code? please help guys EDIT#1: I try this (not work) NSString *path = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject]; path = [path stringByAppendingPathComponent:@"List.plist"]; NSFileManager *fileManager = [NSFileManager defaultManager];

Ios NSDictionary array - grouping values and keys

由 久未见 提交于 2019-12-07 17:58:35
问题 I have the following result of NSDictionary of Array Bath = { Keynsham = ( "nsham companies" ); }; Bath = { "Midsomer Norton" = ( "Keynsham companies" ); }; Bath = { "Norton Radstock" = ( "Keynsham taxi companies" ); }; Birmingham = { "Acock's Green" = ( "Acock's Green taxi companies" ); }; Birmingham = { "Alcester Lane's End" = ( "Alcester Lane's End taxi companies" ); }; How can i combine the values and keys so that I end up with only one category as shown below; Bath = { "Norton Radstock"

Foundation框架

由 雨燕双飞 提交于 2019-12-07 17:54:46
什么是框架 众多功能\API的集合 Foundation框架的作用 Foundation框架是Mac\iOS中其他框架的基础 Foundation框架包含了很多开发中常用的数据类型： 结构体 枚举 类 如何使用Foundation框架 要想使用Foundation框架中的功能，包含它的主文件即可 #import <Foundation/Foundation.h> Foundation框架中的类 Foundation框架提供了非常多好用的类, 比如 NSString : 字符串 NSArray : 数组 NSDictionary : 字典 NSDate : 日期 NSData : 数据 NSNumber : 数字 Foundation框架中的类都是以NS为前缀(Next Step的缩写) 乔布斯于1976年创立苹果公司 乔布斯于1985年离开苹果公司, 创立NeXT公司, 开发了Next Step操作系统 在开发Next Step操作系统过程中产生了Foundation框架 1997年, 苹果公司收购NeXT公司, 乔布斯重返苹果公司(Mac系统就是基于Next Step系统) 2007年, 苹果公司发布了iOS系统(iOS系统基于Mac系统) 不小心修改了系统文件 有时候会在不经意之间修改了系统自带的头文件, 比如NSString.h, 这时会出现以下错误: 解决方案很简单,

Generate a complete list of key-value coding paths for nested NSDictionary's?

由 可紊 提交于 2019-12-07 13:04:54
问题 I have an NSDictionary that contains keys and values, and some values will also be NSDictionary s... to an arbitrary (but reasonable) level. I would like to get a list of all valid KVC paths, e.g. given: { "foo" = "bar", "qux" = { "taco" = "delicious", "burrito" = "also delicious", } } I would get: [ "foo", "qux", "qux.taco", "qux.burrito" ] Is there a simple way to do this that already exists? 回答1: You could recurse through allKeys . A key is a key path, obviously, and then if the value is

Is there an easy way of sorting a plist (array of dictionaries) by key value?

由 混江龙づ霸主 提交于 2019-12-07 12:41:51
问题 I need to reorder a plist (an array of dictonaries) by Key value. In this example content I'd like to order by the value for the key Name (Matt, Joe): <dict> <key>Name</key> <string>Matt</string> <key>Details</key> <string>Me</string> </dict> <dict> <key>Name</key> <string>Joe</string> <key>Details</key> <string>You</string> </dict> Is there an easy way? I don't want to do it in code each time the app is run, I just want to do it to the data file. Any ideas? Happy to use any tool to get this
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