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2014/10/15 ¤U¤È 10:04:48
iphone Programming Glossary: bytesHow 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 NSData data IN if data data length 0 return nil zlib compress doc says destSize must be 1 12 bytes greater than source. uLong destSize data length 1.001 12 NSMutableData destData NSMutableData dataWithLength.. 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..
How to Rotate a UIImage 90 degrees? http://stackoverflow.com/questions/1315251/how-to-rotate-a-uiimage-90-degrees as the current size of the UIImage but I get an error Error CGBitmapContextCreate invalid data bytes row should be at least 1708 for 8 integer bits component 3 components kCGImageAlphaPremultipliedLast...
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone
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 #define RGBA 4 #define RGBA_8_BIT 8 In my UIImage subclass I declared instance variables size_t bytesPerRow size_t byteCount size_t pixelCount CGContextRef context CGColorSpaceRef colorSpace UInt8 pixelByteData.. CGContextRef context CGColorSpaceRef colorSpace UInt8 pixelByteData A pointer to an array of RGBA bytes in memory RPVW_RGBAPixel pixelData The pixel struct with alpha in this version typedef struct RGBAPixel.. bits each of red green blue and alpha. self setBytesPerRow self.size.width RGBA self setByteCount bytesPerRow self.size.height self setPixelCount self.size.width self.size.height Create RGB color space self..
iPhone sending POST with NSURLConnection http://stackoverflow.com/questions/2071788/iphone-sending-post-with-nsurlconnection problems with sending POST data to a PHP script with NSURLConnection. This is my code const char bytes NSString stringWithFormat @ xml version 1.0 n mydata @ mydata data UTF8String NSURL url NSURL URLWithString.. requestWithURL url request setHTTPMethod @ POST request setHTTPBody NSData dataWithBytes bytes length strlen bytes NSURLResponse response NSError err NSData responseData NSURLConnection sendSynchronousRequest.. url request setHTTPMethod @ POST request setHTTPBody NSData dataWithBytes bytes length strlen bytes NSURLResponse response NSError err NSData responseData NSURLConnection sendSynchronousRequest request..
http://stackoverflow.com/questions/412982/iphone-unzip-code but you'd have to parse the header and use other routines. To check have a look at the first two bytes of the file. If it is 'PK' it's WinZip if it's 0x1F8B it's gZip. Because this is iPhone specific have..
iOS SDK - Programmatically generate a PDF file http://stackoverflow.com/questions/4362734/ios-sdk-programmatically-generate-a-pdf-file imageView.image if pngData nil HPDF_Image image HPDF_LoadPngImageFromMem _pdf pngData bytes pngData length if image NULL CGRect destRect self rectToPDF imageView.frame float x destRect.origin.x..
What's the easiest way to resize/optimize an image size with the iPhone SDK? http://stackoverflow.com/questions/612131/whats-the-easiest-way-to-resize-optimize-an-image-size-with-the-iphone-sdk UIImageJPEGRepresentation theImage 0.6 This creates an NSData instance containing the raw bytes for a JPEG image at a 60 quality setting. The contents of that NSData instance can then be written to..
iCloud basics and code sample [closed] http://stackoverflow.com/questions/7795629/icloud-basics-and-code-sample typeName if contents length 0 self.documentText NSString alloc initWithBytes contents bytes length contents length encoding NSUTF8StringEncoding else self.documentText @ NSLog @ UIDocument Loaded..
Programmatically retrieve memory usage on iPhone http://stackoverflow.com/questions/787160/programmatically-retrieve-memory-usage-on-iphone I'm not interested in those only to know if it's possible to write some code and get the amount of bytes being used and report it via NSLog. Thanks. iphone objective c cocoa touch share improve this question.. NSLog. Thanks. iphone objective c cocoa touch share improve this question To get the actual bytes of memory that your application is using you can do something like the example below. However you really.. TASK_BASIC_INFO task_info_t info size if kerr KERN_SUCCESS NSLog @ Memory in use in bytes u info.resident_size else NSLog @ Error with task_info s mach_error_string kerr There is also a field..
iPhone Data Usage Tracking/Monitoring http://stackoverflow.com/questions/7946699/iphone-data-usage-tracking-monitoring dataReceived networkStatisc ifi_ipackets else if type WWAN dataSent networkStatisc ifi_obytes dataReceived networkStatisc ifi_ibytes cursor cursor ifa_next freeifaddrs addrs return NSArray.. else if type WWAN dataSent networkStatisc ifi_obytes dataReceived networkStatisc ifi_ibytes cursor cursor ifa_next freeifaddrs addrs return NSArray arrayWithObjects NSNumber numberWithInt.. and not my application alone . Now if I use internet through WiFi or through 3G I get the the data bytes only in ifi_obytes sent and ifi_ibytes received but I think I should get WiFi usage in ifi_opackets..
