Save NSURL's PDF Locally - Retrieve

Hello,

How would I retrieve an NSUrl's PDF locally from a NSDictionary. I save it like so:

NSData *pdfData = [[NSData alloc] initWithContentsOfURL:[
    NSURL URLWithString:@"http://www.example.com/info.pdf"]];

// Store the Data locally as PDF File
NSString *resourceDocPath = [[NSString alloc] initWithString:[
    [[[NSBundle mainBundle] resourcePath] stringByDeletingLastPathComponent]
        stringByAppendingPathComponent:@"Documents"
]];

NSString *filePath = [resourceDocPath 
    stringByAppendingPathComponent:@"myPDF.pdf"];
[pdfData writeToFile:filePath atomically:YES];


// Now create Request for the file that was saved in your documents folder
NSURL *url = [NSURL fileURLWithPath:filePath];
NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];

[webView setDelegate:self];
[webView loadRequest:requestObj];

But how would I retrieve the file and display it in a UIWebView??

Cheers, SebOH

Solution

You are doing the exact thing, "retrieve the file and display it in a UIWebView??" using the below code

// Now create Request for the file that was saved in your documents folder
NSURL *url = [NSURL fileURLWithPath:filePath];
NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];

[webView setDelegate:self];
[webView loadRequest:requestObj];

Is there some problem you are facing with the above lines of code, is the PDF loading in the webview?

So if you don't want to download the file every time do this check,

if (![[NSFileManager defaultManager] fileExistsAtPath:filePath]) {
//download the file
}

So the whole solution would be

// Store the Data locally as PDF File
NSString *resourceDocPath = [[NSString alloc] initWithString:[
    [[[NSBundle mainBundle] resourcePath] stringByDeletingLastPathComponent]
        stringByAppendingPathComponent:@"Documents"
]];

NSString *filePath = [resourceDocPath 
    stringByAppendingPathComponent:@"myPDF.pdf"];

if (![[NSFileManager defaultManager] fileExistsAtPath:filePath]) {
        //download the file
        NSData *pdfData = [[NSData alloc] initWithContentsOfURL:[
        NSURL URLWithString:@"http://www.example.com/info.pdf"]];
        [pdfData writeToFile:filePath atomically:YES];
    }

// Now create Request for the file that was saved in your documents folder
NSURL *url = [NSURL fileURLWithPath:filePath];
NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];

[webView setDelegate:self];
[webView loadRequest:requestObj];