iOS How to move all files from NSDocumentDirectory to NSCachesDirectory?

troop231 said:

Hello,

I'm trying to move all of the documents that reside in the NSDocumentDirectory to the NSCachesDirectory, and then delete all of those NSDocument files upon the first app launch of my next version update to my app. The only reason I'm doing this is to abide by Apple's iOS data storage guidelines, as my app update was rejected for saving .PDF files to the NSDocumentsDirectory (I have no clue why, because the app has never been rejected for this until this update (app is almost 2 years old, and I have been saving .PDFs this way since day 1), maybe I got a strict reviewer?)

I need to move all of the user's already downloaded .PDF files to the NSCachesDirectory and then delete them from the NSDocumentDirectory.

Is there a simple way this can be accomplished?

Thank you in advance for any help provided.

This is my code, but am getting this error in the Console: NSFilePath=Test.pdf, NSDestinationFilePath=/Users/Charley/Library/Application Support/iPhone Simulator/5.1/Applications/96EB01D1-81B7-4ECE-B337-D2D663969EE3/Library/Caches, NSUnderlyingError=0xb566d50 "The operation couldn’t be completed. File exists"

Code:

NSFileManager *fileManager = [NSFileManager defaultManager];

NSError *error;
NSUserDefaults      *Defaults;
 int                 launchCount;

 Defaults = [NSUserDefaults standardUserDefaults];
 launchCount = [Defaults integerForKey:@"launchCount" ] + 1;
 [Defaults setInteger:launchCount forKey:@"launchCount"];
 [Defaults synchronize];

if(launchCount == 1) {

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];

NSArray *path2 = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
NSString *dest = [path2 objectAtIndex:0];

NSArray *Contents = [fileManager contentsOfDirectoryAtPath:documentsDirectory error:&error];

    for(NSString *source in Contents)
    {
        if(![fileManager moveItemAtPath:source
                                 toPath:dest
                                  error:&error])
        {
            NSLog(@"Error: %@", error);
        }
    }
}

Click to expand...

troop231 said:

Hello Duncan, I got a few steps closer with my updated code below, but I am now getting this error in the Console: NSFilePath=Test.pdf, NSDestinationFilePath=/Users/Charley/Library/Application Support/iPhone Simulator/5.1/Applications/96EB01D1-81B7-4ECE-B337-D2D663969EE3/Library/Caches/Test.pdf, NSUnderlyingError=0x6b7b080 "The operation couldn’t be completed. No such file or directory"

Code:

Code:

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
        
    NSArray *path2 = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
        
    NSString *newDirectory = [path2 objectAtIndex:0];

    NSArray *Contents = [fileManager contentsOfDirectoryAtPath:documentsDirectory error:&error];
        
        for(NSString *source in Contents)
        {
            NSString *dest = [newDirectory stringByAppendingPathComponent:
                              [source lastPathComponent]];
            
            if(![fileManager moveItemAtPath:source
                                     toPath:dest
                                      error:&error])
            {
                NSLog(@"Error: %@", error);
            }
        }
    }

I appreciate your response.

Click to expand...

troop231 said:

Got it! I logged the source path, and all the console shows is this: Test.pdf

Obviously that wont work right? I'm wondering how I can solve it. It seems as if all its grabbing is the file name, but it cant find the relative path of the file to actually move it to the destination path, which was logged to the console correctly: /Users/Charley/Library/Application Support/iPhone Simulator/5.1/Applications/96EB01D1-81B7-4ECE-B337-D2D663969EE3/Library/Caches/Test.pdf

This has me stumped!

Click to expand...

troop231 said:

Here is the code that solved it:

Code:

    NSError *error = nil;
    NSUserDefaults      *Defaults;
    int                 launchCount;
     
     Defaults = [NSUserDefaults standardUserDefaults];
     launchCount = [Defaults integerForKey:@"launchCount" ] + 1;
     [Defaults setInteger:launchCount forKey:@"launchCount"];
     [Defaults synchronize];
    
    if(launchCount == 1) {
    
        NSString *source = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];

        NSString *destination = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject];
        
        NSArray *contents = [fileManager contentsOfDirectoryAtPath:source error:&error];
        
        for(NSString *sourceFileName in contents) 
           {
               NSString *sourceFile = [sourceDirectory stringByAppendingPathComponent:sourceFileName];
               NSString *destFile = [destinationDirectory stringByAppendingPathComponent:sourceFileName];

            if(![fileManager moveItemAtPath:sourceFile toPath:destFile error:&error]) 
            {
                NSLog(@"Error: %@", error);
            }
        }
    }

Click to expand...