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2014/10/15 ¤U¤È 10:09:09
iphone Programming Glossary: flowhttp://stackoverflow.com/questions/12084015/ios-push-notification-how-to-get-the-notification-data-when-you-click-on-the-a you are in applicationDidBecomeActive and if you have clicked on the app icon instead of the push notification. The flow is If you click on the push notification then didReceiveRemoteNotification will be triggered but if you click on the original..
how do you determine spacing between cells in UICollectionView flowLayout http://stackoverflow.com/questions/13017257/how-do-you-determine-spacing-between-cells-in-uicollectionview-flowlayout do you determine spacing between cells in UICollectionView flowLayout I have a UICollectionView with a flow layout and each cell is a square. How do I determine the spacing between each.. do you determine spacing between cells in UICollectionView flowLayout I have a UICollectionView with a flow layout and each cell is a square. How do I determine the spacing between each cells on each row I can't seem to find the.. that items are ALWAYS left aligned. I found that if an item ended up on a line by itself it would be centered by the flow layout. I made the following changes to address this issue. This situation would only ever occur if you have cells that..
How to save the content in UIWebView for faster loading on next launch? http://stackoverflow.com/questions/1343515/how-to-save-the-content-in-uiwebview-for-faster-loading-on-next-launch by any NSURLConnection UIWebView included. And in my case it works . What you need to understand is the global flow YOU loadRequest on a UIWebView This goes into NSURLCache to ask is there something cached for this request NSCachedURLResponse..
Ignore certain exceptions when using Xcode's All Exceptions breakpoint http://stackoverflow.com/questions/14370632/ignore-certain-exceptions-when-using-xcodes-all-exceptions-breakpoint private Core Data exceptions as determined by the class name being prefixed by _NSCoreData that are used for control flow. Note that the eax register is only correct for the iOS Simulator. On the Device you'll want to change the register to r0..
Upload live streaming video from iPhone like Ustream or Qik http://stackoverflow.com/questions/1960782/upload-live-streaming-video-from-iphone-like-ustream-or-qik That callback sends each frame over the network to the server which has a custom setup to receive it. Here's the flow http developer.apple.com library ios #documentation AudioVideo Conceptual AVFoundationPG Articles 03_MediaCapture.html#..
camera overlay view - just for preview? http://stackoverflow.com/questions/2081872/camera-overlay-view-just-for-preview cameraOverlayView atIndex 1 cameraOverlayView.hidden NO theTimer invalidate The whole NSTimer thing is added to the flow to ensure that the reordering work around will happen exactly when the UIImagePickerController will be totally ready for..
How to unit test asynchronous APIs? http://stackoverflow.com/questions/2162213/how-to-unit-test-asynchronous-apis and found a different solution that works for me. I use the classic approach for turning async operations into a sync flow by using a semaphore as follows create the object that will perform an async operation MyConnection conn MyConnection new..
Try-catch exception handling practice for iPhone/Objective-C http://stackoverflow.com/questions/3678438/try-catch-exception-handling-practice-for-iphone-objective-c C Programming Language state that exceptions are resource intensive and that one should not use exceptions for general flow control or simply to signify errors. From reading a few related questions here I also gather that people are not often using.. to use @try @catch to deal with unrecoverable errors. It is never appropriate to use @throw @try @catch to do control flow like operations. In particular it would not be appropriate to use for catching out of bounds exceptions unless your goal..
Architectural and design question about uploading photos from iPhone app and S3 http://stackoverflow.com/questions/4481311/architectural-and-design-question-about-uploading-photos-from-iphone-app-and-s3 into my S3 bucket without giving it my secret Additionally I'm not sure if this is a good design or not because the flow would be iphone uploads to S3 gets the URL then tells the server what the URL is so it can add it to our database to reference.. the source code to retrieve the Secret Access Key. Does anyone have any advice on the best architectural design and flow for this Update The more I dig into this it seems that a bunch of pople recommend using the HTTP POST method with the json.. described here http docs.amazonwebservices.com AmazonS3 2006 03 01 dev index.html UsingHTTPPOST.html . With this the flow would be something like 1 iPhone makes request to my server asking for policy file 2 server generates json policy file and..
Uploading live streaming video from iPhone [duplicate] http://stackoverflow.com/questions/5062266/uploading-live-streaming-video-from-iphone That callback sends each frame over the network to the server which has a custom setup to receive it. Here's the flow http developer.apple.com library ios #documentation AudioVideo Conceptual AVFoundationPG Articles 03_MediaCapture.html#..