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 data as a NSData object. Side effects None NSData compress NSData data IN if data data length 0 return nil zlib compress 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 .. 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 nil destData setLength destSize return destData Uploader..
How to Rotate a UIImage 90 degrees? http://stackoverflow.com/questions/1315251/how-to-rotate-a-uiimage-90-degrees intended to resize a UIImage to do this. I set a target size as the current size of the UIImage but I get an error Error CGBitmapContextCreate invalid data bytes row should be at least 1708 for 8 integer bits component 3 components kCGImageAlphaPremultipliedLast. I don't get an error whenever I provide a SMALLER size as..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone
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 data . Method 1 Writable Pixel Information I defined constants #define RGBA 4 #define RGBA_8_BIT 8 In my UIImage subclass I declared instance variables size_t bytesPerRow size_t byteCount size_t pixelCount CGContextRef context CGColorSpaceRef colorSpace UInt8 pixelByteData A pointer to an array of RGBA bytes in memory RPVW_RGBAPixel.. size_t bytesPerRow size_t byteCount size_t pixelCount CGContextRef context CGColorSpaceRef colorSpace UInt8 pixelByteData A pointer to an array of RGBA bytes in memory RPVW_RGBAPixel pixelData The pixel struct with alpha in this version typedef struct RGBAPixel byte red byte green byte blue byte alpha RGBAPixel Bitmap.. bitmap NSLog @ Returning bitmap representation of UIImage. 8 bits each of red green blue and alpha. self setBytesPerRow self.size.width RGBA self setByteCount bytesPerRow self.size.height self setPixelCount self.size.width self.size.height Create RGB color space self setColorSpace CGColorSpaceCreateDeviceRGB if colorSpace ..
iPhone sending POST with NSURLConnection http://stackoverflow.com/questions/2071788/iphone-sending-post-with-nsurlconnection sending POST with NSURLConnection I'm having some problems with sending POST data to a PHP script with NSURLConnection. This is my code const char bytes NSString stringWithFormat @ xml version 1.0 n mydata @ mydata data UTF8String NSURL url NSURL URLWithString @ http myurl.com script.php NSMutableURLRequest request.. myurl.com script.php NSMutableURLRequest request NSMutableURLRequest requestWithURL url request setHTTPMethod @ POST request setHTTPBody NSData dataWithBytes bytes length strlen bytes NSURLResponse response NSError err NSData responseData NSURLConnection sendSynchronousRequest request returningResponse response error err NSLog.. NSMutableURLRequest request NSMutableURLRequest requestWithURL url request setHTTPMethod @ POST request setHTTPBody NSData dataWithBytes bytes length strlen bytes NSURLResponse response NSError err NSData responseData NSURLConnection sendSynchronousRequest request returningResponse response error err NSLog @ responseData..
http://stackoverflow.com/questions/412982/iphone-unzip-code created by WinZip. Those can also be decompressed using zLib but you'd have to parse the header and use other routines. To check have a look at the first two bytes of the file. If it is 'PK' it's WinZip if it's 0x1F8B it's gZip. Because this is iPhone specific have a look at this iPhone SDK forum discussion where miniZip is..
iOS SDK - Programmatically generate a PDF file http://stackoverflow.com/questions/4362734/ios-sdk-programmatically-generate-a-pdf-file UIImageView imageView NSData pngData UIImagePNGRepresentation imageView.image if pngData nil HPDF_Image image HPDF_LoadPngImageFromMem _pdf pngData bytes pngData length if image NULL CGRect destRect self rectToPDF imageView.frame float x destRect.origin.x float y destRect.origin.y destRect.size.height float width..
