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2014/10/15 ¤U¤È 10:04:33
iphone Programming Glossary: behaviorLazy load images in UITableView http://stackoverflow.com/questions/1130089/lazy-load-images-in-uitableview again Otherwise reuse of cells shows old images . Can someone please tell me how to duplicate this behavior. iphone ios objective c uitableview uitableviewcontroller share improve this question checkout..
UIScrollView horizontal paging like Mobile Safari tabs http://stackoverflow.com/questions/1220354/uiscrollview-horizontal-paging-like-mobile-safari-tabs horizontal paging view with a page control at the bottom. I am trying to replicate this particular behavior where a horizontally scrollable UIScrollView shows some of the next view's content. The Apple provided..
Assertion failure in dequeueReusableCellWithIdentifier:forIndexPath: http://stackoverflow.com/questions/12737860/assertion-failure-in-dequeuereusablecellwithidentifierforindexpath it doesn't have a cell to give you. You need to use the dequeueReusableCellWithIdentifier for that behavior UITableViewCell cell tableView dequeueReusableCellWithIdentifier CellIdentifier Notice that dequeueReusableCellWithIdentifier..
How do I change the Navigation Bar color in iOS 7? http://stackoverflow.com/questions/18929864/how-do-i-change-the-navigation-bar-color-in-ios-7 find an option in my storyboard . iphone ios xcode ipad apple share improve this question The behavior of tintColor for bars has changed in iOS 7.0. It no longer affects the bar's background. From the documentation..
How to disable phone number linking in Mobile Safari? http://stackoverflow.com/questions/226131/how-to-disable-phone-number-linking-in-mobile-safari an IP address and Safari is turning that into a phone number link. Is it possible to disable this behavior for a whole page or an element on a page iphone safari mobile safari share improve this question..
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 the iPhone I'm having the same problem that a couple of others have had with getting the correct behavior in a web app on an orientation change and there doesn't seem to be an obvious solution I've seen this.. mode I have to double tap on something twice first to zoom all the way in the normal double tap behavior and again to zoom all the way out again the normal double tap behavior . When it zooms out it zooms.. in the normal double tap behavior and again to zoom all the way out again the normal double tap behavior . When it zooms out it zooms out to the correct NEW scale for landscape mode. Switching back to portrait..
Does UIGestureRecognizer work on a UIWebView? http://stackoverflow.com/questions/2909807/does-uigesturerecognizer-work-on-a-uiwebview a selection and copy. In your event handler you can use event.preventDefault to stop the default behavior. I also found the webkit user select none css property handy for some things. var touch function touch_start..
UIButton inside a view that has a UITapGestureRecognizer http://stackoverflow.com/questions/3344341/uibutton-inside-a-view-that-has-a-uitapgesturerecognizer after I received it's tap. Because with it the new view can also be removed. Means I want a behavior like the fullscreen vide controls . iphone objective c cocoa touch share improve this question ..
http://stackoverflow.com/questions/3372333/ipad-keyboard-will-not-dismiss-if-modal-view-controller-presentation-style-is-ui Note see accepted answer not top voted one for solution as of iOS 4.3. This question is about a behavior discovered in the iPad keyboard where it refuses to be dismissed if shown in a modal dialog with a navigation..
http://stackoverflow.com/questions/3504173/detect-retina-display in 2x mode even though we know that device does not contain a Retina display. Apple changed this behavior in iOS4.2 for the iPad it returns 1.0 in both 1x and 2x modes. You can test this yourself in the simulator...
How do I reset after a UIScrollView zoom? http://stackoverflow.com/questions/448285/how-do-i-reset-after-a-uiscrollview-zoom the adjustment in the normal setTransform method. This seems to provide the correct scaling behavior while letting you draw a crisp view at the completion of a zoom. UPDATE 7 23 2010 iPhone OS 3.2 and.. crisp view at the completion of a zoom. UPDATE 7 23 2010 iPhone OS 3.2 and above have changed the behavior of scroll views in regards to zooming. Now a UIScrollView will respect the identity transform you apply..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events iphone background location multitasking share improve this question I have seen this behavior too. After trying a lot I discovered two things which could help. But I am still uncertain how this.. terminated. VoIP apps will be started in background automatically after bootup With abusing this behavior you can make your app be looking like running forever . Register for one background process i.e. VoIP..
