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2014/10/15 ¤U¤È 10:08:57
iphone Programming Glossary: fewAdd UIPickerView & a Button in Action sheet - How? http://stackoverflow.com/questions/1262574/add-uipickerview-a-button-in-action-sheet-how of an ActionSheet as it can lead to serious invalid context errors in iOS 7. I just spent a few hours working through this problem and ultimately decided to take a different approach. I replaced the..
http://stackoverflow.com/questions/1328638/placeholder-in-uitextview iphone objective c cocoa touch uitextfield uitextview share improve this question I made a few minor modifications to bcd's solution to allow for initialization from a xib file text wrapping and..
http://stackoverflow.com/questions/1388467/reading-epub-format one to define how everything is packaged up OEBPS a zip file of everything in the manifest plus a few extra files The specs look a bit daunting but actually once you've got the basics unzipping parsing..
How does Apple know you are using private API? http://stackoverflow.com/questions/2842357/how-does-apple-know-you-are-using-private-api Ivars such as UITouch._phase which could be the cause of rejection of Three20 based apps last few months. 3. Listing Objective C selectors or strings Objective C selectors are stored in a special region..
Is it true that one should not use NSLog() on production code? http://stackoverflow.com/questions/300673/is-it-true-that-one-should-not-use-nslog-on-production-code it true that one should not use NSLog on production code I was told this a few times in this very site but I wanted to make sure this is really the case. I was expecting to be able..
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received signal received When deploying the application to the device the program will quit after a few cycles with the following error Program received signal EXC_BAD_ACCESS . The program runs without any.. some error in your memory management. You said you've been working on iPhone development for a few weeks but not whether you are experienced with Objective C in general. If you've come from another background.. anything you get from an allocation function usually the static alloc method but there are a few others or a copy method you own the memory too and must release it when you are done. But if you get..
UITextView with Syntax Highlighting [duplicate] http://stackoverflow.com/questions/3642540/uitextview-with-syntax-highlighting framework. However this implementation is far from perfect. at least it was when I last checked a few months ago . They tried hard but still didn't manage to get to Apples perfection in user interaction... didn't manage to get to Apples perfection in user interaction. Apple must have invested at least a few man years into doing only the UI interaction with text selection and editing. Nothing to be done at..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events to check the data counters. After much reading of the Background Execution documentation and a few trial apps I'd dismissed this as impossible without abusing the background APIs. Last week I found this..
http://stackoverflow.com/questions/554997/cancel-a-uiview-animation animation ended event I want to cancel it cut it short . Is this possible Googling around finds a few people asking the same question with no answers and one or two people speculating that it can't be done...
Opening the Settings app from another app http://stackoverflow.com/questions/5655674/opening-the-settings-app-from-another-app is able to the open the settings application. Not to be annoying or anything but here are just a few results from the following google search site stackoverflow.com iphone open settings app is it possible..
OpenGL Texture Coordinates in Pixel Space http://stackoverflow.com/questions/5879403/opengl-texture-coordinates-in-pixel-space iphone objective c cocoa touch opengl es share improve this question This has been asked a few times but I don't have the links at hand so a quick and rough explanation. Let's say the texture is..
CADisplayLink OpenGL rendering breaks UIScrollView behaviour http://stackoverflow.com/questions/5944050/cadisplaylink-opengl-rendering-breaks-uiscrollview-behaviour OpenGL rendering breaks UIScrollView behaviour There are a few similar questions out there on SO links at end but none of them has allowed me to fix my problem so..
Locking the Fields in MFMailComposeViewController http://stackoverflow.com/questions/6284599/locking-the-fields-in-mfmailcomposeviewcontroller please wait overlay. I have attached an image of what this looks like while its running for the few seconds it takes . Please note I take no credit for creating the SMTP framework. It was downloaded from..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c I realize all of this is a bit confusing at some point though it will click. Here are a few references to get you going Apple's introduction to memory management. Cocoa Programming for Mac OS..
