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2014/10/15 ¤U¤È 10:15:19
iphone Programming Glossary: uiimagepngrepresentationiOS Image Orientation has Strange Behavior http://stackoverflow.com/questions/10600613/ios-image-orientation-has-strange-behavior realizes this flips it then saves it so it appears in the camera roll properly. That code looks like so NSData pngdata UIImagePNGRepresentation self.workingImage PNG wrap UIImage img self rotateImageAppropriately UIImage imageWithData pngdata UIImageWriteToSavedPhotosAlbum..
How to post more parameters with image upload code in iOS? http://stackoverflow.com/questions/10618056/how-to-post-more-parameters-with-image-upload-code-in-ios To use the image upload you would call this in your VC like this use as many parameters as you need. NSData imageData UIImagePNGRepresentation myImage NSString fileName @ MyFileName.png NSDictionary params NSDictionary dictionaryWithObjectsAndKeys @ Param1 @ Param1Name..
iPhone - Why does the documentation say UIImageView is NSCoding compliant? http://stackoverflow.com/questions/1072700/iphone-why-does-the-documentation-say-uiimageview-is-nscoding-compliant
Get size of a UIImage (bytes length) not height and width http://stackoverflow.com/questions/1296707/get-size-of-a-uiimage-bytes-length-not-height-and-width data of a UIImage can vary so for the same image one can have varying sizes of data. One thing you can do is use UIImagePNGRepresentation or UIImageJPEGRepresentation to get the equivalent NSData constructs for either then check the size of that. share improve..
Howe to capture UIView top UIView http://stackoverflow.com/questions/14049796/howe-to-capture-uiview-top-uiview nil nil nil and you can also save this image with this bellow line for Document Directory.. NSData imageData UIImagePNGRepresentation tempImageSave NSFileManager fileMan NSFileManager defaultManager NSString fileName NSString stringWithFormat @ d.png 1 NSArray..
How to add a UIImage in MailComposer Sheet of MFMailComposeViewController http://stackoverflow.com/questions/1527351/how-to-add-a-uiimage-in-mailcomposer-sheet-of-mfmailcomposeviewcontroller emailImage UIImage imageNamed @ myImageName.png Convert the image into data NSData imageData NSData dataWithData UIImagePNGRepresentation emailImage Create a base64 string representation of the data using NSData Base64 NSString base64String imageData base64EncodedString..
http://stackoverflow.com/questions/1684799/generate-hash-from-uiimage this requires that you import CommonCrypto CommonDigest.h unsigned char result 16 NSData imageData NSData dataWithData UIImagePNGRepresentation inImage CC_MD5 imageData bytes imageData length result NSString imageHash NSString stringWithFormat @ 02X 02X 02X 02X 02X..
MFMailComposeViewController image orientation http://stackoverflow.com/questions/20204495/mfmailcomposeviewcontroller-image-orientation mailVC MFMailComposeViewController new NSArray aAddr NSArray arrayWithObjects gAddr nil NSData imageAsNSData UIImagePNGRepresentation gImag mailVC setMailComposeDelegate self mailVC setToRecipients aAddr mailVC setSubject gSubj mailVC addAttachmentData imageAsNSData..
Saving image to Documents directory and retrieving for email attachment http://stackoverflow.com/questions/2037432/saving-image-to-documents-directory-and-retrieving-for-email-attachment @ savedImage.png UIImage image imageView.image imageView is my image from camera NSData imageData UIImagePNGRepresentation image imageData writeToFile savedImagePath atomically NO Here is the new getting data code NSArray paths NSSearchPathForDirectoriesInDomains..
How to take a screenshot programmatically http://stackoverflow.com/questions/2200736/how-to-take-a-screenshot-programmatically UIImage image UIGraphicsGetImageFromCurrentImageContext UIGraphicsEndImageContext NSData data UIImagePNGRepresentation image data writeToFile @ foo.png atomically YES UPDATE April 2011 for retina display change the first line into this if..
http://stackoverflow.com/questions/2486705/storing-image-in-plist UIImage NSCoder.h @implementation UIImage MyExtensions void encodeWithCoder NSCoder encoder encoder encodeDataObject UIImagePNGRepresentation self id initWithCoder NSCoder decoder return self initWithData decoder decodeDataObject @end When this has been added you..