Lazy load images in UITableViewCell http://stackoverflow.com/questions/531482/lazy-load-images-in-uitableviewcell the images are loaded they are not loaded again. Can someone please tell me how to duplicate this behavior. Thanks. Edit Trying to cache images in an NSMutableDictionary object creates problems when the user..
CADisplayLink OpenGL rendering breaks UIScrollView behaviour http://stackoverflow.com/questions/5944050/cadisplaylink-opengl-rendering-breaks-uiscrollview-behaviour on the main thread triggered by the CADisplayLink are what's breaking UIScrollView's scrolling behavior here. Your OpenGL ES rendering might be taking long enough for each frame to throw off the timing of.. NSRunLoopCommonModes on my CADisplayLink I don't see any interruption of the native scrolling behavior of a table view that's onscreen at the same time as the rendering. For this you can create a GCD serial..
Dispelling the UIImage imageNamed: FUD http://stackoverflow.com/questions/924740/dispelling-the-uiimage-imagenamed-fud I would recommend primarily is to avoid redrawing that large image . With respect to the general behavior of the cache it does cache based on filename so two instances of imageNamed with the same name should..
Lazy load images in UITableView http://stackoverflow.com/questions/1130089/lazy-load-images-in-uitableview I have to load each image every time a cell becomes visible again Otherwise reuse of cells shows old images . Can someone please tell me how to duplicate this behavior. iphone ios objective c uitableview uitableviewcontroller share improve this question checkout SDWebImage README Section says how to use it in your app. share..
UIScrollView horizontal paging like Mobile Safari tabs http://stackoverflow.com/questions/1220354/uiscrollview-horizontal-paging-like-mobile-safari-tabs you to switch pages by entering a sort of UIScrollView horizontal paging view with a page control at the bottom. I am trying to replicate this particular behavior where a horizontally scrollable UIScrollView shows some of the next view's content. The Apple provided example PageControl shows how to use a UIScrollView for horizontal..
Assertion failure in dequeueReusableCellWithIdentifier:forIndexPath: http://stackoverflow.com/questions/12737860/assertion-failure-in-dequeuereusablecellwithidentifierforindexpath code you seem to expect the dequeue method to return nil if it doesn't have a cell to give you. You need to use the dequeueReusableCellWithIdentifier for that behavior UITableViewCell cell tableView dequeueReusableCellWithIdentifier CellIdentifier Notice that dequeueReusableCellWithIdentifier and dequeueReusableCellWithIdentifier..
How do I change the Navigation Bar color in iOS 7? http://stackoverflow.com/questions/18929864/how-do-i-change-the-navigation-bar-color-in-ios-7 blue along with the utility bar at the top. I can't seem to find an option in my storyboard . iphone ios xcode ipad apple share improve this question The behavior of tintColor for bars has changed in iOS 7.0. It no longer affects the bar's background. From the documentation barTintColor Class Reference The tint color to apply..
How to disable phone number linking in Mobile Safari? http://stackoverflow.com/questions/226131/how-to-disable-phone-number-linking-in-mobile-safari to the telephone numbers. I am writing a web page containing an IP address and Safari is turning that into a phone number link. Is it possible to disable this behavior for a whole page or an element on a page iphone safari mobile safari share improve this question This seems to be the right thing to do according to the Safari..
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 the scale zoom of a web app on an orientation change on the iPhone I'm having the same problem that a couple of others have had with getting the correct behavior in a web app on an orientation change and there doesn't seem to be an obvious solution I've seen this question asked a couple of times on Stack Overflow and no.. it's scaled up. To get it to scale correctly for the landscape mode I have to double tap on something twice first to zoom all the way in the normal double tap behavior and again to zoom all the way out again the normal double tap behavior . When it zooms out it zooms out to the correct NEW scale for landscape mode. Switching back.. to double tap on something twice first to zoom all the way in the normal double tap behavior and again to zoom all the way out again the normal double tap behavior . When it zooms out it zooms out to the correct NEW scale for landscape mode. Switching back to portrait seems to work more consistently that is it handles the..
