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2014/10/15 ¤U¤È 10:10:20
iphone Programming Glossary: initialWhere to place the “Core Data Stack” in a Cocoa/Cocoa Touch application http://stackoverflow.com/questions/1267520/where-to-place-the-core-data-stack-in-a-cocoa-cocoa-touch-application In the iPhone Core Data Template Apple places the Core Data Stack in the App Delegate. My initial inclination however is to move this code into it's own class whose responsibility is to handle the management..
NSURLConnection and Basic HTTP Authentication http://stackoverflow.com/questions/1973325/nsurlconnection-and-basic-http-authentication and Basic HTTP Authentication I need to invoke an initial GET HTTP request with Basic Authentication. This would be the first time the request is sent to the..
How do I reset the scale/zoom of a web app on an orientation change on the iPhone? http://stackoverflow.com/questions/2557801/how-do-i-reset-the-scale-zoom-of-a-web-app-on-an-orientation-change-on-the-iphon is something that can be fixed with Javascript With the viewport meta content I am setting the initial scale to 1.0 and I am NOT setting minimum or maximum scale nor do I want to . I am setting the width.. scalable by not setting a maximum scale in markup. meta name viewport content width device width initial scale 1 Then disable scalability with javascript on load until gesturestart when you allow scalability.. ' if viewportmeta viewportmeta.content 'width device width minimum scale 1.0 maximum scale 1.0 initial scale 1.0' document.body.addEventListener 'gesturestart' function viewportmeta.content 'width device..
iphone webkit css animations cause flicker http://stackoverflow.com/questions/2946748/iphone-webkit-css-animations-cause-flicker this question I added webkit backface visiblity and that mostly helped but I still had an initial flicker after reloading the page. When I added webkit perspective 1000 there was no flicker whatsoever...
http://stackoverflow.com/questions/3245733/apple-gyroscope-sample-code create an enableGyro method or just call it from the init method. The following will store the initial device attitude and cause the device to continue sampling the gyro and updating its attitude property...
How do I apply a perspective transform to a UIView? http://stackoverflow.com/questions/347721/how-do-i-apply-a-perspective-transform-to-a-uiview exactly why this works but it does. You'll need to set this value to a negative fraction for your initial transform then apply your layer rotation transforms to that. You should also be able to do the following..
How to filter NSFetchedResultsController (CoreData) with UISearchDisplayController/UISearchBar http://stackoverflow.com/questions/4471289/how-to-filter-nsfetchedresultscontroller-coredata-with-uisearchdisplaycontroll predicate in the handleSearchForTerm searchString method Does the predicate have to contain the initial predicate as well as the search terms or does it remember that it used a predicate to retrieve data..
How to Sync iPhone Core Data with web server, and then push to other devices? http://stackoverflow.com/questions/5035132/how-to-sync-iphone-core-data-with-web-server-and-then-push-to-other-devices against the objectId and device Id in the AllObjects table and find the record to change in the initial table. All changes should be timestamped so that they can be merged. The device will have to poll the..
Example or explanation of Core Data Migration with multiple passes? http://stackoverflow.com/questions/5995231/example-or-explanation-of-core-data-migration-with-multiple-passes but a long way to go before it's obvious. I'll illustrate the explanation with an example. The initial situation is this Data Model Version 1 It's the model you get when you create a project with the navigation..
how to create iphone's wobbling icon effect? http://stackoverflow.com/questions/929364/how-to-create-iphones-wobbling-icon-effect 1.0f animation.delegate self animation.repeatCount 5 CGFloat wobbleAngle 0.0872664626f NSValue initial NSValue valueWithCATransform3D CATransform3DMakeRotation 0.0f 0.0f 0.0f 1.0f NSValue middle NSValue.. CATransform3DMakeRotation wobbleAngle 0.0f 0.0f 1.0f animation.values NSArray arrayWithObjects initial middle final nil imageView.layer addAnimation animation forKey keypath Or there could be a totally simpler..
Where to place the “Core Data Stack” in a Cocoa/Cocoa Touch application http://stackoverflow.com/questions/1267520/where-to-place-the-core-data-stack-in-a-cocoa-cocoa-touch-application the &ldquo Core Data Stack&rdquo in a Cocoa Cocoa Touch application In the iPhone Core Data Template Apple places the Core Data Stack in the App Delegate. My initial inclination however is to move this code into it's own class whose responsibility is to handle the management of the Core Data Stack. Do you typically encapsulate..
NSURLConnection and Basic HTTP Authentication http://stackoverflow.com/questions/1973325/nsurlconnection-and-basic-http-authentication and Basic HTTP Authentication I need to invoke an initial GET HTTP request with Basic Authentication. This would be the first time the request is sent to the server and I already have the username password so there's no..
