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POSaving in NSDocumentDirectory or NSCachesDirectory
 

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    <p>Have tried storing my <code>NSMutableArray</code>'s object to <code>NSUserDefaults</code> but, no luck. My <code>NSMutableArray</code> contains this log right here: </p> <pre><code>`ALAsset - Type:Photo, URLs:assets-library://asset/asset.JPG?id=92A7A24F-D54B-496E-B250-542BBE37BE8C&amp;ext=JPG` </code></pre> <p>I know that its a <code>ALAsset object</code>, in the <code>AGImagePickerController</code> it is compared as NSDictionary, so what I needed to do is save the NSDictionary or the Array I used to where I store my <code>ALAsset object</code> then save it in either in <code>NSDocu</code> or <code>NSCaches</code> as a file then retrieve it again (This was my idea).</p> <p>But the problem is,Though I tried this code but not working, and doesn't display anything in <code>NSDocu</code> or <code>NSCache</code> Directories.</p> <p><strong>First try</strong> (<code>info</code> is the one that contains <code>ALAsset object</code>):</p> <pre><code>NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *basePath = ([paths count] &gt; 0) ? [paths objectAtIndex:0] : nil; NSString *filePath = [basePath stringByAppendingPathComponent:@"filename.plist"]; NSDictionary *dictionary = [NSDictionary dictionaryWithContentsOfURL:filePath]; NSString *error; NSData *plistData = [NSPropertyListSerialization dataFromPropertyList:plistDict format:NSPropertyListXMLFormat_v1_0 errorDescription:&amp;error]; if(plistData) { [info writeToFile:filePath atomically:YES]; } else { NSLog(error); } </code></pre> <p><strong>Second try</strong>:</p> <pre><code>- (NSString *)createEditableCopyOfFileIfNeeded:(NSString *)_filename { // First, test for existence. BOOL success; NSFileManager *fileManager = [NSFileManager defaultManager]; NSError *error; NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString *writableFilePath = [documentsDirectory stringByAppendingPathComponent: _filename ]; success = [fileManager fileExistsAtPath:writableFilePath]; if (success) return writableFilePath; // The writable file does not exist, so copy the default to the appropriate location. NSString *defaultFilePath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent: _filename ]; success = [fileManager copyItemAtPath:defaultFilePath toPath:writableFilePath error:&amp;error]; if (!success) { NSLog([error localizedDescription]); NSAssert1(0, @"Failed to create writable file with message '%@'.", [error localizedDescription]); } return writableFilePath; } </code></pre> <p>Save it this way:</p> <pre><code> NSString *writableFilePath = [self createEditableCopyOfFileIfNeeded:[NSString stringWithString:@"hiscores"]]; if (![info writeToFile:writableFilePath atomically:YES]){ NSLog(@"WRITE ERROR"); } </code></pre> <p><strong>Third try</strong>:</p> <pre><code>NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString *filePath = [documentsDirectory stringByAppendingPathComponent:??????]; [info writeToFile:filePath atomically:YES]; </code></pre> <p><strong>Fourth try</strong>(Unsure of because of its modifying in the appbundle): <a href="https://stackoverflow.com/a/6311129/1302274">https://stackoverflow.com/a/6311129/1302274</a></p> <p>Is there other way? Hope someone would guide me.</p>
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    1. COThe array contents need to be NSCoding compliant, but ALAsset is not! You could try to save the Asset URL instead, but be aware that the URL may become unavailable.
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    2. COWas able to save the url, but i need the alasset object
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    3. COUse ALAssetsLibrary (assetForURL method) to retrieve the ALAsset from the URL.
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