Does UIGestureRecognizer work on a UIWebView? http://stackoverflow.com/questions/2909807/does-uigesturerecognizer-work-on-a-uiwebview a long touch. WebKit may try to handle a long touch to start a selection and copy. In your event handler you can use event.preventDefault to stop the default behavior. I also found the webkit user select none css property handy for some things. var touch function touch_start event TouchEvent event.preventDefault touch touch.startX..
UIButton inside a view that has a UITapGestureRecognizer http://stackoverflow.com/questions/3344341/uibutton-inside-a-view-that-has-a-uitapgesturerecognizer get highlighted. I can't just remove the UITapGestureRecognizer after I received it's tap. Because with it the new view can also be removed. Means I want a behavior like the fullscreen vide controls . iphone objective c cocoa touch share improve this question You can set your controller or view whichever creates the gesture..
http://stackoverflow.com/questions/3372333/ipad-keyboard-will-not-dismiss-if-modal-view-controller-presentation-style-is-ui controller presentation style is UIModalPresentationFormSheet Note see accepted answer not top voted one for solution as of iOS 4.3. This question is about a behavior discovered in the iPad keyboard where it refuses to be dismissed if shown in a modal dialog with a navigation controller. Basically if I present the navigation..
http://stackoverflow.com/questions/3504173/detect-retina-display iPad running iOS3.2 scale will return 1.0 in 1x mode and 2.0 in 2x mode even though we know that device does not contain a Retina display. Apple changed this behavior in iOS4.2 for the iPad it returns 1.0 in both 1x and 2x modes. You can test this yourself in the simulator. I test for the displayLinkWithTarget selector method..
How do I reset after a UIScrollView zoom? http://stackoverflow.com/questions/448285/how-do-i-reset-after-a-uiscrollview-zoom is done the transform is reset to a scale of 1.0 by bypassing the adjustment in the normal setTransform method. This seems to provide the correct scaling behavior while letting you draw a crisp view at the completion of a zoom. UPDATE 7 23 2010 iPhone OS 3.2 and above have changed the behavior of scroll views in regards to.. the correct scaling behavior while letting you draw a crisp view at the completion of a zoom. UPDATE 7 23 2010 iPhone OS 3.2 and above have changed the behavior of scroll views in regards to zooming. Now a UIScrollView will respect the identity transform you apply to a content view and only provide the relative scale factor..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events Does anyone have any clues as to how this can be accomplished iphone background location multitasking share improve this question I have seen this behavior too. After trying a lot I discovered two things which could help. But I am still uncertain how this may influence the reviewing process. If you use one of the backgrounding.. will be automatically restarted in background if the app was terminated. VoIP apps will be started in background automatically after bootup With abusing this behavior you can make your app be looking like running forever . Register for one background process i.e. VoIP . This will cause your app to be restarted after termination...
Lazy load images in UITableViewCell http://stackoverflow.com/questions/531482/lazy-load-images-in-uitableviewcell load images only for cells currently visible and once the images are loaded they are not loaded again. Can someone please tell me how to duplicate this behavior. Thanks. Edit Trying to cache images in an NSMutableDictionary object creates problems when the user scrolls fast. I am getting images only when scrolling completely..
CADisplayLink OpenGL rendering breaks UIScrollView behaviour http://stackoverflow.com/questions/5944050/cadisplaylink-opengl-rendering-breaks-uiscrollview-behaviour share improve this question It's possible that slow updates on the main thread triggered by the CADisplayLink are what's breaking UIScrollView's scrolling behavior here. Your OpenGL ES rendering might be taking long enough for each frame to throw off the timing of a UIScrollView when using NSRunLoopCommonModes for the CADisplayLink... for which can be found at that link and in testing with using NSRunLoopCommonModes on my CADisplayLink I don't see any interruption of the native scrolling behavior of a table view that's onscreen at the same time as the rendering. For this you can create a GCD serial dispatch queue and use it for all of your rendering updates..