What's the easiest way to resize/optimize an image size with the iPhone SDK? http://stackoverflow.com/questions/612131/whats-the-easiest-way-to-resize-optimize-an-image-size-with-the-iphone-sdk
iCloud basics and code sample [closed] http://stackoverflow.com/questions/7795629/icloud-basics-and-code-sample @ UIDocument loadFromContents state d typeName @ self.documentState typeName if contents length 0 self.documentText NSString alloc initWithBytes contents bytes length contents length encoding NSUTF8StringEncoding else self.documentText @ NSLog @ UIDocument Loaded the following text from the cloud @ self.documentText update..
Programmatically retrieve memory usage on iPhone http://stackoverflow.com/questions/787160/programmatically-retrieve-memory-usage-on-iphone programmatically. Yes I'm aware about ObjectAlloc Leaks. I'm not interested in those only to know if it's possible to write some code and get the amount of bytes being used and report it via NSLog. Thanks. iphone objective c cocoa touch share improve this question To get the actual bytes of memory that your application.. code and get the amount of bytes being used and report it via NSLog. Thanks. iphone objective c cocoa touch share improve this question To get the actual bytes of memory that your application is using you can do something like the example below. However you really should become familiar with the various profiling tools.. size sizeof info kern_return_t kerr task_info mach_task_self TASK_BASIC_INFO task_info_t info size if kerr KERN_SUCCESS NSLog @ Memory in use in bytes u info.resident_size else NSLog @ Error with task_info s mach_error_string kerr There is also a field in the structure info.virtual_size which will give you the..
iPhone Data Usage Tracking/Monitoring http://stackoverflow.com/questions/7946699/iphone-data-usage-tracking-monitoring ifa_data if type WiFi dataSent networkStatisc ifi_opackets dataReceived networkStatisc ifi_ipackets else if type WWAN dataSent networkStatisc ifi_obytes dataReceived networkStatisc ifi_ibytes cursor cursor ifa_next freeifaddrs addrs return NSArray arrayWithObjects NSNumber numberWithInt dataSent NSNumber numberWithInt.. ifi_opackets dataReceived networkStatisc ifi_ipackets else if type WWAN dataSent networkStatisc ifi_obytes dataReceived networkStatisc ifi_ibytes cursor cursor ifa_next freeifaddrs addrs return NSArray arrayWithObjects NSNumber numberWithInt dataSent NSNumber numberWithInt dataReceived nil This code.. collects information of internet usage of an iPhone device and not my application alone . Now if I use internet through WiFi or through 3G I get the the data bytes only in ifi_obytes sent and ifi_ibytes received but I think I should get WiFi usage in ifi_opackets and ifi_ipackets . Also wanted to add that if I'm connected..
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 None NSData compress NSData data IN if data data length 0 return nil zlib compress doc says destSize must be 1 12 bytes greater than source. uLong destSize data length 1.001 12 NSMutableData destData NSMutableData dataWithLength destSize int.. 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 nil destData setLength..
How to Rotate a UIImage 90 degrees? http://stackoverflow.com/questions/1315251/how-to-rotate-a-uiimage-90-degrees I set a target size as the current size of the UIImage but I get an error Error CGBitmapContextCreate invalid data bytes row should be at least 1708 for 8 integer bits component 3 components kCGImageAlphaPremultipliedLast. I don't get an error..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone
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 defined constants #define RGBA 4 #define RGBA_8_BIT 8 In my UIImage subclass I declared instance variables size_t bytesPerRow size_t byteCount size_t pixelCount CGContextRef context CGColorSpaceRef colorSpace UInt8 pixelByteData A pointer to.. size_t pixelCount CGContextRef context CGColorSpaceRef colorSpace UInt8 pixelByteData A pointer to an array of RGBA bytes in memory RPVW_RGBAPixel pixelData The pixel struct with alpha in this version typedef struct RGBAPixel byte red byte green.. of UIImage. 8 bits each of red green blue and alpha. self setBytesPerRow self.size.width RGBA self setByteCount bytesPerRow self.size.height self setPixelCount self.size.width self.size.height Create RGB color space self setColorSpace CGColorSpaceCreateDeviceRGB..
iPhone sending POST with NSURLConnection http://stackoverflow.com/questions/2071788/iphone-sending-post-with-nsurlconnection I'm having some problems with sending POST data to a PHP script with NSURLConnection. This is my code const char bytes NSString stringWithFormat @ xml version 1.0 n mydata @ mydata data UTF8String NSURL url NSURL URLWithString @ http myurl.com.. request NSMutableURLRequest requestWithURL url request setHTTPMethod @ POST request setHTTPBody NSData dataWithBytes bytes length strlen bytes NSURLResponse response NSError err NSData responseData NSURLConnection sendSynchronousRequest request.. requestWithURL url request setHTTPMethod @ POST request setHTTPBody NSData dataWithBytes bytes length strlen bytes NSURLResponse response NSError err NSData responseData NSURLConnection sendSynchronousRequest request returningResponse..