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 compiler features to ignore the warning but it may be dangerous. I've seen Clang go through a few iterations of how it handles return values that aren't assigned to local variables. There's no reason..
iPhone Data Usage Tracking/Monitoring http://stackoverflow.com/questions/7946699/iphone-data-usage-tracking-monitoring Data Usage Tracking Monitoring I've searched over this topic but found very few details which were helpful. With these details I've tried to cook some code as follows. Note Please..
Dispelling the UIImage imageNamed: FUD http://stackoverflow.com/questions/924740/dispelling-the-uiimage-imagenamed-fud always significantly inflates the data size for example a screen sized PNG file might consume a few dozen KBs when compressed but consumes over half a MB decompressed width height 4 . By contrast imageWithContentsOfFile..
Add UIPickerView & a Button in Action sheet - How? http://stackoverflow.com/questions/1262574/add-uipickerview-a-button-in-action-sheet-how its hierarchy I recommend against trying to customize the contents of an ActionSheet as it can lead to serious invalid context errors in iOS 7. I just spent a few hours working through this problem and ultimately decided to take a different approach. I replaced the call to show the action sheet with a modal view controller..
http://stackoverflow.com/questions/1328638/placeholder-in-uitextview can set for an UITextField . Does anyone know how to do this iphone objective c cocoa touch uitextfield uitextview share improve this question I made a few minor modifications to bcd's solution to allow for initialization from a xib file text wrapping and to maintain background color. Hopefully it will save others..
http://stackoverflow.com/questions/1388467/reading-epub-format the files that make up that content OPF which is an XML file one to define how everything is packaged up OEBPS a zip file of everything in the manifest plus a few extra files The specs look a bit daunting but actually once you've got the basics unzipping parsing XML down it's not particularly difficult or complex. You'll..
How does Apple know you are using private API? http://stackoverflow.com/questions/2842357/how-does-apple-know-you-are-using-private-api as _UIImageWithName Objective C classes such as UIProgressHUD Ivars such as UITouch._phase which could be the cause of rejection of Three20 based apps last few months. 3. Listing Objective C selectors or strings Objective C selectors are stored in a special region of the binary and therefore Apple could extract the content..
Is it true that one should not use NSLog() on production code? http://stackoverflow.com/questions/300673/is-it-true-that-one-should-not-use-nslog-on-production-code it true that one should not use NSLog on production code I was told this a few times in this very site but I wanted to make sure this is really the case. I was expecting to be able to sprinkle NSLog function calls throughout my code and that..
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received signal received When deploying the application to the device the program will quit after a few cycles with the following error Program received signal EXC_BAD_ACCESS . The program runs without any issue on the iPhone simulator it will also debug and run as.. I suspect the most likely explanation is that you have some error in your memory management. You said you've been working on iPhone development for a few weeks but not whether you are experienced with Objective C in general. If you've come from another background it can take a little while before you really internalise.. management rules unless you make a big point of it. Remember anything you get from an allocation function usually the static alloc method but there are a few others or a copy method you own the memory too and must release it when you are done. But if you get something back from just about anything else including factory..
UITextView with Syntax Highlighting [duplicate] http://stackoverflow.com/questions/3642540/uitextview-with-syntax-highlighting created an editable text view. You can find it in the OmniUI framework. However this implementation is far from perfect. at least it was when I last checked a few months ago . They tried hard but still didn't manage to get to Apples perfection in user interaction. Apple must have invested at least a few man years into doing.. I last checked a few months ago . They tried hard but still didn't manage to get to Apples perfection in user interaction. Apple must have invested at least a few man years into doing only the UI interaction with text selection and editing. Nothing to be done at home and as it seems even for companies as the omni group. There..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events looking into a way in my iPhone app to poll every X minutes to check the data counters. After much reading of the Background Execution documentation and a few trial apps I'd dismissed this as impossible without abusing the background APIs. Last week I found this application which does exactly that. http itunes.apple.com..
http://stackoverflow.com/questions/554997/cancel-a-uiview-animation But before the animation completes and I get the animation ended event I want to cancel it cut it short . Is this possible Googling around finds a few people asking the same question with no answers and one or two people speculating that it can't be done. iphone cocoa touch core animation share improve this..
