nsstring

Setting a cell's text with multiple JSON objects

旧巷老猫 提交于 2019-12-01 14:20:19
I've got a simple web service in passing through some data into a table view and it's working fine. This is the code I currently have: [[cell detailTextLabel] setText:[item objectForKey:@"Ball 1"]]; As I said, this works perfectly and displays with a ball number, e.g. "1", taken from the web service. What I want to do is have it display, e.g. "1 & 3". Looking at some other code I thought it might have been: [[cell detailTextLabel] setText:[item objectForKey:@"Ball 1"]item objectForKey:@"Ball 2"]]; I'm totally new to Objective-C, and I'm doing a few tutorials and I'm trying to expand on them a

Hash value of String that would be stable across iOS releases?

梦想的初衷 提交于 2019-12-01 14:13:58
问题 In documentation String.hash for iOS it says: You should not rely on this property having the same hash value across releases of OS X. (strange why they speak of OS X in iOS documentation) Well, I need a hasshing function that will not change with iOS releases. It can be simple I do not need anything like SHA. Is there some library for that? There is another question about this here but the accepted (and only) answer there simply states that we should respect the note in documentation. 回答1:

reading unicode from sqlite and creating a NSString

谁说胖子不能爱 提交于 2019-12-01 13:46:22
Im working on an iOS app where I need to store and retrieve from an SQLite DB, a representation of a NSString that has subscripts. I can create a NSString at compile time with a constant: @"Br\u2082_CCl\u2084" \u2082 is a 2 subscript, \u2084 is a 4 subscript. What im storing in the SQLite db is: "Br\u2082_CCl\u2084" But what I can not figure out how to do, is reconvert that back into an NSString. The data comes back from the db as a char * "Br\\u2082_CCl\\u2084" Stripping out the extra slash has made no difference in my feeble experiments. I need a way get that back into an NSString - Thanks!

reading unicode from sqlite and creating a NSString

做~自己de王妃 提交于 2019-12-01 13:23:19
问题 Im working on an iOS app where I need to store and retrieve from an SQLite DB, a representation of a NSString that has subscripts. I can create a NSString at compile time with a constant: @"Br\u2082_CCl\u2084" \u2082 is a 2 subscript, \u2084 is a 4 subscript. What im storing in the SQLite db is: "Br\u2082_CCl\u2084" But what I can not figure out how to do, is reconvert that back into an NSString. The data comes back from the db as a char * "Br\\u2082_CCl\\u2084" Stripping out the extra slash

iOS中WebKit框架应用与解析

廉价感情. 提交于 2019-12-01 13:03:19
https://www.cnblogs.com/fengmin/p/5737355.html WebKit是iOS8之后引入的专门负责处理网页视图的框架,其比UIWebView更加强大,性能也更优。 引言 在iOS8之前,在应用中嵌入网页通常需要使用UIWebView这样一个类,这个类通过URL或者HTML文件来加载网页视图,功能十分有限,只能作为辅助嵌入原生应用程序中。虽然UIWebView也可以做原生与JavaScript交互的相关处理,然而也有很大的局限性,JavaScript要调用原生方法通常需要约定好协议之后通过Request来传递。WebKit框架中添加了一些原生与JavaScript交互的方法,增强了网页视图与原生的交互能力。并且WebKit框架中采用导航堆栈的模型来管理网页的跳转,开发者也可以更加容易的控制和管理网页的渲染。 WebKit框架概览 WebKit框架中涉及的类很多,框架的设计十分面向对象和模块化,开发者在使用时可以轻松的写出结构清晰的代码。在进行使用前,我们首先应该清楚整个框架的结构和开发思路,下面一张脑图中基本列出了WebKit框架中所涉及到的所有重要的类以及他们之间的相互关系: 如上图所示,WebKit框架中最核心的类应该属于WKWebView了,这个类专门用来渲染网页视图,其他类和协议都将基于它和服务于它。 WKWebView:网页的渲染与展示

Setting a cell's text with multiple JSON objects

守給你的承諾、 提交于 2019-12-01 12:34:43
问题 I've got a simple web service in passing through some data into a table view and it's working fine. This is the code I currently have: [[cell detailTextLabel] setText:[item objectForKey:@"Ball 1"]]; As I said, this works perfectly and displays with a ball number, e.g. "1", taken from the web service. What I want to do is have it display, e.g. "1 & 3". Looking at some other code I thought it might have been: [[cell detailTextLabel] setText:[item objectForKey:@"Ball 1"]item objectForKey:@"Ball

NSString with Unicode issue from Web Service

半世苍凉 提交于 2019-12-01 12:22:48
I have tried to search in Stackoverflow. But I could not get the correct solution. Can someone please help me? I have this data from a web service. KEY: 1036 TYPE: string VALUE = French (fran\u00E7aise) KEY: 1032 TYPE: string VALUE = Greek (\u03B5\u03BB\u03BB\u03B7\u03BD\u03B9\u03BA\u03AC) Does anyone know how to print this Unicode string correctly? I have tried to encode and decode it back (as shown below). But it is not working. :( NSString *value = [NSString stringWithFormat:@"%@", t.dataValue]; NSData *bytes = [message dataUsingEncoding:NSUTF8StringEncoding]; NSString* messageDecoded = [

Can I do NSVariableFromString like NSClassFromString and NSSelectorFromString?

自作多情 提交于 2019-12-01 12:16:21
问题 Right so I have noticed that you can do NSClassFromString and NSSelectorFromString. Is it possible to do something like NSVariableFromString? 回答1: The objective C runtime has lots of goodies for your consumption. If you want an iVar, you can call object_getInstanceVariable with a string name. If you want variables, it's a bit more work, and they have to be globally visible to the linker. You can use CFBundleGetDataPointerForName for that purpose. Be sure to read the documentation for

Function to detect the NSStringEncoding from NSURLResponse?

只谈情不闲聊 提交于 2019-12-01 11:31:24
I just wanted to know if there is any existing category or any sort of function that will return me NSStringEncoding constant out of NSURLResponse object . The issue I am facing at the moment is as I have hardcoded the encoding to NSUTF8StringEncoding when I convert the web service response data to String then it actually causes an issue , as my web service sometimes returns the response encoded in UTF8 and sometimes encoded in ASCII ( well I am not too sure about all the encodings though but yes there are sometimes other languages characters in the response like Japanese , Chinese etc ) So My

How do I properly encode Unicode characters in my NSString?

|▌冷眼眸甩不掉的悲伤 提交于 2019-12-01 10:57:16
Problem Statement I create a number of strings, concatenate them together into CSV format, and then email the string as an attachment. When these strings contain only ASCII characters, the CSV file is built and emailed properly. When I include non-ASCII characters, the result string becomes malformed and the CSV file is not created properly. (The email view shows an attachment, but it is not sent.) For instance, this works: uncle bill's house of pancakes But this doesn't (note the curly apostrophe): uncle bill’s house of pancakes Question How do I create and encode the final string properly so