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2014/10/15 ¤U¤È 10:10:29
iphone Programming Glossary: intHow can I upload a photo to a server with the iPhone? http://stackoverflow.com/questions/125306/how-can-i-upload-a-photo-to-a-server-with-the-iphone somewhere. Thanks iphone cocoa touch cocoa networking share improve this question Header @interface EPUploader NSObject NSURL serverURL NSString filePath id delegate SEL doneSelector SEL errorSelector.. @ 0xKhTmLbOuNdArY static NSString const FORM_FLE_INPUT @ uploaded #define ASSERT x NSAssert x @ @interface EPUploader Private void upload NSURLRequest postRequestWithURL NSURL url boundry NSString boundry.. uLong destSize data length 1.001 12 NSMutableData destData NSMutableData dataWithLength destSize int error compress destData mutableBytes destSize data bytes data length if error Z_OK NSLog @ s self..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone Encryption for an NSString on the iPhone Can anybody point me in the right direction to be able to encrypt a string returning another string with the encrypted.. If you include their code for the NSData category you can write something like this Note The printf calls are only for demonstrating the state of the data at various points in a real application it wouldn't.. like this Note The printf calls are only for demonstrating the state of the data at various points in a real application it wouldn't make sense to print such values. int main int argc const char argv..
How to get the RGB values for a pixel on an image on the iphone http://stackoverflow.com/questions/144250/how-to-get-the-rgb-values-for-a-pixel-on-an-image-on-the-iphone implement something equivalent to the 'eyedropper' tool in photoshop where you can touch a point on the image and capture the RGB values for the pixel in question to determine and match its color... its color. Getting the UIImage is the easy part but is there a way to convert the UIImage data into a bitmap representation in which I could extract this information for a given pixel A working code.. said on this page that can be found at the bottom of this post. I am editing the post at this point however to post what I propose is at least for my requirements which include modifying pixel data a..
Detecting which UIButton was pressed in a UITableView http://stackoverflow.com/questions/1802707/detecting-which-uibutton-was-pressed-in-a-uitableview return cell void buttonPressedAction id sender UIButton button UIButton sender int row button.tag What's important to note is that I can't set the tag in the creation of the cell since.. retrieved and index path is calculated from that coordinate void checkButtonTapped id sender CGPoint buttonPosition sender convertPoint CGPointZero toView self.tableView NSIndexPath indexPath self.tableView.. from that coordinate void checkButtonTapped id sender CGPoint buttonPosition sender convertPoint CGPointZero toView self.tableView NSIndexPath indexPath self.tableView indexPathForRowAtPoint buttonPosition..
How to store custom objects in NSUserDefaults http://stackoverflow.com/questions/2315948/how-to-store-custom-objects-in-nsuserdefaults that apparently NSUserDefaults only stores some types of information. So how an I get my objects into NSUSerDefaults I read that there should be a way to to encode my custom object and then put it in but.. basic and I'm just too tired but we'll see. Here is the implementation of my Custom class Player @interface Player NSObject NSString name NSNumber life Log of player's life Getting functions return the.. NSString name NSNumber life Log of player's life Getting functions return the info NSString name int life id init These are the setters void setName NSString input string void setLife NSNumber input number..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c process for creating them you simply define a class that implements the delegate methods you're interested in. Though with delegates that use a formal protocol you must declare your delegate to implement.. on NSObject. For example continuing the example above this is paraphrased from NSWindow.h @interface NSObject NSWindowNotifications void windowDidMove NSNotification notification ... other methods.. void windowDidMove NSNotification notification ... other methods here @end This is analogous to an interface or abstract base class as it creates a special type for your delegate NSWindowNotifications in..
How can I programmatically get the MAC address of an iphone http://stackoverflow.com/questions/677530/how-can-i-programmatically-get-the-mac-address-of-an-iphone things up. IPAddress.h IPAddress.c And to use it InitAddresses GetIPAddresses GetHWAddresses int i NSString deviceIP nil for i 0 i MAXADDRS i static unsigned long localHost 0x7F000001 127.0.0.1 unsigned..
