nsstring

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: How to get a UUID in objective c, like in Java UUID is used to generate unique random numbers which represents 128 bit value. 回答1: Try: CFUUIDRef udid = CFUUIDCreate(NULL); NSString *udidString = (NSString *) CFUUIDCreateString(NULL, udid); UPDATE: As of iOS 6, there is an easier way to generate UUID . And as usual, there are multiple ways to do it: Create a UUID string: NSString *uuid = [[NSUUID UUID] UUIDString]; Create a UUID: [[NSUUID UUID]; // which is same as.. [[NSUUID] alloc] init]; Creates an object of type NSConcreteUUID and can be

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Hey guys i was wondering how i could show a UISliders value as a UILabels text. Thanks 回答1: Add an action to the slider, like this: [slider addTarget:self action:@selector(sliderChanged:) forControlEvents:UIControlEventValueChanged]; Where the sliderChanged: method looks something like this: - (void)sliderChanged:(UISlider *)slider { self.label.text = [NSString stringWithFormat:@"%g", slider.value]; } 回答2: Try this: - (IBAction) sliderValueChanged:(UISlider *)sender { label.text = [NSString stringWithFormat:@"%f", slider.value]; } If label

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I've a UITableView with custom UILabel for title and one another to subtitle, in order to align the text to right. My data come from web service, which I parse and store in NSArray of NSDictionary . Some of the title or the subtitle can be nil/empty-text. For this I'm putting it in try/catch. One of the lines in my table making my app crush and I cannot figure out why. I think one of them (title/subtitle) return as NSDictionary but I made a log print for class for my objects, for my [UILabel text] , seems like everything is ok. Exception and

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: this is my code.getting this EXC_BAD_ACCESS(code=EXC_i386_GPFLT).I don'n know how to find and solve plz help me ...application getting crash when get longitude mapServerRequest="Hyderabad,india" var mapAddress:NSString=mapServerRequest mapAddress.stringByAddingPercentEncodingWithAllowedCharacters(NSCharacterSet.URLPathAllowedCharacterSet()) println(mapAddress) var urlpath=NSString(format: "http://maps.googleapis.com/maps/api/geocode/json?address=%@", mapAddress) println(urlpath) var url = NSURL.URLWithString(urlpath) println(url) var

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I got this Base64 gif image: R0lGODlhDAAMALMBAP8AAP///wAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAACH5BAUKAAEALAAAAAAMAAwAQAQZMMhJK7iY4p3nlZ8XgmNlnibXdVqolmhcRQA7 Now I want to display this Base64 String within my IPhone App. I could get this working by using the WebView: aUIWebView.scalesPageToFit = NO; aUIWebView.opaque = NO; aUIWebView.backgroundColor = [UIColor clearColor]; [aUIWebView loadHTMLString: @" " baseURL:nil]; Is it possible to do the same thing by using the UIImageView? 回答1: You don't have to encode it. Simply make

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: My date string that I am getting is 2014-01-08T21:21:22.737+05:30 of this format. How do i confer it to NSDate? I tried: NSString *currentDateString = @"2014-01-08T21:21:22.737+05:30"; [dateFormatter setDateFormat:@"yyyy-MM-dd'T'HH:mm:ss.SSS+05:30"]; NSDate *currentDate = [dateFormatter dateFromString:currentDateString]; NSLog(@"CurrentDate:%@", currentDate); It returns nil. Any thoughts? 回答1: Use this code it is working fine your dateFormatter was wrong . NSDateFormatter *dateFormatter=[[NSDateFormatter alloc]init]; NSString

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm trying to copy Apple's behavior in video playback that allows the user to stretch the video image to fill the bounds. @interface FHVideoPlayerView : UIView @end @interface FHVideoPlayerView + (Class)layerClass { return [AVPlayerLayer class]; } - (void)setAspectMode:(FHVideoPlayerAspectMode)aspectMode animated:(BOOL)animated { FHVideoPlayerAspectMode current = [self aspectMode]; FHVideoPlayerAspectMode final = aspectMode; NSString *fromValue; NSString *toValue; AVPlayerLayer *layer = (AVPlayerLayer *)[self layer]; switch (current) { case

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I know this question was asked by many people and there are several discussions and arguments on "Why to use sqlite,use FMDB,core data" etc.. to store or insert images in database.But please do understand my problem that I am very much used to sqlite3 and I am unable to go with core data or some other db.Also I am just in learning stages of iphone technology.So I request to please provide me a solution that can be dealt with sqlite only ;) Apologies if any wrong in my request! I have a text field that will show table with

Using this code I am able to compare string values. [elementName isEqualToString: @"Response"] But this compares case-sensitively. Is there a way to compare the string without case sensitivity? There’s a caseInsensitiveCompare: method on NSString , why don’t you read the documentation ? The method returns NSComparisonResult : enum { NSOrderedAscending = -1, NSOrderedSame, NSOrderedDescending }; typedef NSInteger NSComparisonResult; …ah, sorry, just now I realized you are asking for case sensitive equality. (Why don’t I read the question? :-) The default isEqual: or isEqualToString: equality