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2014/10/15 ¤U¤È 10:04:08
iphone Programming Glossary: atomicallyHow to export data to a csv file with iPhone SDK 3.0? http://stackoverflow.com/questions/1159576/how-to-export-data-to-a-csv-file-with-iphone-sdk-3-0 improve this question You can also do something like array componentsJoinedByString @ writeToFile @ components.csv atomically YES encoding NSUTF8StringEncoding error NULL You can use combinations of this to put together a CSV append the output of..
http://stackoverflow.com/questions/1225514/making-an-emoji-enabeling-app
http://stackoverflow.com/questions/1760371/how-can-we-store-into-an-nsdictionary-what-is-the-difference-between-nsdictiona it mutableDict setObject @ value3 forKey @ key3 ...then store it to a file mutableDict writeToFile @ path to file atomically YES ...and read it back again NSMutableDictionary anotherDict NSMutableDictionary dictionaryWithContentsOfFile @ path to..
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 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 NSDocumentDirectory NSUserDomainMask..
How to take a screenshot programmatically http://stackoverflow.com/questions/2200736/how-to-take-a-screenshot-programmatically UIGraphicsEndImageContext NSData data UIImagePNGRepresentation image data writeToFile @ foo.png atomically YES UPDATE April 2011 for retina display change the first line into this if UIScreen mainScreen respondsToSelector @selector..
iOS: Download image from url and save in device http://stackoverflow.com/questions/2499176/ios-download-image-from-url-and-save-in-device documentsDirectory stringByAppendingPathComponent @ pkm.jpg NSData thedata NULL thedata writeToFile localFilePath atomically YES UIImage img UIImage alloc initWithData thedata iphone ios image cocoa touch ipad share improve this question If.. theData NSData dataWithContentsOfURL yourURLHere to load the data from the disk and then save it using writeToFile atomically . If you need more control over the loading process or have it in background look at the documentation of NSURLConnection..
iPhone SDK: How do you download video files to the Document Directory and then play them? http://stackoverflow.com/questions/2572529/iphone-sdk-how-do-you-download-video-files-to-the-document-directory-and-then-p simplest way to download is synchronously NSData data NSData dataWithContentsOfURL movieUrl data writeToURL movieUrl atomically YES But it is better for app responsiveness etc to download asynchronously NSURLRequest theRequest NSURLRequest requestWithURL..
Getting a screenshot of a UIScrollView, including offscreen parts http://stackoverflow.com/questions/3539717/getting-a-screenshot-of-a-uiscrollview-including-offscreen-parts 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 test.png and then opens it in Preview.app...
How can I find out if the iPhone user currently has a passcode set and encryption enabled? http://stackoverflow.com/questions/3806455/how-can-i-find-out-if-the-iphone-user-currently-has-a-passcode-set-and-encryptio @ tmp NSString testFilePath tmpDirectoryPath stringByAppendingPathComponent @ testFile @ writeToFile testFilePath atomically YES encoding NSUTF8StringEncoding error NULL obviously do better error handling NSDictionary testFileAttributes NSFileManager..
Drawing waveform with AVAssetReader http://stackoverflow.com/questions/5032775/drawing-waveform-with-avassetreader nil NSData waveFormData self renderPNGAudioPictogramForAssett asset waveFormData writeToFile assetPictogramFilepath atomically YES assetFileURL release assetPictogramFilepath release if completionBlock waveFormData retain NSThread MCSM_performBlockOnMainThread.. nil NSData waveFormData self renderPNGAudioPictogramForAssett asset waveFormData writeToFile assetPictogramFilepath atomically YES if completionBlock waveFormData retain NSThread MCSM_performBlockOnMainThread ^ UIImage result UIImage imageWithData..
Problem setting exif data for an image http://stackoverflow.com/questions/5125323/problem-setting-exif-data-for-an-image
http://stackoverflow.com/questions/5619719/write-a-file-on-ios objectAtIndex 0 NSString appFile documentsDirectory stringByAppendingPathComponent @ MyFile data writeToFile appFile atomically YES I have created MyFile.txt on resources. iphone file nsbundle share improve this question Your code is working at..
iPhone SDK - Google TTS and encoding http://stackoverflow.com/questions/5923974/iphone-sdk-google-tts-and-encoding
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 filePath documentsPath stringByAppendingPathComponent @ image.png Add the file name pngData writeToFile filePath atomically YES Write the file Reading it later works the same way. Build the path like we just did above then NSData pngData NSData..
Application crashed while importing songs from Ipod library in Iphone for iOs 5.0 http://stackoverflow.com/questions/8077725/application-crashed-while-importing-songs-from-ipod-library-in-iphone-for-ios-5 NSString stringWithFormat @ @ playlist.data documentsDirectory NSLog @ file path @ filePath data writeToFile filePath atomically YES if NSFileManager defaultManager fileExistsAtPath filePath NSLog @ file exists else NSLog @ file doesn't exist NSLog..
http://stackoverflow.com/questions/905542/how-to-write-data-in-plist errorDesc if temp NSLog errorDesc errorDesc release temp setValue @ 123 forKey @ line1 temp writeToFile plistPath atomically YES Reading data from save.plist NSLog temp objectForKey @ name NSLog temp objectForKey @ wish NSNumber num temp valueForKey.. intValue printf d i writitng the data in save.plist temp setValue @ green forKey @ color temp writeToFile plistPath atomically NO NSMutableDictionary temp1 NSMutableDictionary NSPropertyListSerialization propertyListFromData plistXML mutabilityOption.. plistPath infoDict setObject NSNumber numberWithBool hidden forKey @ LSUIElement infoDict writeToFile plistPath atomically NO manager changeFileAttributes NSDictionary dictionaryWithObject NSDate date forKey NSFileModificationDate atPath NSBundle..
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