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 selector Explanation What's going on here is you're asking the controller for the C function pointer for the method corresponding to the controller. All objects respond to methodForSelector and it works.. C runtime methods so you could do this directly with the runtime API as well . These function pointers are called IMP s and are simple typedef ed function pointers id IMP id SEL ... 1 . This may be close.. API as well . These function pointers are called IMP s and are simple typedef ed function pointers id IMP id SEL ... 1 . This may be close to the actual method signature of the method but will not..
iPhone Data Usage Tracking/Monitoring http://stackoverflow.com/questions/7946699/iphone-data-usage-tracking-monitoring posts before marking this as DUPLICATE and not just by the subject. NSArray getDataCountersForType int type BOOL success struct ifaddrs addrs nil const struct ifaddrs cursor nil const struct sockaddr_dl.. ifaddrs cursor nil const struct sockaddr_dl dlAddr nil const struct if_data networkStatisc nil int dataSent 0 int dataReceived 0 success getifaddrs addrs 0 if success cursor addrs while cursor NULL .. nil const struct sockaddr_dl dlAddr nil const struct if_data networkStatisc nil int dataSent 0 int dataReceived 0 success getifaddrs addrs 0 if success cursor addrs while cursor NULL if cursor ifa_addr..
How can I upload a photo to a server with the iPhone? http://stackoverflow.com/questions/125306/how-can-i-upload-a-photo-to-a-server-with-the-iphone a photo to a server with Cocoa in Xcode I suppose I use NSUrl somewhere. Thanks iphone cocoa touch cocoa networking share improve this question Header @interface EPUploader NSObject NSURL serverURL NSString filePath id delegate SEL doneSelector SEL errorSelector BOOL uploadDidSucceed id initWithURL NSURL serverURL.. EPUploader.h #import zlib.h static NSString const BOUNDRY @ 0xKhTmLbOuNdArY static NSString const FORM_FLE_INPUT @ uploaded #define ASSERT x NSAssert x @ @interface EPUploader Private void upload NSURLRequest postRequestWithURL NSURL url boundry NSString boundry data NSData data NSData compress NSData data void uploadSucceeded.. doc says destSize must be 1 12 bytes greater than source. uLong destSize data length 1.001 12 NSMutableData destData NSMutableData dataWithLength destSize int error compress destData mutableBytes destSize data bytes data length if error Z_OK NSLog @ s self 0x p zlib error on compress d n __func__ self error return..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone Encryption for an NSString on the iPhone Can anybody point me in the right direction to be able to encrypt a string returning another string with the encrypted data I've been trying with AES256 encryption. I want to write.. code which works for me and seems a bit more straightforward. If you include their code for the NSData category you can write something like this Note The printf calls are only for demonstrating the state of the data at various points in a real application it wouldn't make sense to print such values. int main int argc const.. their code for the NSData category you can write something like this Note The printf calls are only for demonstrating the state of the data at various points in a real application it wouldn't make sense to print such values. int main int argc const char argv NSAutoreleasePool pool NSAutoreleasePool alloc init NSString..
How to get the RGB values for a pixel on an image on the iphone http://stackoverflow.com/questions/144250/how-to-get-the-rgb-values-for-a-pixel-on-an-image-on-the-iphone I am writing an iPhone application and need to essentially implement something equivalent to the 'eyedropper' tool in photoshop where you can touch a point on the image and capture the RGB values for the pixel in question to determine and match its color. Getting the UIImage is the easy part but is there a way to convert.. the RGB values for the pixel in question to determine and match its color. Getting the UIImage is the easy part but is there a way to convert the UIImage data into a bitmap representation in which I could extract this information for a given pixel A working code sample would be most appreciated and note that I am not concerned.. with a consolidation and small addition to what had been said on this page that can be found at the bottom of this post. I am editing the post at this point however to post what I propose is at least for my requirements which include modifying pixel data a better method as it provides writable data whereas as I understand..
