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J'utilise un UIImagePickerController, et une fois qu'une image est sélectionnée, je l'enregistre dans un fichier PNG. Mais pour une raison quelconque, je ne peux pas charger l'image enregistrée.Comment charger une image sur l'iPhone
Voici mon code:
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
//
// Create a PNG representation of the edited image
//
UIImage *anImage = [info valueForKey:UIImagePickerControllerEditedImage];
NSData *imageData = UIImagePNGRepresentation(anImage);
//
// Save the image to the documents directory
//
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
// Get a unique filename for the file
CFUUIDRef theUUID = CFUUIDCreate(NULL);
CFStringRef string = CFUUIDCreateString(NULL, theUUID);
CFRelease(theUUID);
NSString *fileName = [(NSString *)string autorelease];
fileName = [NSString stringWithFormat:@"images/%@", fileName];
fileName = [fileName stringByAppendingString:@".png"];
NSString *path = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithString:fileName] ];
[imageData writeToFile:path atomically:YES];
NSLog(@"Wrote the imageData to a file at path: %@", path);
// TEST TO SEE IF THE FILE WAS WRITTEN CORRECTLY
UIImage *testImage = [UIImage imageWithContentsOfFile:path];
NSLog(@"testImage is %@", testImage);
Et voici ma sortie du débogueur:
2010-12-28 16:29:08.676 Appster[6656:207] The imagePath is defined as: images/7ADB104E-DA45-4EE9-88DA-FF71B8D730CA.png
2010-12-28 16:29:08.712 Appster[6656:207] Wrote the imageData to a file at path: /Users/bschiff/Library/Application Support/iPhone Simulator/4.2/Applications/9F6FC2C7-9369-438C-AF8F-D5D25C72D8D7/Documents/images/FC94AA93-02EC-492A-A8FE-7D0C76E2C085.png
2010-12-28 16:29:08.715 Appster[6656:207] testImage is (null)