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2014/10/15 ¤U¤È 10:10:40
iphone Programming Glossary: it'dDisplay iphone application settings within your application http://stackoverflow.com/questions/1141391/display-iphone-application-settings-within-your-application a UI in the Settings app. I want to also allow the user to edit the application settings within the application but it'd be nice to reuse the same UI that is automatically created. See Application Settings Is there a way to have your application..
What happens if I don't retain IBOutlet? http://stackoverflow.com/questions/1250518/what-happens-if-i-dont-retain-iboutlet subviews array of the top level view. If instead the instance variable for the UITextField not been set via a property it'd also be around because the nib loading code had retained it when setting the instance variable. One interesting point this..
Received memory warning on setimage http://stackoverflow.com/questions/12773074/received-memory-warning-on-setimage you should have a happier time of things. Here is how I do it in my own code CGSize buttonSize CGSizeMake width height it'd be nice if UIImage took a file URL huh UIImage newImage UIImage alloc initWithContentsOfFile pathToImage if newImage this..
Does CoreData on iPhone support IN predicates? http://stackoverflow.com/questions/1436032/does-coredata-on-iphone-support-in-predicates core data share improve this question I believe Alex is right that you have to use an NSArray although obviously it'd be nicer if NSSet were accepted here since order isn't that important although it could conceivably affect how quickly the..
How to setup a predicate for this query http://stackoverflow.com/questions/1580236/how-to-setup-a-predicate-for-this-query I'm having trouble translating this into CoreData so any suggestions would be helpful. I were to construct a SQL query it'd be something like this select from Employee e where e.groupId in select from Group g where g.divisionId divisionId I tried..
How do I append a new item to a plist? http://stackoverflow.com/questions/1586529/how-do-i-append-a-new-item-to-a-plist to the filesystem. If you use an XML plist you could pretty easily parse it and incrementally write to the file but it'd also be quite a bit bigger so it's unlikely to be worth it. If rewriting the plist is taking too long you should investigate..
How can one develop iPhone apps in Java? http://stackoverflow.com/questions/2050943/how-can-one-develop-iphone-apps-in-java one develop iPhone apps in Java In my computer science class I have completed all my projects So my teacher thought it'd be a good idea to develope IPhone apps. The only problems is that the class is taught in java and IPhone apps are written..
Open a .webarchive on the iphone? http://stackoverflow.com/questions/225699/open-a-webarchive-on-the-iphone to one in mobile safari but it didn't work.... Note I was kind of hoping this could be done without a 3rd party app as it'd be a nice way to package up a WebApp for use on the iphone without needing a third party tool. iphone safari webarchive..
Memory Troubles with UIImagePicker http://stackoverflow.com/questions/2921560/memory-troubles-with-uiimagepicker Sorry for the hamfisted way I build that NSLog message too I was going to fire another UIAlertView but realized it'd be more useful to log it. Pretty reliably after toodling around in the image portion of the app for a while I'll pull up..
About download file using ASIHttpRequest http://stackoverflow.com/questions/3341658/about-download-file-using-asihttprequest 47aef091a77331fd lnk raot#47aef091a77331fd If you're going to post your question in multiple places at the same time it'd at least be polite to record the fact that you've already got an answer Answers were from BenC the ASIHTTPRequest author..
Skybox OpenGL ES iPhone and iPad http://stackoverflow.com/questions/4110893/skybox-opengl-es-iphone-and-ipad took two or three hours. I'll try to find somewhere to upload the project so that you can have a look at it. I think it'd be helpful to leaf through it and see how alien it looks. That'll probably give you a good idea about whether you could..
How to get UIView frame origin and size while animation http://stackoverflow.com/questions/4422500/how-to-get-uiview-frame-origin-and-size-while-animation effect immediately. In the background Core Animation takes care of the animation. So even if you could grab the frame it'd give you the final coordinates not the current coordinates in the midst of an animation. Access the presentation layer of..
Concurrency and serial queues in Grand Central Dispatch http://stackoverflow.com/questions/5026043/concurrency-and-serial-queues-in-grand-central-dispatch still executed serially. You could execute 100 dispatch_async calls each with a block that sleeps for 100 seconds and it'd be really fast. Follow that with a call to dispatch_sync on the same serial queue and dispatch_sync will return ~10 000..
Xcode 4 Tips and Tricks for Xcode 3 users [closed] http://stackoverflow.com/questions/5260877/xcode-4-tips-and-tricks-for-xcode-3-users has been released officially today. Now I know that plenty of devs out there have been using the preview versions and it'd be great if people could post any great tips tricks or keyboard shortcuts they've learned using those version now they're..
JavaScript on iOS: opening an HTML select element http://stackoverflow.com/questions/6097240/javascript-on-ios-opening-an-html-select-element something like var myselect document.getElementsByTagName select 0 myselect.open this method doesn't exist As a bonus it'd also be handy to know of a boolean property that says whether the select element is currently open active or not i.e. not..
