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  • XCode and Instruments for memory leaks

    - by coure06
    I have tested my iphone app using XCode and instrument. I am watching the memory allocation tables, its showing me that every things is increasing i.e Bytes, Live Bytes and so on. What does it means? Am i not deallocating the objects? Can i find which objects are not deallocating using instruments?

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  • AVAudioPlayer won't play audio file after AVAudioRecorder

    - by Kevin
    I create a .caf audio file using AVAudioRecorder and if I try and play it back using AVAudioPlay I get no sound on the iPhone (if played in simulator works fine). If I close my application and reopen the file plays fine. Also I am not able to adjust the phone volume after recording unless I close and reopen my application. Any ideas?

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  • EXC_BAD_ACCESS ( i am changing Orientation )

    - by Aishwarya
    When I put my iPhone on the table while running my application it crashes the second after I pick it up. Below is the crash log. (EXC_BAD_ACCESS) objc_msgSend -[UIWindow _shouldAutorotateToInterfaceOrientation:] -[UIWindow _updateToInterfaceOrientation:duration:force] -[UIWindow _updateInterfaceOrientationFromDeviceOrientation] -[UIWindow _handleDeviceOrientationChange:] _nsnote_callback __CFXNotificationPost _CFXNotificationPostNotification -[NSNotificationCenter postNotificationName:object:userInfo:] -[UIDevice setOrientation:] -[UIApplication handleEvent:withNewEvent:] _[UIApplication sendEvent:] _UIApplicationHandleEvent SendEvent PurpleEventTimerCallBack CFRunLoopRunSpecific CFRunLookRunInMode GSEventRunModel GSEventRun -[UIApplication _run] UIApplicationMain main Have you any idea what's the problem?

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  • Json and images

    - by alecnash
    hi, I've got a db on a server and want to get some data fro my iphone. I use TouchJson and everything works fine but I've got a little problem. I don't know how to download images. When I try to build and run the app the emulator just crashes. Got any ideas what to do?

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  • String comparison in Objective-C

    - by james.ingham
    Hey, I've currently got a webserver set up which I communicate over SOAP with my iPhone app. I am returning a string containing a GUID and when I attempt to compare this with another string I get some strange results: Why would this not fire? Surely the two strings are a match? Thanks

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  • UIImage change raw pixels from white to clear?

    - by christo16
    I've tried some code from each of these questions: How to make one color transparent on a UIImage? How to mask a UIImage so that white becomes transparent on iphone? but have come up unsuccessful, unfortunately working with Core Graphics and images is not my strong suit. How would I go about accessing a UIImage's raw data and changing the white pixels to clear? Thanks!

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  • Asynchronous I/O on Mac OS X

    - by stas
    Hi, Meaning the C10K problem, what is the best way to do asynch I/O on Mac OS X (assume to use on Mac and iPhone/iPad)? On Linux our choice is epoll, on Windows is I/O Completion Ports. Top priority is performance and scalability (thousands of connections). Thanks

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  • inline assembly error

    - by Manish
    I am using inline assembly for iphone, I working for device debug mode. The instruction is as follows: __asm__("smlatb %0, %1, %2 ,%3 \n\t": "=r"(Temp): "r"(treg5) : "r"(fac5) : "r"(Temp) ); And I am getting an errors: error : expected ')' before tokedn '(' error: unknown register name 'r' in 'asm' I am using X-code 3.0 and gcc 4.0. Any ideas?

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  • OSX Weak Linking - check if a class exists and use that class

    - by psychotik
    I'm trying to create a universal iPhone app, but it uses a class defined only in a newer version of the SDK. The framework exists on older systems, but a class defined in the framework doesn't. I know I want to use some kind of weak linking, but any documentation I can find talks about runtime checks for function existence - how do I check that a class exists?

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  • UIControlEventTouchDragExit only fires ~100 pixels out

    - by Jonathan
    Im trying to "get" when a finger/touch leaves a UIButton in objective C for iphone. I was told in another answer to use UIControlEventTouchDragExit however this event only fires when the touch gets about 100 pixels away from the button, whereas I would like it to be immediate. The apple docs say that goes according to the bounds however my understand is the bounds and the frame are the same unless you rotate the UIbutton (or whatever)

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  • UIControlEventTouchDragExit only fires ~100 pixels out

    - by Jonathan
    Im trying to "get" when a finger/touch leaves a UIButton in objective C for iphone. I was told in another answer to use UIControlEventTouchDragExit however this event only fires when the touch gets about 100 pixels away from the button, whereas I would like it to be immediate. The apple docs say that goes according to the bounds however my understand is the bounds and the frame are the same unless you rotate the UIbutton (or whatever)

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  • Is it possible to restore a previous GL framebuffer?

    - by Rob
    Hi there, I'm working on an iPhone app that lets the user draw using GL. I used the GLPaint sample code project as a firm foundation, but now I want to add the ability for the user to load one of their previous drawings and continue working on it. I know how to get the framebuffer contents and save it as a UIImage. Is there a way for me to take the UIImage and tell GL to draw that? Any help is much appreciated.

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  • Get private SecKeyRef from DER file?

    - by Alexander Parfyanovich
    In my iPhone project I have used this solution to encrypt data with DER encoded certificate, which was generated by openssl commands like this: openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout privateKey.pem -out cert.pem openssl x509 -outform der -in cert.pem -out cert.der openssl rsa -in privateKey.pem -outform DER -out privateKey.der And now I want to decrypt data using private key file. How can I get the private SecKeyRef instance from DER encoded private key file?

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  • registerForRemoteNotificationTypes causes app to exit immediately

    - by esilver
    I'm seeing behaviour on my iPhone where debug builds immediately exit after a call to [[UIApplication sharedApplication] registerForRemoteNotificationTypes:UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeAlert]; The debugger reports it exited with the message Terminating in response to SpringBoard's termination. This behaviour doesn't happen on my ad hoc distribution builds. Can anyone explain this behavior?

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  • Align UItextFields one below the other in interface builder

    - by Dave
    How to align 2 textfields one below the other in a tool bar and display a button on the left side (or right side) in the vertical middle of those two fields? Please see the image to know what I am talking about. http://developer.apple.com/iphone/library/documentation/userexperience/conceptual/mobilehig/art/ui_textfields.jpg

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