Save UIView's representation to file http://stackoverflow.com/questions/3051630/save-uiviews-representation-to-file UIGraphicsEndImageContext NSString pathToCreate @ sample.png NSData imageData NSData dataWithData UIImagePNGRepresentation image imageData writeToFile pathToCreate atomically YES but it seems tricky and I think there must be more efficient way..
Getting a screenshot of a UIScrollView, including offscreen parts http://stackoverflow.com/questions/3539717/getting-a-screenshot-of-a-uiscrollview-including-offscreen-parts _scrollView.contentOffset savedContentOffset _scrollView.frame savedFrame UIGraphicsEndImageContext if image nil UIImagePNGRepresentation image writeToFile @ tmp test.png atomically YES system open tmp test.png The last few lines simply write the image to tmp..
How should I store UIImages within my Core Data database? http://stackoverflow.com/questions/3908910/how-should-i-store-uiimages-within-my-core-data-database when generating the image save that directly to the database if value isKindOfClass NSData class return value return UIImagePNGRepresentation UIImage value id reverseTransformedValue id value return UIImage imageWithData NSData value For your transformable attribute..
iOS SDK - Programmatically generate a PDF file http://stackoverflow.com/questions/4362734/ios-sdk-programmatically-generate-a-pdf-file implementation of addImageView HPDF_ functions are from libHaru void addImageView UIImageView imageView NSData pngData UIImagePNGRepresentation imageView.image if pngData nil HPDF_Image image HPDF_LoadPngImageFromMem _pdf pngData bytes pngData length if image NULL..
AVFoundation, how to turn off the shutter sound when captureStillImageAsynchronouslyFromConnection? http://stackoverflow.com/questions/4401232/avfoundation-how-to-turn-off-the-shutter-sound-when-capturestillimageasynchrono UIImage image UIGraphicsGetImageFromCurrentImageContext UIGraphicsEndImageContext NSData data UIImagePNGRepresentation image data writeToFile @ foo.png atomically YES If you're wanting this to fill the whole screen with a preview of the video..
Drawing waveform with AVAssetReader http://stackoverflow.com/questions/5032775/drawing-waveform-with-avassetreader #define imgExt @ jpg #define imageToData x UIImageJPEGRepresentation x 4 #define imgExt @ png #define imageToData x UIImagePNGRepresentation x NSString assetCacheFolder NSArray assetFolderRoot NSSearchPathForDirectoriesInDomains NSCachesDirectory NSUserDomainMask..
Save An Image To Application Documents Folder From UIView On IOS http://stackoverflow.com/questions/6821517/save-an-image-to-application-documents-folder-from-uiview-on-ios since that can impact performance if the data set grows too large. Better to write the images to files. NSData pngData UIImagePNGRepresentation image This pulls out PNG data of the image you've captured. From here you can write it to a file NSArray paths NSSearchPathForDirectoriesInDomains..
iOS 5 Attach photo to Twitter with Twitter API http://stackoverflow.com/questions/8129079/ios-5-attach-photo-to-twitter-with-twitter-api NSUTF8StringEncoding withName @ status type @ multipart form data add image postRequest addMultiPartData UIImagePNGRepresentation image withName @ media type @ multipart form data Set the account used to post the tweet. postRequest setAccount twitterAccount..
How Do I Get The Correct Latitude and Longitude From An Uploaded iPhone Photo? http://stackoverflow.com/questions/9319465/how-do-i-get-the-correct-latitude-and-longitude-from-an-uploaded-iphone-photo objectForKey @ UIImagePickerControllerEditedImage previewImage.image nil self.previewImage.image img NSData imageData UIImagePNGRepresentation img if imageData length 0 self._havePictureData YES iphone ios mapkit mkmapkit share improve this question i think..
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