Dispelling the UIImage imageNamed: FUD http://stackoverflow.com/questions/924740/dispelling-the-uiimage-imagenamed-fud to redraw often then there are alternatives although the one I would recommend primarily is to avoid redrawing that large image . With respect to the general behavior of the cache it does cache based on filename so two instances of imageNamed with the same name should result in references to the same cached data and the cache..
Lazy load images in UITableView http://stackoverflow.com/questions/1130089/lazy-load-images-in-uitableview becomes visible again Otherwise reuse of cells shows old images . Can someone please tell me how to duplicate this behavior. iphone ios objective c uitableview uitableviewcontroller share improve this question checkout SDWebImage README Section..
UIScrollView horizontal paging like Mobile Safari tabs http://stackoverflow.com/questions/1220354/uiscrollview-horizontal-paging-like-mobile-safari-tabs of UIScrollView horizontal paging view with a page control at the bottom. I am trying to replicate this particular behavior where a horizontally scrollable UIScrollView shows some of the next view's content. The Apple provided example PageControl..
Assertion failure in dequeueReusableCellWithIdentifier:forIndexPath: http://stackoverflow.com/questions/12737860/assertion-failure-in-dequeuereusablecellwithidentifierforindexpath to return nil if it doesn't have a cell to give you. You need to use the dequeueReusableCellWithIdentifier for that behavior UITableViewCell cell tableView dequeueReusableCellWithIdentifier CellIdentifier Notice that dequeueReusableCellWithIdentifier..
How do I change the Navigation Bar color in iOS 7? http://stackoverflow.com/questions/18929864/how-do-i-change-the-navigation-bar-color-in-ios-7 I can't seem to find an option in my storyboard . iphone ios xcode ipad apple share improve this question The behavior of tintColor for bars has changed in iOS 7.0. It no longer affects the bar's background. From the documentation barTintColor..
How to disable phone number linking in Mobile Safari? http://stackoverflow.com/questions/226131/how-to-disable-phone-number-linking-in-mobile-safari web page containing an IP address and Safari is turning that into a phone number link. Is it possible to disable this behavior for a whole page or an element on a page iphone safari mobile safari share improve this question This seems to be 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 change on the iPhone I'm having the same problem that a couple of others have had with getting the correct behavior in a web app on an orientation change and there doesn't seem to be an obvious solution I've seen this question asked a couple.. for the landscape mode I have to double tap on something twice first to zoom all the way in the normal double tap behavior and again to zoom all the way out again the normal double tap behavior . When it zooms out it zooms out to the correct NEW.. to zoom all the way in the normal double tap behavior and again to zoom all the way out again the normal double tap behavior . When it zooms out it zooms out to the correct NEW scale for landscape mode. Switching back to portrait seems to work more..
Does UIGestureRecognizer work on a UIWebView? http://stackoverflow.com/questions/2909807/does-uigesturerecognizer-work-on-a-uiwebview a long touch to start a selection and copy. In your event handler you can use event.preventDefault to stop the default behavior. I also found the webkit user select none css property handy for some things. var touch function touch_start event TouchEvent..
UIButton inside a view that has a UITapGestureRecognizer http://stackoverflow.com/questions/3344341/uibutton-inside-a-view-that-has-a-uitapgesturerecognizer the UITapGestureRecognizer after I received it's tap. Because with it the new view can also be removed. Means I want a behavior like the fullscreen vide controls . iphone objective c cocoa touch share improve this question You can set your controller..
http://stackoverflow.com/questions/3372333/ipad-keyboard-will-not-dismiss-if-modal-view-controller-presentation-style-is-ui Note see accepted answer not top voted one for solution as of iOS 4.3. This question is about a behavior discovered in the iPad keyboard where it refuses to be dismissed if shown in a modal dialog with a navigation controller...
http://stackoverflow.com/questions/3504173/detect-retina-display in 1x mode and 2.0 in 2x mode even though we know that device does not contain a Retina display. Apple changed this behavior in iOS4.2 for the iPad it returns 1.0 in both 1x and 2x modes. You can test this yourself in the simulator. I test for the..