Opening the Settings app from another app http://stackoverflow.com/questions/5655674/opening-the-settings-app-from-another-app supplied by Apple and not by the App itself. That is why it is able to the open the settings application. Not to be annoying or anything but here are just a few results from the following google search site stackoverflow.com iphone open settings app is it possible to open Settings App using openURL Programmatically opening..
OpenGL Texture Coordinates in Pixel Space http://stackoverflow.com/questions/5879403/opengl-texture-coordinates-in-pixel-space 0 0 texcoords glEnableVertexAttribArray ATTRIB_TEXTUREPOSITON iphone objective c cocoa touch opengl es share improve this question This has been asked a few times but I don't have the links at hand so a quick and rough explanation. Let's say the texture is 8 pixels wide 0 1 2 3 4 5 6 7 ^ ^ ^ ^ ^ ^ ^ ^ ^ 0.0 1.0 0..
CADisplayLink OpenGL rendering breaks UIScrollView behaviour http://stackoverflow.com/questions/5944050/cadisplaylink-opengl-rendering-breaks-uiscrollview-behaviour OpenGL rendering breaks UIScrollView behaviour There are a few similar questions out there on SO links at end but none of them has allowed me to fix my problem so here goes I'm using OpenGL rendering to make an image tiling..
Locking the Fields in MFMailComposeViewController http://stackoverflow.com/questions/6284599/locking-the-fields-in-mfmailcomposeviewcontroller I have put together some code that sends the email with a nice please wait overlay. I have attached an image of what this looks like while its running for the few seconds it takes . Please note I take no credit for creating the SMTP framework. It was downloaded from the internet after searching for it forever. The zip file..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c still be valid for the caller of this function. return s autorelease I realize all of this is a bit confusing at some point though it will click. Here are a few references to get you going Apple's introduction to memory management. Cocoa Programming for Mac OS X 4th Edition by Aaron Hillegas a very well written book with..
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 to call that return void or other non objects you could enable compiler features to ignore the warning but it may be dangerous. I've seen Clang go through a few iterations of how it handles return values that aren't assigned to local variables. There's no reason that with ARC enabled that it can't retain and release the..
iPhone Data Usage Tracking/Monitoring http://stackoverflow.com/questions/7946699/iphone-data-usage-tracking-monitoring Data Usage Tracking Monitoring I've searched over this topic but found very few details which were helpful. With these details I've tried to cook some code as follows. Note Please compare the details shared in this post with other posts before..
Dispelling the UIImage imageNamed: FUD http://stackoverflow.com/questions/924740/dispelling-the-uiimage-imagenamed-fud is decode the image data from the source file which almost always significantly inflates the data size for example a screen sized PNG file might consume a few dozen KBs when compressed but consumes over half a MB decompressed width height 4 . By contrast imageWithContentsOfFile will decompress that image everytime the..
Add UIPickerView & a Button in Action sheet - How? http://stackoverflow.com/questions/1262574/add-uipickerview-a-button-in-action-sheet-how to customize the contents of an ActionSheet as it can lead to serious invalid context errors in iOS 7. I just spent a few hours working through this problem and ultimately decided to take a different approach. I replaced the call to show the..
http://stackoverflow.com/questions/1328638/placeholder-in-uitextview know how to do this iphone objective c cocoa touch uitextfield uitextview share improve this question I made a few minor modifications to bcd's solution to allow for initialization from a xib file text wrapping and to maintain background..
http://stackoverflow.com/questions/1388467/reading-epub-format which is an XML file one to define how everything is packaged up OEBPS a zip file of everything in the manifest plus a few extra files The specs look a bit daunting but actually once you've got the basics unzipping parsing XML down it's not particularly..