Detecting which UIButton was pressed in a UITableView http://stackoverflow.com/questions/1802707/detecting-which-uibutton-was-pressed-in-a-uitableview setTag indexPath.row button setTitle @ Edit forState UIControlStateNormal return cell void buttonPressedAction id sender UIButton button UIButton sender int row button.tag What's important to note is that I can't set the tag in the creation of the cell since the cell might be dequeued instead. It feels very dirty. There.. Then in touch handler touch coordinate retrieved and index path is calculated from that coordinate void checkButtonTapped id sender CGPoint buttonPosition sender convertPoint CGPointZero toView self.tableView NSIndexPath indexPath self.tableView indexPathForRowAtPoint buttonPosition if indexPath nil..
How to store custom objects in NSUserDefaults http://stackoverflow.com/questions/2315948/how-to-store-custom-objects-in-nsuserdefaults custom class Player in the NSUserDefaults. Now I've read up that apparently NSUserDefaults only stores some types of information. So how an I get my objects into NSUSerDefaults I read that there should be a way to to encode my custom object and then put it in but I'm not sure how to implement it help would be appreciated.. it doesn't give any errors. Perhaps I'm missing something basic and I'm just too tired but we'll see. Here is the implementation of my Custom class Player @interface Player NSObject NSString name NSNumber life Log of player's life Getting functions return the info NSString name int life id init These are the setters void.. of my Custom class Player @interface Player NSObject NSString name NSNumber life Log of player's life Getting functions return the info NSString name int life id init These are the setters void setName NSString input string void setLife NSNumber input number @end Implementation File #import Player.h @implementation..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c has been assigned as a delegate of another. There's no special process for creating them you simply define a class that implements the delegate methods you're interested in. Though with delegates that use a formal protocol you must declare your delegate to implement that protocol see below. For example suppose you have an.. Informal Protocol This can be done as NSWindow does in a category on NSObject. For example continuing the example above this is paraphrased from NSWindow.h @interface NSObject NSWindowNotifications void windowDidMove NSNotification notification ... other methods here @end You would then use respondsToSelector as described.. this @protocol NSWindowNotifications NSObject @optional void windowDidMove NSNotification notification ... other methods here @end This is analogous to an interface or abstract base class as it creates a special type for your delegate NSWindowNotifications in this case. Delegate implementors would have to adopt this protocol..
How can I programmatically get the MAC address of an iphone http://stackoverflow.com/questions/677530/how-can-i-programmatically-get-the-mac-address-of-an-iphone a while ago. Originally from here I modified it a bit and cleaned things up. IPAddress.h IPAddress.c And to use it InitAddresses GetIPAddresses GetHWAddresses int i NSString deviceIP nil for i 0 i MAXADDRS i static unsigned long localHost 0x7F000001 127.0.0.1 unsigned long theAddr theAddr ip_addrs i if theAddr 0 break if..
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 void id SEL _controller methodForSelector selector _controller selector Explanation What's going on here is you're asking the controller for the C function pointer for the method corresponding to the controller. All objects respond to methodForSelector and it works through some lower level Objective C runtime methods so.. and it works through some lower level Objective C runtime methods so you could do this directly with the runtime API as well . These function pointers are called IMP s and are simple typedef ed function pointers id IMP id SEL ... 1 . This may be close to the actual method signature of the method but will not.. C runtime methods so you could do this directly with the runtime API as well . These function pointers are called IMP s and are simple typedef ed function pointers id IMP id SEL ... 1 . This may be close to the actual method signature of the method but will not always match exactly. Once you have the IMP you need to cast..