How do I reset the scale/zoom of a web app on an orientation change on the iPhone? http://stackoverflow.com/questions/2557801/how-do-i-reset-the-scale-zoom-of-a-web-app-on-an-orientation-change-on-the-iphon portrait. I am trying to figure out if this is a bug or if this is something that can be fixed with Javascript With the viewport meta content I am setting the initial scale to 1.0 and I am NOT setting minimum or maximum scale nor do I want to . I am setting the width to device width. Any ideas I know a lot of people would be.. for this on his blog Orientation and scale Keep the Markup scalable by not setting a maximum scale in markup. meta name viewport content width device width initial scale 1 Then disable scalability with javascript on load until gesturestart when you allow scalability again with this script if navigator.userAgent.match iPhone.. i var viewportmeta document.querySelector 'meta name viewport ' if viewportmeta viewportmeta.content 'width device width minimum scale 1.0 maximum scale 1.0 initial scale 1.0' document.body.addEventListener 'gesturestart' function viewportmeta.content 'width device width minimum scale 0.25 maximum scale 1.6' false share..
iphone webkit css animations cause flicker http://stackoverflow.com/questions/2946748/iphone-webkit-css-animations-cause-flicker is happening iphone css animation webkit flicker share improve this question I added webkit backface visiblity and that mostly helped but I still had an initial flicker after reloading the page. When I added webkit perspective 1000 there was no flicker whatsoever. webkit perspective 1000 webkit backface visibility hidden..
http://stackoverflow.com/questions/3245733/apple-gyroscope-sample-code nil When you want to enable the gyro you could create an enableGyro method or just call it from the init method. The following will store the initial device attitude and cause the device to continue sampling the gyro and updating its attitude property. void enableGyro CMDeviceMotion deviceMotion motionManager.deviceMotion..
How do I apply a perspective transform to a UIView? http://stackoverflow.com/questions/347721/how-do-i-apply-a-perspective-transform-to-a-uiview m34 . Matrix math has never been my thing so I can't explain exactly why this works but it does. You'll need to set this value to a negative fraction for your initial transform then apply your layer rotation transforms to that. You should also be able to do the following UIView myView self subviews objectAtIndex 0 CALayer layer..
How to filter NSFetchedResultsController (CoreData) with UISearchDisplayController/UISearchBar http://stackoverflow.com/questions/4471289/how-to-filter-nsfetchedresultscontroller-coredata-with-uisearchdisplaycontroll it as simple as clearing the FRC cache and then changing the predicate in the handleSearchForTerm searchString method Does the predicate have to contain the initial predicate as well as the search terms or does it remember that it used a predicate to retrieve data in the first place How do I get back to the original results..
How to Sync iPhone Core Data with web server, and then push to other devices? http://stackoverflow.com/questions/5035132/how-to-sync-iphone-core-data-with-web-server-and-then-push-to-other-devices in the local data store. Then my cloud server will check against the objectId and device Id in the AllObjects table and find the record to change in the initial table. All changes should be timestamped so that they can be merged. The device will have to poll the server without using up too much battery. The local devices..
Example or explanation of Core Data Migration with multiple passes? http://stackoverflow.com/questions/5995231/example-or-explanation-of-core-data-migration-with-multiple-passes Apple hints in their documentation . It's actually very easy but a long way to go before it's obvious. I'll illustrate the explanation with an example. The initial situation is this Data Model Version 1 It's the model you get when you create a project with the navigation based app with core data storage template. I compiled..
how to create iphone's wobbling icon effect? http://stackoverflow.com/questions/929364/how-to-create-iphones-wobbling-icon-effect animationWithKeyPath keypath animation.duration 1.0f animation.delegate self animation.repeatCount 5 CGFloat wobbleAngle 0.0872664626f NSValue initial NSValue valueWithCATransform3D CATransform3DMakeRotation 0.0f 0.0f 0.0f 1.0f NSValue middle NSValue valueWithCATransform3D CATransform3DMakeRotation wobbleAngle.. 0.0f 0.0f 1.0f NSValue final NSValue valueWithCATransform3D CATransform3DMakeRotation wobbleAngle 0.0f 0.0f 1.0f animation.values NSArray arrayWithObjects initial middle final nil imageView.layer addAnimation animation forKey keypath Or there could be a totally simpler solution that I'm just missing. Appreciate any pointers...
How to share or post by mail, twitter and facebook from the current application? http://stackoverflow.com/questions/10860652/how-to-share-or-post-by-mail-twitter-and-facebook-from-the-current-application imageNamed @ anyImage.png TWTweetComposeViewController tweetViewController TWTweetComposeViewController alloc init Set initial text tweetViewController setInitialText @ your text here if image tweetViewController addImage image tweetViewController.completionHandler..
