Alrighty folks, here is the code to get hours/mins/secs in your UIPickerView. You can add 3 labels an strategically place them on the picker. I have attached a picture as well. If you like the answer do rate it up! Good developers share knowledge not hide it like some people suggested. Have fun coding! In … Read more
I just built something today specifying a deployment target of iOS 4.0. With only armv7 specified in Architectures, Xcode warned me that to support anything below iOS4.2 I had to include armv6 in Architectures. Just edit that field, click the “+” button when the dialog pops up and enter the literal “armv6”. In my case, … Read more
Just use a prototype cell as your section header and / or footer. add an extra cell and put your desired elements in it. set the identifier to something specific (in my case SectionHeader) implement the tableView:viewForHeaderInSection: method or the tableView:viewForFooterInSection: method use [tableView dequeueReusableCellWithIdentifier:] to get the header implement the tableView:heightForHeaderInSection: method. -(UIView *) … Read more
The UIViewController docs are pretty clear on when and when not to call willMove/didMove methods. Check out the “Implementing a Container View Controller” documentation. The docs say, that if you do not override addChildViewController, you do not have to call willMoveToParentViewController: method. However you do need to call the didMoveToParentViewController: method after the transition is … Read more
Autolayout can be enabled or disabled on each .storyboard or .xib file. Just select the particular file and modify the “Use Autolayout” property using the File inspector in Xcode: Using autolayout enabled interface files with the deployment target set to an iOS version prior to 6.0 results in compilation errors, e.g.: Error in MainStoryboard.storyboard:3: Auto … Read more
It is not very intuitive how to disable ARC on MULTIPLE files, for a while I was do it one by one until a figured out how to do that. Select desired files at Target/Build Phases/Compile Sources in Xcode (CMD+click or Shift+click) PRESS ENTER (double click will reset the selection, so it does’t work) Type … Read more
This is clearly an Apple server issue, not an Xcode/iOS/OSX issue. Just wait patiently and Apple’s servers will catch up to the traffic, or solve whatever issues they’re having at their end. If you’re anxious, feel free to just sit there and restart Xcode until it works – but it’s not restarting Xcode, only the … Read more
I was having the same issue trying to get a newly created Xcode 4.2 project running on an iPhone 3G 4.2.1. Here is how I was able to get it to run. 1) Change the Target’s “Build Settings” ==> “Architecture” from “Standard (armv7)” to “other”. Add armv6 and armv7. 2) Change the Target’s “Build Settings” … Read more
The difference is that an object will be deallocated as soon as there are no strong pointers to it. Even if weak pointers point to it, once the last strong pointer is gone, the object will be deallocated, and all remaining weak pointers will be zeroed out. Perhaps an example is in order. Imagine our … Read more
I can understand your confusion. Especially since recent updates to Xcode and the new LLVM compiler changed the way ivars and properties can be declared. Before “modern” Objective-C (in “old” Obj-C 2.0) you didn’t have a lot of choices. Instance variables used to be declared in the header between the curly brackets { }: // … Read more