iPhone Data Usage Tracking/Monitoring http://stackoverflow.com/questions/7946699/iphone-data-usage-tracking-monitoring Please compare the details shared in this post with other posts before marking this as DUPLICATE and not just by the subject. NSArray getDataCountersForType int type BOOL success struct ifaddrs addrs nil const struct ifaddrs cursor nil const struct sockaddr_dl dlAddr nil const struct if_data networkStatisc nil int dataSent.. int type BOOL success struct ifaddrs addrs nil const struct ifaddrs cursor nil const struct sockaddr_dl dlAddr nil const struct if_data networkStatisc nil int dataSent 0 int dataReceived 0 success getifaddrs addrs 0 if success cursor addrs while cursor NULL if cursor ifa_addr sa_family AF_LINK dlAddr const struct sockaddr_dl.. success struct ifaddrs addrs nil const struct ifaddrs cursor nil const struct sockaddr_dl dlAddr nil const struct if_data networkStatisc nil int dataSent 0 int dataReceived 0 success getifaddrs addrs 0 if success cursor addrs while cursor NULL if cursor ifa_addr sa_family AF_LINK dlAddr const struct sockaddr_dl cursor..
How can I upload a photo to a server with the iPhone? http://stackoverflow.com/questions/125306/how-can-i-upload-a-photo-to-a-server-with-the-iphone I suppose I use NSUrl somewhere. Thanks iphone cocoa touch cocoa networking share improve this question Header @interface EPUploader NSObject NSURL serverURL NSString filePath id delegate SEL doneSelector SEL errorSelector BOOL uploadDidSucceed.. const BOUNDRY @ 0xKhTmLbOuNdArY static NSString const FORM_FLE_INPUT @ uploaded #define ASSERT x NSAssert x @ @interface EPUploader Private void upload NSURLRequest postRequestWithURL NSURL url boundry NSString boundry data NSData data.. greater than source. uLong destSize data length 1.001 12 NSMutableData destData NSMutableData dataWithLength destSize int error compress destData mutableBytes destSize data bytes data length if error Z_OK NSLog @ s self 0x p zlib error on..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone Encryption for an NSString on the iPhone Can anybody point me in the right direction to be able to encrypt a string returning another string with the encrypted data I've been trying.. more straightforward. If you include their code for the NSData category you can write something like this Note The printf calls are only for demonstrating the state of the data at various points in a real application it wouldn't make sense to.. you can write something like this Note The printf calls are only for demonstrating the state of the data at various points in a real application it wouldn't make sense to print such values. int main int argc const char argv NSAutoreleasePool..
How to get the RGB values for a pixel on an image on the iphone http://stackoverflow.com/questions/144250/how-to-get-the-rgb-values-for-a-pixel-on-an-image-on-the-iphone and need to essentially implement something equivalent to the 'eyedropper' tool in photoshop where you can touch a point on the image and capture the RGB values for the pixel in question to determine and match its color. Getting the UIImage.. to determine and match its color. Getting the UIImage is the easy part but is there a way to convert the UIImage data into a bitmap representation in which I could extract this information for a given pixel A working code sample would be most.. to what had been said on this page that can be found at the bottom of this post. I am editing the post at this point however to post what I propose is at least for my requirements which include modifying pixel data a better method as it..
Detecting which UIButton was pressed in a UITableView http://stackoverflow.com/questions/1802707/detecting-which-uibutton-was-pressed-in-a-uitableview @ Edit forState UIControlStateNormal return cell void buttonPressedAction id sender UIButton button UIButton sender int row button.tag What's important to note is that I can't set the tag in the creation of the cell since the cell might be.. touch coordinate retrieved and index path is calculated from that coordinate void checkButtonTapped id sender CGPoint buttonPosition sender convertPoint CGPointZero toView self.tableView NSIndexPath indexPath self.tableView indexPathForRowAtPoint.. index path is calculated from that coordinate void checkButtonTapped id sender CGPoint buttonPosition sender convertPoint CGPointZero toView self.tableView NSIndexPath indexPath self.tableView indexPathForRowAtPoint buttonPosition if indexPath..
