From here: http://developer.apple.com/library/ios/#samplecode/datecell/listings/MyTableViewController_m.html
The program runs. But I need to modify it so it will fit within my program. I can't get it to work even though I have copied verbatim. The issue is that as I click on start date, nothing happens. So as I am debugging, I'm noticing that my datePicker (in my program) is always nil. So I'm trying to figure out how apple does it, and they never initialize the datePicker. But it always has a non-nil value.
Where is apple allocing and initializing datePicker?
Also, I'm trying not to use storyboards, which Apple's program uses. (Though when I import the storyboard it doesn't help.)
First of all there's a button "Download source code". It contains working project.
Version 1.2, 2013-01-04: Upgraded for iOS 6.0, now using Automatic
Reference Counting (ARC) and storyboards, updated to adopt current
best practices for Objective-C.
This "about" info tells us you have to use deployment target 6.0 as the project uses storyboards with autolayouts, and you have to set "Automatic Reference Counting" to YES in your project properties.
All other guesses can be made only if you give us an error that you get.
P.S: I have downloaded the project and it works fine.
Related
I am not very familiar with Xcode,
Since I think every decent IDE should have a shortcut for auto-fix a template of implemented protocol (such as interface in java) to save some effects of the programmers to just fill in the logic and don't have to type in the method name and parameter stuff.
Such as when we meet this:
And I googled around and some guy said that there should be a fix all in scope thing in the Editor, but seems I can't make that clickable :-(
So, how to do this with xcode? Thanks.
Unfortunately Xcode is fairly behind compared to other IDE's in features for refactoring and such.
The main Xcode version: 8.x, can't do what you wish for. But some of it will be/is available in beta Xcode 9
Xcode may suggest a fix for a compiler error. You can click the errors individually to see the suggested fix(es) and select one.
Alternatively the 'Fix All In Scope' allows you to tell Xcode to select suggested fixes of the current file.
I'm struggling with this problem for nearly half a year now with multiple XCode versions and Macs.
I can't reproduce bug steps exactly but the things go off when project has multiple targets like for Mac and iOS.
First of all XCode declines to take #if os into account and always highlight syntax only in one type of sections. E.g. if I have os(iOS) and os(OSX) somewhere it will chose only one and highlight only them.
Same goes for autocompletion. Things just not working in that type of projects.
I really dont know what to do since developmenet process turns into struggling. I dont want to split my project into multiple one, I'm happy with multi-target setup.
Is there a way to fix that?
Almost a year late.
Anyway I faced the same situation where a multi target OSX/iOS application in Xcode did not take into account the #if TARGET_OS_IPHONE conditional and failed to autocomplete method names from framework only showing the iOS variant.
Found a solution, based on this blog entry : you have to clearly state the Framework search path on each target in Build settings
Edit: This line was present in the iOS target settings. I copy/pasted it to the MacOS target in Xcode where it was automatically adjusted to the right path.
Edit 2: Loosely related but if you run in trouble with interface builder picking wrong classe files see this answer I just posted in another old thread.
After I installed the latest version of xcode i'm having a very annoying issue.
While I'm coding, xcode goes nuts. Without me doing anything weird, just typing code, xcode stop recognizing classes.
For example: I want to add UITableViewDelegate to my class, but it doesnt recognize it. After i type it manually sometimes it recognize it and it is shown in purple, some other time it doesnt. But both times it won't really consider it, so if I try to write down a method of that delegate, it won't show it.
Other times if I try to call a variable of a certain class, while trying to autocompleting it, it shows <>.
Other times if I try to call any class, let's say I try to type var test = UIActionSheet, it just shows a few elements in the autocomplete list (raw types, primitives, the classes of my main project, but it doesn't show the majority of classes).
It's like it's missing the documentation and the link with the main frameworks...
I'm working on a simple tabbed app from yesterday and it's the 3rd time i started all over because of this issue, thinking that starting over would fix the issue, but it's not working.
