Check if file exists on iOS and open if it does

Question

Ok. I have an app that parses an XML that contains links to various documents into a TableView. When clicking on the table view row, I would like for the app to check if that file already exists in the NSDocuments folder. If it does, than the subsequent view with a WebView will load that file. If not, then it will download that file, and then load it up. The issue that I am facing right now is that the XML contains some PDF files and some DOC files. I want the app to be able to check for both. How can I do an OR tag in there?

What I have right now is:

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

    NSString *documentsDirectory = [paths objectAtIndex:0];
    NSString *pdfPath = [[documentsDirectory stringByAppendingPathComponent:@"aimprojectdownloads" ] stringByAppendingPathComponent:entry.articleTitle];
    BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:pdfPath];

    if (fileExists) {
        //open the already downloaded file

    }
    if (!fileExists) {
        //download and then open

    }

entry.articleTitle is just going to equal the name of the article, MINUS the extension of it. But, in the folder where they are all stored, it will have the name and the extension. Will that cause problems?

http://stackoverflow.com/questions/14110165/file-search-with-specific-extension-objective-c — Nick, Feb 20 '14 at 17:16
I'm confused on the question. Your code looks fine, what are you trying to do more? — Putz1103, Feb 20 '14 at 17:19

score 0 · Answer 1 · answered Feb 20 '14 at 17:35

One option would be to get the list of files in the folder then iterate through the list. For each one, remove the extension and then compare that to your entry.articleTitle. If you find a match then use that file. If none of the files match then start the download.

Check if file exists on iOS and open if it does

1 Answers1