How to store custom objects in NSUserDefaults http://stackoverflow.com/questions/2315948/how-to-store-custom-objects-in-nsuserdefaults Now I've read up that apparently NSUserDefaults only stores some types of information. So how an I get my objects into NSUSerDefaults I read that there should be a way to to encode my custom object and then put it in but I'm not sure how.. missing something basic and I'm just too tired but we'll see. Here is the implementation of my Custom class Player @interface Player NSObject NSString name NSNumber life Log of player's life Getting functions return the info NSString name int.. Player NSObject NSString name NSNumber life Log of player's life Getting functions return the info NSString name int life id init These are the setters void setName NSString input string void setLife NSNumber input number @end Implementation..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c There's no special process for creating them you simply define a class that implements the delegate methods you're interested in. Though with delegates that use a formal protocol you must declare your delegate to implement that protocol see.. NSWindow does in a category on NSObject. For example continuing the example above this is paraphrased from NSWindow.h @interface NSObject NSWindowNotifications void windowDidMove NSNotification notification ... other methods here @end You would.. NSObject @optional void windowDidMove NSNotification notification ... other methods here @end This is analogous to an interface or abstract base class as it creates a special type for your delegate NSWindowNotifications in this case. Delegate..
How can I programmatically get the MAC address of an iphone http://stackoverflow.com/questions/677530/how-can-i-programmatically-get-the-mac-address-of-an-iphone it a bit and cleaned things up. IPAddress.h IPAddress.c And to use it InitAddresses GetIPAddresses GetHWAddresses int i NSString deviceIP nil for i 0 i MAXADDRS i static unsigned long localHost 0x7F000001 127.0.0.1 unsigned long theAddr theAddr..
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 selector _controller selector Explanation What's going on here is you're asking the controller for the C function pointer for the method corresponding to the controller. All objects respond to methodForSelector and it works through some lower.. lower level Objective C runtime methods so you could do this directly with the runtime API as well . These function pointers are called IMP s and are simple typedef ed function pointers id IMP id SEL ... 1 . This may be close to the actual method.. directly with the runtime API as well . These function pointers are called IMP s and are simple typedef ed function pointers id IMP id SEL ... 1 . This may be close to the actual method signature of the method but will not always match exactly...
iPhone Data Usage Tracking/Monitoring http://stackoverflow.com/questions/7946699/iphone-data-usage-tracking-monitoring post with other posts before marking this as DUPLICATE and not just by the subject. NSArray getDataCountersForType int type BOOL success struct ifaddrs addrs nil const struct ifaddrs cursor nil const struct sockaddr_dl dlAddr nil const struct.. addrs nil const struct ifaddrs cursor nil const struct sockaddr_dl dlAddr nil const struct if_data networkStatisc nil int dataSent 0 int dataReceived 0 success getifaddrs addrs 0 if success cursor addrs while cursor NULL if cursor ifa_addr sa_family.. struct ifaddrs cursor nil const struct sockaddr_dl dlAddr nil const struct if_data networkStatisc nil int dataSent 0 int dataReceived 0 success getifaddrs addrs 0 if success cursor addrs while cursor NULL if cursor ifa_addr sa_family AF_LINK..
SQLlite3 Update statment has no effect http://stackoverflow.com/questions/6622582/sqllite3-update-statment-has-no-effect were created outside of these implementations and where the primary keys were defined as an integer type but not as INTEGER verbatim that is they were defined as INT or INT16 or INT32 etc. INTEGER PRIMARY KEY in mothership SQLite is an alias.. and where the primary keys were defined as an integer type but not as INTEGER verbatim that is they were defined as INT or INT16 or INT32 etc. INTEGER PRIMARY KEY in mothership SQLite is an alias for the rowid. INT PRIMARY KEY in mothership.. where the primary keys were defined as an integer type but not as INTEGER verbatim that is they were defined as INT or INT16 or INT32 etc. INTEGER PRIMARY KEY in mothership SQLite is an alias for the rowid. INT PRIMARY KEY in mothership SQLite..
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