Longitude, Latitude to XY coordinate conversion http://stackoverflow.com/questions/6186029/longitude-latitude-to-xy-coordinate-conversion its been given eg if you gave it a region that was a short fat rectangle but the view it had was a tall thin rectangle it'd pick the smallest region that covers the entire short fat rectangle but is the shape of a tall thin rectangle so don't get..
iPhone UIView Animation Best Practice http://stackoverflow.com/questions/630265/iphone-uiview-animation-best-practice myview removeFromSuperview UIView commitAnimations What is the best approach If you could provide a snippet as well it'd be much appreciated. NOTE I've been unable to get the second approach to work correctly. iphone ios cocoa touch uiview..
performSelector may cause a leak because its selector is unknown http://stackoverflow.com/questions/7017281/performselector-may-cause-a-leak-because-its-selector-is-unknown eventually send a message to a zombie and crash. There are ways to work around this with bridged casting but really it'd be better to simply use the IMP and function pointer methodology above. Since consumed parameters are rarely an issue this..
NSURLConnection is run many times http://stackoverflow.com/questions/886810/nsurlconnection-is-run-many-times body is changed each time. Now I create NSURL NSURLRequest and NSURLConnection from the scratch each time. I think it'd be more effective to set connection once and just use that one further. I am a newbie and not sure if that possible. There..
http://stackoverflow.com/questions/930929/isequaltostring-cocoa-error
http://stackoverflow.com/questions/1204000/iphone-uilabel-sizewithfont by the maximum # of lines you want then plugging that into the height of the size you are constraining yourself to. It'd probably look like this _price UILabel alloc init _price.text myPriceValue _price.lineBreakMode UILineBreakModeWordWrap..
Directed Graph implementation in Objective-C http://stackoverflow.com/questions/1284928/directed-graph-implementation-in-objective-c go to add a child to a Node you'd just need to traverse the children links and make sure that none are ever repeated. It'd be something like this BOOL isNodeAcyclic Node n NSMutableSet visitedNodes if visitedNodes intersectsSet n children return..
Detect touches only on non-transparent pixels of UIImageView, efficiently http://stackoverflow.com/questions/13291919/detect-touches-only-on-non-transparent-pixels-of-uiimageview-efficiently area of pixels around the hit point or trying to find a transparent path towards an edge might work better. Bonus It'd be nice to differentiate between outer and inner transparent pixels of an image. In the example the transparent pixels inside..
How can I create a translucent modal UIViewController? http://stackoverflow.com/questions/1499298/how-can-i-create-a-translucent-modal-uiviewcontroller the modal vc pops up the parent vc is hidden. Thus it looks like the action sheet is floating over a blank background. It'd be better if the action sheet could appear to pop over the original parent vc. Is there a way to achieve this Is it safe..
How to convert data to CSV or Html format http://stackoverflow.com/questions/1512883/how-to-convert-data-to-csv-or-html-format an example of how to read a csv file into an NSArray of NSArrays and to go in the reverse direction is pretty trivial. It'd be something like this warning code typed in browser NSArray data ... An NSArray of NSArrays of NSStrings NSMutableString..
What is the state of non-Objective-C programming for iPhone? http://stackoverflow.com/questions/1703088/what-is-the-state-of-non-objective-c-programming-for-iphone likely be missing things like Bluetooth connectivity and the Game Kit audio frameworks In App Purchase and the like. It'd be pretty difficult to reproduce everything Apple offers in another language and if you choose a different way and then..
iPhone: Detecting user inactivity/idle time since last screen touch http://stackoverflow.com/questions/273450/iphone-detecting-user-inactivity-idle-time-since-last-screen-touch to do that. There's this somewhat related method in UIApplication UIApplication sharedApplication .idleTimerDisabled It'd be nice if you instead had something like this NSTimeInterval timeElapsed UIApplication sharedApplication .idleTimeElapsed..
Get ppi of iPhone / iPad / iPod Touch at runtime http://stackoverflow.com/questions/3860305/get-ppi-of-iphone-ipad-ipod-touch-at-runtime iPhone iPad iPod Touch at runtime Anyone know if there's a way to get the screen density ppi of the device at runtime It'd be nice to not have to hard code the different densities in case apple switches it up in the future... iphone objective..
Animation in OpenGL ES view freezes when UIScrollView is dragged on iPhone http://stackoverflow.com/questions/4876488/animation-in-opengl-es-view-freezes-when-uiscrollview-is-dragged-on-iphone Spending too much time interrupting UIKit can lead to some very poor control responsiveness so you need to be careful. It'd be to diverge from the topic massively but although OpenGL is modal and therefore not particularly threading friendly you..
Is there a simple way to set a default font for the whole app? http://stackoverflow.com/questions/5141132/is-there-a-simple-way-to-set-a-default-font-for-the-whole-app similar Also I'd like to let the user choose that font and it's color is there a built in control which does that It'd be even greater if I could do that in the iphone settings for the app . Thanks in advance .net iphone ios monotouch share..
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