How does Apple know you are using private API? http://stackoverflow.com/questions/2842357/how-does-apple-know-you-are-using-private-api such as UIProgressHUD Ivars such as UITouch._phase which could be the cause of rejection of Three20 based apps last few months. 3. Listing Objective C selectors or strings Objective C selectors are stored in a special region of the binary and..
Is it true that one should not use NSLog() on production code? http://stackoverflow.com/questions/300673/is-it-true-that-one-should-not-use-nslog-on-production-code it true that one should not use NSLog on production code I was told this a few times in this very site but I wanted to make sure this is really the case. I was expecting to be able to sprinkle NSLog..
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received signal received When deploying the application to the device the program will quit after a few cycles with the following error Program received signal EXC_BAD_ACCESS . The program runs without any issue on the iPhone.. is that you have some error in your memory management. You said you've been working on iPhone development for a few weeks but not whether you are experienced with Objective C in general. If you've come from another background it can take.. big point of it. Remember anything you get from an allocation function usually the static alloc method but there are a few others or a copy method you own the memory too and must release it when you are done. But if you get something back from..
UITextView with Syntax Highlighting [duplicate] http://stackoverflow.com/questions/3642540/uitextview-with-syntax-highlighting it in the OmniUI framework. However this implementation is far from perfect. at least it was when I last checked a few months ago . They tried hard but still didn't manage to get to Apples perfection in user interaction. Apple must have invested.. hard but still didn't manage to get to Apples perfection in user interaction. Apple must have invested at least a few man years into doing only the UI interaction with text selection and editing. Nothing to be done at home and as it seems..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events to poll every X minutes to check the data counters. After much reading of the Background Execution documentation and a few trial apps I'd dismissed this as impossible without abusing the background APIs. Last week I found this application which..
http://stackoverflow.com/questions/554997/cancel-a-uiview-animation and I get the animation ended event I want to cancel it cut it short . Is this possible Googling around finds a few people asking the same question with no answers and one or two people speculating that it can't be done. iphone cocoa touch..
Opening the Settings app from another app http://stackoverflow.com/questions/5655674/opening-the-settings-app-from-another-app That is why it is able to the open the settings application. Not to be annoying or anything but here are just a few results from the following google search site stackoverflow.com iphone open settings app is it possible to open Settings..
OpenGL Texture Coordinates in Pixel Space http://stackoverflow.com/questions/5879403/opengl-texture-coordinates-in-pixel-space ATTRIB_TEXTUREPOSITON iphone objective c cocoa touch opengl es share improve this question This has been asked a few times but I don't have the links at hand so a quick and rough explanation. Let's say the texture is 8 pixels wide 0 1 2..
Locking the Fields in MFMailComposeViewController http://stackoverflow.com/questions/6284599/locking-the-fields-in-mfmailcomposeviewcontroller the email with a nice please wait overlay. I have attached an image of what this looks like while its running for the few seconds it takes . Please note I take no credit for creating the SMTP framework. It was downloaded from the internet after..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c function. return s autorelease I realize all of this is a bit confusing at some point though it will click. Here are a few references to get you going Apple's introduction to memory management. Cocoa Programming for Mac OS X 4th Edition by Aaron..
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 objects you could enable compiler features to ignore the warning but it may be dangerous. I've seen Clang go through a few iterations of how it handles return values that aren't assigned to local variables. There's no reason that with ARC enabled..
iPhone Data Usage Tracking/Monitoring http://stackoverflow.com/questions/7946699/iphone-data-usage-tracking-monitoring Data Usage Tracking Monitoring I've searched over this topic but found very few details which were helpful. With these details I've tried to cook some code as follows. Note Please compare the details..
Dispelling the UIImage imageNamed: FUD http://stackoverflow.com/questions/924740/dispelling-the-uiimage-imagenamed-fud file which almost always significantly inflates the data size for example a screen sized PNG file might consume a few dozen KBs when compressed but consumes over half a MB decompressed width height 4 . By contrast imageWithContentsOfFile..
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