How does the iOS app Display Recorder record the screen without using private API? http://stackoverflow.com/questions/11090184/how-does-the-ios-app-display-recorder-record-the-screen-without-using-private-ap in at runtime a static analyzer cannot tell that this app uses it thereby escaping detection. It does look like my initial suspicion was correct it is using IOSurface to sneak past sandbox restrictions to have raw screen access. It also uses UIGetScreenImage..
Where to place the “Core Data Stack” in a Cocoa/Cocoa Touch application http://stackoverflow.com/questions/1267520/where-to-place-the-core-data-stack-in-a-cocoa-cocoa-touch-application Cocoa Touch application In the iPhone Core Data Template Apple places the Core Data Stack in the App Delegate. My initial inclination however is to move this code into it's own class whose responsibility is to handle the management of the Core..
iphone: Calculating battery life http://stackoverflow.com/questions/1469549/iphone-calculating-battery-life only reports a change at 5 increments up or down but you can use a timer and measure the time between two changes or initial battery level and first change . Here's how you register for the notifications Use this call to get the current battery..
NSURLConnection and Basic HTTP Authentication http://stackoverflow.com/questions/1973325/nsurlconnection-and-basic-http-authentication and Basic HTTP Authentication I need to invoke an initial GET HTTP request with Basic Authentication. This would be the first time the request is sent to the server and I already..
How do I reset the scale/zoom of a web app on an orientation change on the iPhone? http://stackoverflow.com/questions/2557801/how-do-i-reset-the-scale-zoom-of-a-web-app-on-an-orientation-change-on-the-iphon is a bug or if this is something that can be fixed with Javascript With the viewport meta content I am setting the initial scale to 1.0 and I am NOT setting minimum or maximum scale nor do I want to . I am setting the width to device width. Any.. scale Keep the Markup scalable by not setting a maximum scale in markup. meta name viewport content width device width initial scale 1 Then disable scalability with javascript on load until gesturestart when you allow scalability again with this script.. 'meta name viewport ' if viewportmeta viewportmeta.content 'width device width minimum scale 1.0 maximum scale 1.0 initial scale 1.0' document.body.addEventListener 'gesturestart' function viewportmeta.content 'width device width minimum scale..
Showing login view controller before main tab bar controller http://stackoverflow.com/questions/2716755/showing-login-view-controller-before-main-tab-bar-controller show a LoginViewController and if login is successful then show the tab bar controller. This is how I implemented an initial test version left out some typical header stuff etc ... AppDelegate.h @interface AppDelegate_Pad NSObject UIApplicationDelegate..
iphone webkit css animations cause flicker http://stackoverflow.com/questions/2946748/iphone-webkit-css-animations-cause-flicker flicker share improve this question I added webkit backface visiblity and that mostly helped but I still had an initial flicker after reloading the page. When I added webkit perspective 1000 there was no flicker whatsoever. webkit perspective..
http://stackoverflow.com/questions/3245733/apple-gyroscope-sample-code the gyro you could create an enableGyro method or just call it from the init method. The following will store the initial device attitude and cause the device to continue sampling the gyro and updating its attitude property. void enableGyro CMDeviceMotion..
How do I apply a perspective transform to a UIView? http://stackoverflow.com/questions/347721/how-do-i-apply-a-perspective-transform-to-a-uiview so I can't explain exactly why this works but it does. You'll need to set this value to a negative fraction for your initial transform then apply your layer rotation transforms to that. You should also be able to do the following UIView myView self..
How to filter NSFetchedResultsController (CoreData) with UISearchDisplayController/UISearchBar http://stackoverflow.com/questions/4471289/how-to-filter-nsfetchedresultscontroller-coredata-with-uisearchdisplaycontroll and then changing the predicate in the handleSearchForTerm searchString method Does the predicate have to contain the initial predicate as well as the search terms or does it remember that it used a predicate to retrieve data in the first place How..
How to Sync iPhone Core Data with web server, and then push to other devices? http://stackoverflow.com/questions/5035132/how-to-sync-iphone-core-data-with-web-server-and-then-push-to-other-devices server will check against the objectId and device Id in the AllObjects table and find the record to change in the initial table. All changes should be timestamped so that they can be merged. The device will have to poll the server without using..
Example or explanation of Core Data Migration with multiple passes? http://stackoverflow.com/questions/5995231/example-or-explanation-of-core-data-migration-with-multiple-passes It's actually very easy but a long way to go before it's obvious. I'll illustrate the explanation with an example. The initial situation is this Data Model Version 1 It's the model you get when you create a project with the navigation based app with..