http://stackoverflow.com/questions/412982/iphone-unzip-code using zLib but you'd have to parse the header and use other routines. To check have a look at the first two bytes of the file. If it is 'PK' it's WinZip if it's 0x1F8B it's gZip. Because this is iPhone specific have a look at this iPhone..
iOS SDK - Programmatically generate a PDF file http://stackoverflow.com/questions/4362734/ios-sdk-programmatically-generate-a-pdf-file pngData UIImagePNGRepresentation imageView.image if pngData nil HPDF_Image image HPDF_LoadPngImageFromMem _pdf pngData bytes pngData length if image NULL CGRect destRect self rectToPDF imageView.frame float x destRect.origin.x float y destRect.origin.y..
What's the easiest way to resize/optimize an image size with the iPhone SDK? http://stackoverflow.com/questions/612131/whats-the-easiest-way-to-resize-optimize-an-image-size-with-the-iphone-sdk NSData dataForJPEGFile UIImageJPEGRepresentation theImage 0.6 This creates an NSData instance containing the raw bytes for a JPEG image at a 60 quality setting. The contents of that NSData instance can then be written to disk or cached in..
iCloud basics and code sample [closed] http://stackoverflow.com/questions/7795629/icloud-basics-and-code-sample d typeName @ self.documentState typeName if contents length 0 self.documentText NSString alloc initWithBytes contents bytes length contents length encoding NSUTF8StringEncoding else self.documentText @ NSLog @ UIDocument Loaded the following text..
Programmatically retrieve memory usage on iPhone http://stackoverflow.com/questions/787160/programmatically-retrieve-memory-usage-on-iphone ObjectAlloc Leaks. I'm not interested in those only to know if it's possible to write some code and get the amount of bytes being used and report it via NSLog. Thanks. iphone objective c cocoa touch share improve this question To get the actual.. and report it via NSLog. Thanks. iphone objective c cocoa touch share improve this question To get the actual bytes of memory that your application is using you can do something like the example below. However you really should become familiar.. task_info mach_task_self TASK_BASIC_INFO task_info_t info size if kerr KERN_SUCCESS NSLog @ Memory in use in bytes u info.resident_size else NSLog @ Error with task_info s mach_error_string kerr There is also a field in the structure..
iPhone Data Usage Tracking/Monitoring http://stackoverflow.com/questions/7946699/iphone-data-usage-tracking-monitoring ifi_opackets dataReceived networkStatisc ifi_ipackets else if type WWAN dataSent networkStatisc ifi_obytes dataReceived networkStatisc ifi_ibytes cursor cursor ifa_next freeifaddrs addrs return NSArray arrayWithObjects NSNumber.. networkStatisc ifi_ipackets else if type WWAN dataSent networkStatisc ifi_obytes dataReceived networkStatisc ifi_ibytes cursor cursor ifa_next freeifaddrs addrs return NSArray arrayWithObjects NSNumber numberWithInt dataSent NSNumber numberWithInt.. of an iPhone device and not my application alone . Now if I use internet through WiFi or through 3G I get the the data bytes only in ifi_obytes sent and ifi_ibytes received but I think I should get WiFi usage in ifi_opackets and ifi_ipackets . Also..
Checking memory allocation in Instruments http://stackoverflow.com/questions/1061235/checking-memory-allocation-in-instruments and it doesn't take deallocations into account. Essentially it will always go up . What you can do is look at the Net Bytes and # Net columns. These columns will adjust based on the number of objects you deallocate and if you're concerned about..
Test Driven Design for iPhone Native apps http://stackoverflow.com/questions/195820/test-driven-design-for-iphone-native-apps expected Expected only # i bytes. Actual data contains more. actual data.bytes.int8_at i assert_equal expected actual Bytes should be equal at offset # i expected # expected.chr but was # actual.chr expected file.getc raise AssertionFailedError..