How do I reset after a UIScrollView zoom? http://stackoverflow.com/questions/448285/how-do-i-reset-after-a-uiscrollview-zoom scale of 1.0 by bypassing the adjustment in the normal setTransform method. This seems to provide the correct scaling behavior while letting you draw a crisp view at the completion of a zoom. UPDATE 7 23 2010 iPhone OS 3.2 and above have changed the.. letting you draw a crisp view at the completion of a zoom. UPDATE 7 23 2010 iPhone OS 3.2 and above have changed the behavior of scroll views in regards to zooming. Now a UIScrollView will respect the identity transform you apply to a content view..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events how this can be accomplished iphone background location multitasking share improve this question I have seen this behavior too. After trying a lot I discovered two things which could help. But I am still uncertain how this may influence the reviewing.. if the app was terminated. VoIP apps will be started in background automatically after bootup With abusing this behavior you can make your app be looking like running forever . Register for one background process i.e. VoIP . This will cause..
Lazy load images in UITableViewCell http://stackoverflow.com/questions/531482/lazy-load-images-in-uitableviewcell visible and once the images are loaded they are not loaded again. Can someone please tell me how to duplicate this behavior. Thanks. Edit Trying to cache images in an NSMutableDictionary object creates problems when the user scrolls fast. I am..
CADisplayLink OpenGL rendering breaks UIScrollView behaviour http://stackoverflow.com/questions/5944050/cadisplaylink-opengl-rendering-breaks-uiscrollview-behaviour that slow updates on the main thread triggered by the CADisplayLink are what's breaking UIScrollView's scrolling behavior here. Your OpenGL ES rendering might be taking long enough for each frame to throw off the timing of a UIScrollView when.. in testing with using NSRunLoopCommonModes on my CADisplayLink I don't see any interruption of the native scrolling behavior of a table view that's onscreen at the same time as the rendering. For this you can create a GCD serial dispatch queue and..
Dispelling the UIImage imageNamed: FUD http://stackoverflow.com/questions/924740/dispelling-the-uiimage-imagenamed-fud although the one I would recommend primarily is to avoid redrawing that large image . With respect to the general behavior of the cache it does cache based on filename so two instances of imageNamed with the same name should result in references..
iOS Image Orientation has Strange Behavior http://stackoverflow.com/questions/10600613/ios-image-orientation-has-strange-behavior Image Orientation has Strange Behavior For the past few weeks I've been working with images in objective c and noticing a lot of strange behavior. First like..
IOS 7 Navigation Bar text and arrow color http://stackoverflow.com/questions/19029833/ios-7-navigation-bar-text-and-arrow-color change those colors like on image bellow iphone ios objective c uinavigationbar ios7 share improve this question Behavior from some of the properties of UINavigationBar has changed from iOS 7 . You can see in the image shown below Two beautiful..
Try-catch exception handling practice for iPhone/Objective-C http://stackoverflow.com/questions/3678438/try-catch-exception-handling-practice-for-iphone-objective-c error then typically crash or at the least warn the user that your app is in an inconsistent state and may lose data. Behavior of any exception thrown through system framework code is undefined. Your if test to do bounds checking is a far more appropriate..
Usage of NSException in iPhone Apps http://stackoverflow.com/questions/4310560/usage-of-nsexception-in-iphone-apps error then typically crash or at the least warn the user that your app is in an inconsistent state and may lose data. Behavior of any exception thrown through system framework code is undefined. Can you explain the Behavior of any exception thrown.. and may lose data. Behavior of any exception thrown through system framework code is undefined. Can you explain the Behavior of any exception thrown through system framework code is undefined. in detail Sure. The system frameworks use a design where..
Return to app behavior after phone call different in native code than UIWebView http://stackoverflow.com/questions/5317783/return-to-app-behavior-after-phone-call-different-in-native-code-than-uiwebview back to my application after completing a phone call iphone objective c uiwebview share improve this question Behavior does differ between calling UIApplication openURL with a tel URL and clicking a link to the same URL in a UIWebView . Using..
Change Default Scrolling Behavior of UITableView Section Header http://stackoverflow.com/questions/664781/change-default-scrolling-behavior-of-uitableview-section-header Default Scrolling Behavior of UITableView Section Header I have a UITableView with two sections. It is a simple table view. I am using viewForHeaderInSection..
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