Why am I having to manually set my view's frame in viewDidLoad? http://stackoverflow.com/questions/6757018/why-am-i-having-to-manually-set-my-views-frame-in-viewdidload the view not match the frame when it autorotates back to the same orientation Does the view frame not get set to the initial orientation Very confused... I should mention that none of the above including my kludgy hack changes anything visually... manually the recommended place to do so is in loadView. Since you construct the view yourself in this method you can initialize its frame to whatever you'd like. The size you choose doesn't matter much since UIKit is likely to change it on you anyway...
UIButton can't be touched while animated with UIView animateWithDuration http://stackoverflow.com/questions/8346100/uibutton-cant-be-touched-while-animated-with-uiview-animatewithduration This code is in the view controller subclass that is managing your buttons. When I did this I was interested in the initial touch rather than the touch ending which is typically when a tap would register but the principle is the same. Remember..
iPhone UIWebView local resources using Javascript and handling onorientationChange http://stackoverflow.com/questions/843820/iphone-uiwebview-local-resources-using-javascript-and-handling-onorientationchan name description content Welcome to engege interactive on the iPhone meta name viewport content width device width initial scale 1.0 maximum scale 1.0 link rel apple touch icon href images template engage.png style type text css @import url iphone.css.. class contentType alert 'ORIENTATION ' contentType catch e alert 'ERROR ' e.message window.onload function initialLoad try loaded updateOrientation catch e alert 'ERROR ' e.message function loaded document.getElementById page_wrapper..
how to create iphone's wobbling icon effect? http://stackoverflow.com/questions/929364/how-to-create-iphones-wobbling-icon-effect animation.duration 1.0f animation.delegate self animation.repeatCount 5 CGFloat wobbleAngle 0.0872664626f NSValue initial NSValue valueWithCATransform3D CATransform3DMakeRotation 0.0f 0.0f 0.0f 1.0f NSValue middle NSValue valueWithCATransform3D.. valueWithCATransform3D CATransform3DMakeRotation wobbleAngle 0.0f 0.0f 1.0f animation.values NSArray arrayWithObjects initial middle final nil imageView.layer addAnimation animation forKey keypath Or there could be a totally simpler solution that..
How to Use UIView transitionWithView? http://stackoverflow.com/questions/12144929/how-to-use-uiview-transitionwithview using UIView transitionWithView iphone share improve this question Consider your view to be animated as someView. Initial frame of someView be bottomRect i.e. bottom of the view. final position be topRect. set initial frame someView. frame bottomRect..
http://stackoverflow.com/questions/13580386/iphone-landscape-issues landscape issues xcode 4.5.2 I want to create an application in iPad I settings my info.plist as below Initial interface orientation Landscape left home button When I started my app the orientation device have landscape mode but my..
Initial iPhone virtual keyboard display is slow for a UITextField. Is this hack around required? http://stackoverflow.com/questions/1628915/initial-iphone-virtual-keyboard-display-is-slow-for-a-uitextfield-is-this-hack iPhone virtual keyboard display is slow for a UITextField. Is this hack around required I have an app with a UITextField..
How to Add a Splash Screen or Initial View to the Xcode iPhone Utility Template http://stackoverflow.com/questions/2318300/how-to-add-a-splash-screen-or-initial-view-to-the-xcode-iphone-utility-template to Add a Splash Screen or Initial View to the Xcode iPhone Utility Template I have made an application using the utility template. I want to add one more..
iphone xcode Landscape mode by default http://stackoverflow.com/questions/2761495/iphone-xcode-landscape-mode-by-default can I set an iphone app to start in Landscape mode and stays that way iphone share improve this question Set the Initial interface orientation app.plist entry to Landscape left or right home button and add or more likely uncomment and edit the..
How do I correctly detect orientation change using javascript and Phonegap in IOS? http://stackoverflow.com/questions/5284878/how-do-i-correctly-detect-orientation-change-using-javascript-and-phonegap-in-io
What is the best method of re-rendering a web page on orientation change? http://stackoverflow.com/questions/7919172/what-is-the-best-method-of-re-rendering-a-web-page-on-orientation-change head of your template. Example this sets the page width to be the device's screen width and an initial zoom of 100 . Initial zoom is applied at page load but not when the orientation is changed. meta name viewport content width device width initial..
Crash when adding persistent store (iCloud enabled) in app delegate http://stackoverflow.com/questions/8021753/crash-when-adding-persistent-store-icloud-enabled-in-app-delegate note userInfo NSNotificationCenter defaultCenter postNotification refreshNotification do any additional work here Initial problem Using iCloud on iOS 5.0.1 I'm occasionally getting errors pertaining to the persistent store. I'm going to continue..
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