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PONeed help to quickly search iOS Property List (plist) for value?
 

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  1. PONeed help to quickly search iOS Property List (plist) for value?
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    <p>I currently have a plist file in my iOS Project which is downloaded from the web when updates are available and it contains a list of news articles along with images. </p> <p>The application caches the images on the iPhone for offline access, I am currently trying to write a function which will clean the cached files every so often.</p> <p>Currently I have this code which looks in the Temp folder for images and then deletes them, however for each image found I would like it to check if the file name exists as a value in the plist stored as NSDictionary before deleting, however I am not sure of a quick method to search the NSDictionary without the need for a for statement.</p> <p>Any tips would be great.</p> <pre><code> NSArray *files = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:TMP error:nil]; if (files == nil) { // error... NSLog(@"no files found"); } for (NSString *file in files) { NSString *uniquePath = [TMP stringByAppendingPathComponent: file]; if([file rangeOfString: @".png" options: NSCaseInsensitiveSearch].location != NSNotFound) { NSLog(@"%@", file); if ([[NSFileManager defaultManager] removeItemAtPath: uniquePath error: NULL] == YES) NSLog (@"Remove successful"); else NSLog (@"Remove failed"); } } </code></pre> <p>EDIT</p> <p>I have currently added this not sure if its the best way to do it but it works.</p> <pre><code> NSArray *newsArray = [self.newsData allValues]; // Convert the Array into a string NSString *newsString = [newsArray description]; // Perform Range Search. NSRange range; range = [newsString rangeOfString : filename]; if (range.location != NSNotFound) { NSLog(@"The file exists in the plist %@", filename); } else { // Delete the file } </code></pre>
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