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2014/10/15 ¤U¤È 10:10:14
iphone Programming Glossary: importantlyIs it possible to connect two ios devices using sockets by getting their IP addressess? http://stackoverflow.com/questions/10210835/is-it-possible-to-connect-two-ios-devices-using-sockets-by-getting-their-ip-addr peers who've joined and left etc. But you have to design and implement a mechanism for trading that information. More importantly you need to jumpstart things in some way because when a new peer starts up it's in a mesh of just itself and it has no information..
What programming skills I need to become an iPhone developer? [closed] http://stackoverflow.com/questions/1043820/what-programming-skills-i-need-to-become-an-iphone-developer message foo or setFoo to the object. These two statements seem very similar but are in fact radically different. Most importantly foo and self.foo are not the same thing though often they may appear to be the same thing. Assigning to the latter will..
Hardware accelerated h.264 decoding to texture, overlay or similar in iOS http://stackoverflow.com/questions/10646657/hardware-accelerated-h-264-decoding-to-texture-overlay-or-similar-in-ios for you try hello world first answers. I know my stuff and just want to know if what I want to do is possible and most importantly supported so the app won't get eventually rejected before I study the details by myself. edit I am not knowledgeable in..
Using accelerometer to calculate speeds http://stackoverflow.com/questions/10921395/using-accelerometer-to-calculate-speeds use a mobile phone as the data collection device. What we are trying to accomplish is how much acceleration and more importantly deceleration a driver exerts when exposed to certain prompts. I found this paper that has allot of useful information Accelerometer..
“Application windows are expected to have a root view controller” conditional appearance http://stackoverflow.com/questions/14051129/application-windows-are-expected-to-have-a-root-view-controller-conditional-ap launch Is this because I've created a new UIWindow Why the difference between those two methods is so big And most importantly how can I get rid of this warning while putting the code in the viewDidLoad method EDIT I have encountered the same problem..
UITableView & UIScrollview stop cocos2d animations http://stackoverflow.com/questions/15185720/uitableview-uiscrollview-stop-cocos2d-animations to mention I made a subclass of UIScrollView that handles cocoaFriendlyRendering YES on init NO on dealloc and more importantly it overrides the touch events as to forward them to cocos2d as needed whenever the scroll view isn't scrolling . These are..
Apple Singleton example query? http://stackoverflow.com/questions/2410830/apple-singleton-example-query approach has the following advantages Less code. More flexible in cases where a non shared instance is useful. Most importantly the code does what it says it does. A caller who thinks he's making a unique instance with alloc doesn't encounter surprising..
UITableViewCell with custom gradient background, with another gradient as highlight color http://stackoverflow.com/questions/2634557/uitableviewcell-with-custom-gradient-background-with-another-gradient-as-highli add it to the cell's layer with insertSubLayer atIndex using index 0 . This works just fine except for two things Most importantly I can't figure out how to change to a different gradient color when the row is highlighted. I have tried a couple things..
Error from Debugger: Previous frame inner to this frame (gdb could not unwind past this frame) http://stackoverflow.com/questions/3285493/error-from-debugger-previous-frame-inner-to-this-frame-gdb-could-not-unwind-pa it continues happily until the next breakpoint when it pops up the same issue. What does this message mean and more importantly how can I fix it I have been debugging this app for a long time without ever encountering this error. I tried a clean build..
UIScrollView Infinite Scrolling http://stackoverflow.com/questions/3430267/uiscrollview-infinite-scrolling then when I do make the contentsize bigger move the existing content along add the new data to the beginning and then importantly adjust the contentOffset so the data under the view port stays the same. This works perfectly if I scroll slowly or enable..
iPhone: Create a reusable component (control) that has some Interface Builder pieces and some code http://stackoverflow.com/questions/4036398/iphone-create-a-reusable-component-control-that-has-some-interface-builder-pi images were associated with the two UIImages b there is a lot of manual rewiring of four or five outlets and c most importantly this doesn't do bring along the code. Perhaps there's an easy way to wire up the code I think I could create an IBPlugin..
Can the exposure time be manually adjusted for an iOS cameras? http://stackoverflow.com/questions/4745270/can-the-exposure-time-be-manually-adjusted-for-an-ios-cameras you would have to decrease the shutter speed of the camera this unfortunately does not appear to be possible and more importantly against the HIG Changing the behavior of iPhone external hardware is a violation of the iPhone Developer Program License..
http://stackoverflow.com/questions/5396348/do-auto-renewable-subscriptions-send-an-skpaymenttransactionstatepurchased-trans would flow just like a restoreCompletedtRansactions but it would only restore the attached transactions and most importantly it would not require log in by the user. It has the same security protection as the http post a 64 bit encoded JSON containing..
facebookErrDomain error 10000 when calling graph api Facebook ios http://stackoverflow.com/questions/5497302/facebookerrdomain-error-10000-when-calling-graph-api-facebook-ios method. Please see their sample code which shows how to respond to the various events which you will need to do most importantly the fbDidLogin and fbDidNotLogin ones. Only once you have a successful login should you access the Graph API. In addition..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers an example of how to do this visually using Interface Builder take a look at this tutorial . Third and perhaps most importantly note that the best practices mentioned in the Stanford presentation are much easier to understand if you think about them..
How can I improve the performance of my custom OpenGL ES 2.0 depth texture generation? http://stackoverflow.com/questions/6051237/how-can-i-improve-the-performance-of-my-custom-opengl-es-2-0-depth-texture-gener texture. This combination along with proper mipmapping for the texture seems to yield a ~10 performance boost. More importantly I now do a pass before rendering both my depth texture and the final raytraced impostors where I lay down some opaque geometry..
Objective-C ARC Error: -fobjc-arc is not supported with fragile abi http://stackoverflow.com/questions/6965990/objective-c-arc-error-fobjc-arc-is-not-supported-with-fragile-abi up 29 times Apple LLVM compiler 3.0 Error fobjc arc is not supported with fragile abi What does this mean And more importantly how can I fix it Thanks in advance iphone objective c xcode ios5 automatic ref counting share improve this question ..
Objective-C: Asynchronously populate UITableView - how to do this? http://stackoverflow.com/questions/7491517/objective-c-asynchronously-populate-uitableview-how-to-do-this
Need some help understanding transient properties in Core Data http://stackoverflow.com/questions/7504391/need-some-help-understanding-transient-properties-in-core-data knows what properties must have values what default minimum and max values are when the property is changed and most importantly whether the managed object has a key name for a property. All this provides the managed part of managed objects. Modeled..
http://stackoverflow.com/questions/802879/iphone-and-crypto-libraries exemptions in the requirements for an ERN. See @JosephH's answer for the location of the FAQ on iTunesConnect. Most importantly read the EAR Controls for Items That Use Encryption FAQ at BIS to understand the phrase classified under Category 5 Part..
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