Can somebody explain the process of a UIViewController birth (which method follows which)? http://stackoverflow.com/questions/5107604/can-somebody-explain-the-process-of-a-uiviewcontroller-birth-which-method-follo has identified that its view is required but not yet loaded the loadView method will be called. The basic message flow goes something like this view loadView viewDidLoad Note that if you override the view method loadView and viewDidLoad will.. long as the view does not have a superview i.e. if it is not currently part of the active view heirarchy . The message flow goes as follows view nil viewDidUnload 2a. Loading the view programmatically If you choose to override loadView you can..
How to list only online users on facebook with xmpp framework http://stackoverflow.com/questions/5300912/how-to-list-only-online-users-on-facebook-with-xmpp-framework setAlpha 1.0 self.view addSubview tableView self.tableView reloadData self showTopBar I don't know the actual flow of the xmpp framework for showing users online and to implement chat feature... i have the following delegate methods as..
How can I optimize the rendering of a large model in OpenGL ES 1.1? http://stackoverflow.com/questions/5718846/how-can-i-optimize-the-rendering-of-a-large-model-in-opengl-es-1-1 at any point. Cut out anything that reads the current state like all glGet calls because they really mess with the flow of the PowerVR GPUs. There are other things you can do that will lead to smaller performance improvements like using interleaved..
Scrolling with two fingers with a UIScrollView http://stackoverflow.com/questions/787212/scrolling-with-two-fingers-with-a-uiscrollview don't bubble back to UIScrollView through the responder chain i.e. make sure to handle them all 2 respect the usual flow of touch events i.e. touchesBegan than some number of touchesBegan touchesMoved touchesEnded finished with touchesEnded..
What is the difference between a .xib file and a .storyboard? http://stackoverflow.com/questions/8436324/what-is-the-difference-between-a-xib-file-and-a-storyboard achieves two things .storyboard is essentially one single file for all your screens in the app and it shows the flow of the screens. You can add segues transitions between screens this way. So this minimizes the boilerplate code required..
What are the benefits of using Storyboards instead of xib files in iOS programming? http://stackoverflow.com/questions/9083759/what-are-the-benefits-of-using-storyboards-instead-of-xib-files-in-ios-programmi Segues A nice way to manage how different controllers talk to each other Storyboards give you a complete look at the flow of your application that you can never get from individual nib files floating around. A reducer of all the clutter that..
http://stackoverflow.com/questions/13511733/how-to-make-supplementary-view-float-in-uicollectionview-as-section-headers-do-i in Code rather than IB as they're removed when you set a Custom Layout. Remember to add UICollectionViewDelegateFlowLayout to your .h file too Create a new Subclass of UICollectionViewFlowLayout call it whatever you want and make sure the.. Remember to add UICollectionViewDelegateFlowLayout to your .h file too Create a new Subclass of UICollectionViewFlowLayout call it whatever you want and make sure the H file has #import UIKit UIKit.h @interface YourSubclassNameHere UICollectionViewFlowLayout.. whatever you want and make sure the H file has #import UIKit UIKit.h @interface YourSubclassNameHere UICollectionViewFlowLayout @end Inside the Implementation File make sure it has the following NSArray layoutAttributesForElementsInRect CGRect..
MFMailComposeViewController image orientation http://stackoverflow.com/questions/20204495/mfmailcomposeviewcontroller-image-orientation the orientation property and rotates the image appropriately while NOT touching the underlying storage at 3264x2448 . Flow of control goes to the E Mailer code now and the orientation property is still present in gImag so when the MFMailComposeViewController.. now get the following results Things are unchanged in the imagePickerController code the image is captured as before. Flow of control goes on to the E Mailer code but now the orientation property has been stripped from the tmp image so when the..
How can I create objective-C Framework for iOS Application http://stackoverflow.com/questions/5389856/how-can-i-create-objective-c-framework-for-ios-application existing project. I am think not only the sharing function. More like a Image Slider a PDF Viewer a Browser. a Cover Flow. Currently I have code for all this Functions. But it take too much time to others to integrate it and use it. If any issue..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers Fair 'nuff. A bit further on we get this slide telling us what we should do. Page 18 51 Best Practices for Data Flow Figure out exactly what needs to be communicated Define input parameters for your view controller For communicating back..
GCD, Threads, Program Flow and UI Updating http://stackoverflow.com/questions/7290931/gcd-threads-program-flow-and-ui-updating Threads Program Flow and UI Updating I'm having a hard time figuring out how to put this all together. I have a puzzle solving app on the mac...
performSelectorOnMainThread with multiple parameter http://stackoverflow.com/questions/7693203/performselectoronmainthread-with-multiple-parameter
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