ios5

问题 I used below code to replace nulls from json response with empty string, but it is not working. Please help me out to fix this issue, i am getting nulls from server response in lot of scenarios and App crashes. Code: - (NSMutableDictionary *)recursive:(NSMutableDictionary *)dictionaryResponse { NSMutableDictionary *dictionary=[[NSMutableDictionary alloc]initWithDictionary:dictionaryResponse]; for (NSString *key in [dictionary allKeys]) { id nullString = [dictionary objectForKey:key]; if (

问题 I used below code to replace nulls from json response with empty string, but it is not working. Please help me out to fix this issue, i am getting nulls from server response in lot of scenarios and App crashes. Code: - (NSMutableDictionary *)recursive:(NSMutableDictionary *)dictionaryResponse { NSMutableDictionary *dictionary=[[NSMutableDictionary alloc]initWithDictionary:dictionaryResponse]; for (NSString *key in [dictionary allKeys]) { id nullString = [dictionary objectForKey:key]; if (

问题 I'd like to understand if there is any advantage in declaring properties ivars instead of letting the compiler do it for us, considering only to build code for IOS5.. I think that the best practice should be not to declare them, otherwise you should remember of things like declaring ivars as __weak if the corresponding property is declared as weak.. it is necessary to do that, right? Otherwise the weak property is assigned to a strong ivar by default and it is no more weak... 回答1: I usually

问题 I'm creating a project using UIPageViewController for the page turning effect. I'm using storyboard, which I think is great, to setup the UIPageViewController. How do I add a second UIPageViewController and hook it up? I have posted some screenshots to show what I've done so far. 回答1: I think what you are looking to do is to implement the page view controller data source delegates: - (UIViewController *)pageViewController:(UIPageViewController *)pageViewController

问题 I am using the utility application template in Xcode with a main and a flipside view. In the main view I have a property label called L0. I am trying to copy that label on the flipside view. On the flipside view, I have declared @property (weak, nonatomic) IBOutlet UILabel *label; It is synthesized in the .m file @synthesize label = _label; and my prepareForFegue method is : - (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{ if ([[segue identifier] isEqualToString:@

问题 I'm trying to use CorePlot to draw a simple plot. I'm working from this tutorial, but when I type this in my ViewController.h : <CPPlotDataSource> { CPXYGraph *graph; } I encounter an error: CPTAnnotation.h file not found What might be the cause? 回答1: The Core Plot class prefix has changed from "CP" to "CPT" since that tutorial was written. If you're using anything later than Core Plot 0.3, you'll need to make the change in your code, too. There are several other needed changes that are

问题 What follows applies only to Xcode 4.3.1 and 4.3.2, but not earlier versions. Also, I have iOS 5.1 on my iPad. My app, built with my ad-hoc provisioning profile, failed to install via iTunes on my real iPad. In desperation, I have also tried my wild card profile, my app store release profile and my development profile ... still no install. In an effort to also provide pictures for what I have, please take a look at the following: 1) Provisioning Profiles in the Finder: http://webpages.charter

问题 I'm developing an application for a company for iOS > 5.0 using Xcode 4.6.1. To test application, i archived application using Save for Enterprise or Ad-hoc deployment . I've checked also Save for Enterprise Distribution and filled appropriate fields. So far, i'm able to create an myApp.ipa file and myApp.plist file. I've created an url to myApp.plist . Once, i clicked url, myApp starts to download correctly. My problem is that once download's finished, myApp deletes itself and i got no crash

问题 I'm running test cases which uses sqlite database to test my code on iPhone simulator using default SenTestingkit, when i try to get the home directory using either of the following ways NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *docsPath = [paths objectAtIndex:0]; or NSString *home = NSHomeDirectory(); i got a wrong path that points to the following bath /Users/{user}/Library/Application Support/iPhone Simulator/5.1 and i

问题 I'm new to Objective-C and my C/C++ skills are quite rusty. What better time to learn iOS development(!) I'm trying to reverse geolocate a position using the CLGeocoder class in iOS. I can successfully get the data I'm interested in (street address) inside the block/callback, however when I try to use that data to populate my variable (outside of the block) the data isn't there. It's as if the object in the block disappears before the MapView object calls it. I'm using __block which as I