フォトピッカーを使用して画像を選択し、その画像をアプリフォルダーに内部的に保存しようとしています。
- (void) imagePickerController: (UIImagePickerController *) pickerdidFinishPickingMediaWithInfo: (NSDictionary *) info {
NSString *mediaType = [info objectForKey: UIImagePickerControllerMediaType];
UIImage *originalImage, *editedImage, *imageToUse;
// Handle a still image picked from a photo album
if (CFStringCompare ((CFStringRef) mediaType, kUTTypeImage, 0)
== kCFCompareEqualTo) {
editedImage = (UIImage *) [info objectForKey:
UIImagePickerControllerEditedImage];
originalImage = (UIImage *) [info objectForKey:
UIImagePickerControllerOriginalImage];
if (editedImage) {
imageToUse = editedImage;
} else {
imageToUse = originalImage;
}
// Do something with imageToUse
//save it
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *imageName = [documentsDirectory stringByAppendingString:[NSString stringWithFormat:@"%d", myUniqueID]];
NSString *imagePath = [imageName stringByAppendingPathComponent:@".png"];
NSData *webData = UIImagePNGRepresentation(editedImage);
NSError* error = nil;
bool success = [webData writeToFile:imagePath options:NULL error:&error];
if (success) {
// successfull save
imageCount++;
[[NSUserDefaults standardUserDefaults] setInteger:imageCount forKey:@"imageCount"];
NSLog(@"@Success save to: %@", imagePath);
}
else if (error) {
NSLog(@"Error:%@", error.localizedDescription);
}
}
...
}
私が理解できないのは、それwriteToFile:::
が返さfalse
れるが、値が返されerror
ないため、何が問題になっているのか理解できないということです。どんな助けでも大歓迎ですありがとう