iOS QLPreviewController show pdf saved to file system

Question

I have QLPreviewController working if I show a PDF file system from my bundle on the project,

but If I want to show a PDF from the file system, it doesnt show it, how can I call a pdf file that I have just downloaded in my file system?

The code:

- (void)initPDFviewer
{
    QLPreviewController *previewController=[[QLPreviewController alloc]init];
    previewController.delegate=self;
    previewController.dataSource=self;
    [self presentModalViewController:previewController animated:YES];
    [previewController.navigationItem setRightBarButtonItem:nil];
}

- (NSInteger)numberOfPreviewItemsInPreviewController:(QLPreviewController *)controller
{
    return 1;
}
- (id <QLPreviewItem>)previewController:(QLPreviewController *)controller previewItemAtIndex:(NSInteger)index
{
    //return 0;


    //return url!


    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

    NSLog(@"paths :: %@", paths);

    return 0;

}

So my problem is how to get the pdf [only pdf in the documents directory], how do i get this pdf?

thanks

thanks!

Show your relevant code for accessing the file and setting up the `QLPreviewController`. — rmaddy, Aug 16 '13 at 04:20
@rmaddy hi, thanks, i have placed the code, as you see, i dont know how to get the doc, thanks — manuelBetancurt, Aug 16 '13 at 04:43
Do you have a specific PDF in the Documents folder or do you need to find one or more PDFs in the Documents folder at runtime? If you have a specific then you get the full path by doing something like: `NSString *pdfPath = [paths[0] stringByAppendingPathComponent:@"sutff.pdf"];` — rmaddy, Aug 16 '13 at 05:03

score 6 · Accepted Answer · edited Sep 21 '17 at 09:32

Change your init method to below.

-(id)init
{
    if (self = [super init])
    {
        //  arrayOfDocuments = [[NSArray alloc] initWithObjects: 
        //          @"iOSDevTips.png", @"Remodel.xls", @"Core J2ME Technology.pdf", nil];

         NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
         NSString *docPath = [paths lastObject];

         NSArray *docArray = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:docPath error:nil];

         arrayOfDocuments = [[NSArray alloc] initWithArray:docArray];
    }
    return self;
}

Add this new method

-(NSString*)documentDirectoryPathForResource:(NSString*)aFileName 
{
     NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
     NSString *fullPath = [[paths lastObject] stringByAppendingPathComponent:aFileName];
     return fullPath;
}

And replace your method with my method

- (id <QLPreviewItem>)previewController: (QLPreviewController *)controller previewItemAtIndex:(NSInteger)index 
{
      // Break the path into it's components (filename and extension)
      NSString *path = [self documentDirectoryPathForResource:arrayOfDocuments[index]];

      return [NSURL fileURLWithPath:path];
}

Code is self explanatory. Just create the array of all the documents that are in your document directory. And after that use that array to create the path and provide URL of that path to QLPreviewController

score 1 · Answer 2 · edited Sep 04 '14 at 06:03

1

NSURL *fileURL = nil;

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

NSString *documentsDirectory = [paths objectAtIndex:0];

NSString *wordFilePath = [documentsDirectory stringByAppendingPathComponent:@"sample.doc"];

fileURL = [NSURL fileURLWithPath:wordFilePath];

return fileURL;

edited Sep 04 '14 at 06:03

manuelBetancurt

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answered Sep 04 '14 at 06:02

Puneetpal Arneja

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iOS QLPreviewController show pdf saved to file system

2 Answers2