2014/10/15 下午 10:14:27

iphone Programming Glossary: statements

Difference between objectForKey and valueForKey?

http://stackoverflow.com/questions/1062183/difference-between-objectforkey-and-valueforkey

@ accountNumber NSNumber anotherAccountNumber newAccount valueForKey @ accountNumber Those are equivalent sets of statements. I know you're thinking wow but sarcastically. KVC doesn't look all that useful. In fact it looks wordy . But when you want..

Weird Switch error in Obj-C

http://stackoverflow.com/questions/1180550/weird-switch-error-in-obj-c

C only allowed you to declare block local variables at the start of a block which was then followed by various statements. C99 changed things so you could freely intermix variable declarations and statements. In the context of the C99 BNF grammar.. was then followed by various statements. C99 changed things so you could freely intermix variable declarations and statements. In the context of the C99 BNF grammar a variable declaration is a declaration and a statement is a statement . A statement.. a statement . The problem lies in the way a labeled statement a goto label case label or default essentially the ... statements is defined which is loosely defined ... zero or more statements . It is not as one might intuitively expect zero or more..

Removing text shadow in UITableViewCell when it's selected

http://stackoverflow.com/questions/1184014/removing-text-shadow-in-uitableviewcell-when-its-selected

overriding the tableView willDisplayCell forRowAtIndexPath delegate method as Kevin suggested below. From logging statements I put in this delegate method is only called just before a cell is drawn by the time a cell is touched it is already too..

How to detect iPhone 5 (widescreen devices)?

http://stackoverflow.com/questions/12446990/how-to-detect-iphone-5-widescreen-devices

when comparing floating points as pointed in the comments by H2CO3. So from now on you can use it in standard if else statements if IS_IPHONE_5 else Edit Better detection As stated by some people this does only detect a widescreen not an actual iPhone..

Logging to a file on the iPhone

http://stackoverflow.com/questions/202299/logging-to-a-file-on-the-iphone

to a file on the iPhone What would be the best way to write log statements to a file or database in an iPhone application Ideally NSLog output could be redirected to a file using freopen but I've..

Warning: control reaches end of non-void function - iPhone

http://stackoverflow.com/questions/2440337/warning-control-reaches-end-of-non-void-function-iphone

and crash which might help you track down errors. You might also look at modifying this method and replacing the if statements with a switch case tree. With a switch case tree you can very easily add new sections and rearrange their order in a UITableView..

Displaying ppt, doc, and xls in UIWebView doesn't work but pdf does

http://stackoverflow.com/questions/2520137/displaying-ppt-doc-and-xls-in-uiwebview-doesnt-work-but-pdf-does

my 'data' is correct. PDF and TXT files work. When the UIWebView displays PPT DOC or XLS files it's blank. I put NSLOG statements in my UIWebViewDelegate calls. shouldStartLoadWithRequest NSMutableURLRequest about blank navType 5 webViewDidStartLoad..

Is MonoTouch now banned on the iPhone? [closed]

http://stackoverflow.com/questions/2604033/is-monotouch-now-banned-on-the-iphone

improve this question Update This changed recently . MonoTouch should no longer conflict with the agreement. Any statements below are purely historical Yes it seems pretty clear from their license agreement now that if the original application..

SQLite3 database doesn't actually insert data - iPhone

http://stackoverflow.com/questions/2785211/sqlite3-database-doesnt-actually-insert-data-iphone

runs meaning there are no errors with the query. But still nothing is added to the database. I've tried both prepared statements and the simpler sqlite3_exec and it's the same result. I know my database is being loaded because the info for the tableview.. data. ' s' sqlite3_errmsg db Database closeDatabase db Again no errors have been thrown. The prepare and step statements return SQLITE_OK and SQLITE_DONE respectively yet nothing happens. Any help is appreciated iphone objective c sqlite3 ..

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

functionality. Here's the one I use it includes the file name and line number to make it easier to track down log statements. #define DEBUG_MODE #ifdef DEBUG_MODE #define DebugLog s ... NSLog @ p @ d @ self NSString stringWithUTF8String __FILE__..

Building with LLVM and any optimization causes app to crash on startup

http://stackoverflow.com/questions/5490432/building-with-llvm-and-any-optimization-causes-app-to-crash-on-startup

symbolicate correctly since it doesn't know which library the crash happened in. The device console shows some NSLog statements that our app makes at startup then the first screen's UI is loaded and drawn and after that the crash happens. Building..

iPhone - when is dealloc for a viewcontroller called?

http://stackoverflow.com/questions/577635/iphone-when-is-dealloc-for-a-viewcontroller-called

between views. When I move back and forth in views the memory used by my app keeps on increasing. On placing NSLog statements in the dealloc method of all viewcontrollers I noticed it was being called for only some viewcontrollers and not all that..

Objective C alloc/release error

http://stackoverflow.com/questions/6928028/objective-c-alloc-release-error

this question This looks wrong doc release Why are you releasing an object managed by a property In your @synthesize statements change them to @synthesize doc doc_ @synthesize xmlBody xmlBody_ Then fix all the resulting errors to go through the property..

tabbar item image and selectedImage

http://stackoverflow.com/questions/8939399/tabbar-item-image-and-selectedimage

images as they'll just be ignored. Instead set their tags to match up with the images you've specified in your switch statements. Note that if you have multiple tab bars in your app and you don't want them to all be overridden in this way you can define..