If i open a different project while the issue is going on, the other project works ( but i recoded all over my app so it's not that one the issue, and i also have the same issue on other project... it just doesn't affect 2 project at the same time )
i tried deleting derived data
i tried restarting both xcode and the comp
What's going on?
Here are two screenshoots where you can see what's happening:
I had the same problem earlier.
Exit Xcode and delete Derived Data folder here ~/Library/Developer/Xcode
Restart Xcode and you should see the autocomplete working again.
You have to learn how to take it apart and put back together.
Either reinstall Xcode, if it doesn't help, create a new project.
Then copy source files one by one and see when it breaks.
Freshly install the XCode IDE version 6.1
Use CMD + F to find all _element.
Check that if you named one variable _element
The following code may reproduce the error:
class _element:NSObject {
}
let _element:UIImage = UIImage()
// type _element under this line
I recently became interested in mobile app development and want to take my coding experience from elec. engring to the iphone. Im having trouble though. I am trying to compile my first app onto my phone (got it to run perfectly on the iOS simulator last night). However, upon compiling i get the following error:"Interface Builder XIB Compiler Error: Interface Builder could not open the document "xxx.xib" because it does not exist"
I've tried going into my target and setting Main Interface to xxx.xib and I still get the same error on both iPhone and iOS simulation. I've tried setting my interface to Xcode 4.6 and messing with the builds and views, still have the same issue. I built it from scratch - same issue.
All help appreciated. I know the default is building with story board, but I am following a book I am happy with and I want to go through it with the .xib because thats what the book uses. Thanks -
Select your project (blue icon) in the project navigator then choose:
Build Phases > Copy Bundle Resources
Make sure your xib file is on the list. You can add it by clicking the plus (+) icon on the lower left.
UPDATE:
Consider opening a new project as a sanity check. Change the background color and verify that it runs in the simulator. If it does then this will point to a project settings issue rather than an installation problem.
You may also want to look at the following walkthrough by Apple. Hopefully following the steps will help illustrate anything you might be missing.
Apple also has a latest tutorial that I recommend you walkthrough. After completing please let me know if you are continuing to have this problem. The number of potential problems is greater than simply walking through the 15 min tutorial.
I've developed and application for iPhone. It works fine on os4 but it does not work on os3.1. In fact works but there are some problems; after splash screen a what screen appears. while I leaving the application I can see the application is opened successfully but just see while exiting.
So I wonder if there is a tool which says which apis have problems with os3.1? So I have a chance to replace them.
If you want to check a specific API, just run this in your code somewhere with an appropriate response. For example, to see if print is supported, run this...
if (NSClassFromString(#"UIPrintInfo")) {
}
Set your project's Base SDK to iphone-os-3-1, then build. All the error messages about classes, methods, and functions that don't exist must designate things added since iphone-os-3-1, since your project built and linked fine against the iphone-os-4-0 SDK.
If you don't have the iphone-os-3-1 SDK, try this instead:
Open your project's Build Settings.
Find the "Preprocessor Macros" setting.
Edit it and add __IPHONE_OS_VERSION_MAX_ALLOWED=30100
Now, try building. This should cause everything introduced after iOS 3.1 to be labeled unavailable, producing the same errors as if you had switched to the iphone-os-3-1 SDK.
It's a good idea to get a second installation of Xcode for this situation, in this case you need 3.2.1 with SDK 3.1.3 - I wish I could help you with a download link since it is no longer shown on Apple's page, but I have googled in the past and found direct, official download links which will work as long as you are signed in with your developer account, so good luck.
The annoying bit is that you need to go through your project files and set "Base SDK" to 3.1.3 and then back once you have completed the exercise. But it is the easiest way to flag what you can't do in 3.1.3. "sudo rm -rf" (I feel nervous even typing that) has an excellent method there but you need to have an inkling of what might be safe and what might not before you implement it or else you end up with code 10x the size it needs to be.
Apple really needs to sort out this issue - hopefully by flagging methods that are prior to your specified "Deployment Target", in the same way that deprecated methods are flagged.