Instruments ObjectAlloc: Explanation of Live Bytes & Overall Bytes http://stackoverflow.com/questions/2154219/instruments-objectalloc-explanation-of-live-bytes-overall-bytes ObjectAlloc Explanation of Live Bytes Overall Bytes I'm using Instument's ObjectAlloc tool in an attempt to understand what the memory my application iPhone.. ObjectAlloc Explanation of Live Bytes Overall Bytes I'm using Instument's ObjectAlloc tool in an attempt to understand what the memory my application iPhone is doing and when.. iPhone is doing and when and where it is doing it. I would really like a basic explanation of these statistics Live Bytes #Living #Transitory Overall Bytes When I am trying to work out how much memory my application is using am I to look at Live..
How to parse Google weather API using NSXML? http://stackoverflow.com/questions/3306214/how-to-parse-google-weather-api-using-nsxml connection release webData release void connectionDidFinishLoading NSURLConnection connectio NSLog @ DONE. Received Bytes d webData length NSString theXML NSString alloc initWithBytes webData mutableBytes length webData length encoding NSUTF8StringEncoding.. NSURLConnection connectio NSLog @ DONE. Received Bytes d webData length NSString theXML NSString alloc initWithBytes webData mutableBytes length webData length encoding NSUTF8StringEncoding NSLog @ thexml @ theXML theXML release if parser.. connectio NSLog @ DONE. Received Bytes d webData length NSString theXML NSString alloc initWithBytes webData mutableBytes length webData length encoding NSUTF8StringEncoding NSLog @ thexml @ theXML theXML release if parser parser release parser..
http://stackoverflow.com/questions/3968107/http-post-request release webData setLength 0 void connectionDidFinishLoading NSURLConnection connection NSLog @ DONE. Received Bytes d webData length NSString theXML NSString alloc initWithBytes webData mutableBytes length webData length encoding NSUTF8StringEncoding.. NSURLConnection connection NSLog @ DONE. Received Bytes d webData length NSString theXML NSString alloc initWithBytes webData mutableBytes length webData length encoding NSUTF8StringEncoding NSLog @ @ theXML theXML release if webData length.. connection NSLog @ DONE. Received Bytes d webData length NSString theXML NSString alloc initWithBytes webData mutableBytes length webData length encoding NSUTF8StringEncoding NSLog @ @ theXML theXML release if webData length 0 parser NSXMLParser..
MkMapView rame et fuite mémoire apple http://stackoverflow.com/questions/5935243/mkmapview-rame-et-fuite-memoire-apple séparée qui contenait la MkMapView Dans tous les cas le résultat est le même Les fuites sont les suivantes Malloc 16 Bytes _NSCFDictionary Malloc 16 Bytes Pour les 3 la librairie responsable est GMM et la frame responsable est CreateImageRefFromTileData.. Dans tous les cas le résultat est le même Les fuites sont les suivantes Malloc 16 Bytes _NSCFDictionary Malloc 16 Bytes Pour les 3 la librairie responsable est GMM et la frame responsable est CreateImageRefFromTileData Voil si vous avez une.. view which contained the MkMapView In all cases the result is the same Leaks are Malloc Malloc _NSCFDictionary 16 Bytes 16 Bytes For the 3 library is responsible for GMM and the frame is responsible CreateImageRefFromTileData That is if you..
iOS Low Memory Crash, but very low memory usage http://stackoverflow.com/questions/5980636/ios-low-memory-crash-but-very-low-memory-usage when it creates a UIWebView it goes up to around 5.87MB and proceeds to crash. Those are the values given under Live Bytes in Instruments while running on my 1st gen iPad. There is no crash log that I can find. The following is from the console..
Objective C alloc/release error http://stackoverflow.com/questions/6928028/objective-c-alloc-release-error release self.responseXMLData release void connectionDidFinishLoading NSURLConnection connection NSLog @ DONE. Received Bytes d self.responseXMLData length self.conn release if _delegate respondsToSelector @selector xmlDidFinishLoading _delegate.. addChild assignmentElement NSData xmlData self.doc.XMLData NSString theXML NSString alloc initWithBytes xmlData bytes length xmlData length encoding NSUTF8StringEncoding theXML theXML stringByReplacingOccurrencesOfString @ inferenceresponse.. ONLY in dealloc. Edit You say it crashes releasing theXML. This code is wrong NSString theXML NSString alloc initWithBytes xmlData bytes length xmlData length encoding NSUTF8StringEncoding theXML theXML stringByReplacingOccurrencesOfString @ inferenceresponse..
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