在 iphone 中的 UIWebView 中显示本地 pdf 文件

Question

I am display local pdf file in UIWebView but it shows exception in path here is my code

     NSString*fileName=content_Source;
     NSString *path = [[NSBundle mainBundle] pathForResource:fileName ofType:@"pdf"];
     NSURL *url = [NSURL fileURLWithPath:path];
     NSURLRequest *request = [NSURLRequest requestWithURL:url];
    [webView setScalesPageToFit:YES];
    [webView loadRequest:request]

Answer 1

You must be using the file name extension while setting the file name. So make sure the extension will not be used in file name if it's setting along with Type (like ofType:@"pdf").

Here's my code:

UIWebView *webView = [[UIWebView alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
webView.backgroundColor = [UIColor redColor];
NSString*fileName= @"About_Downloads";
NSString *path = [[NSBundle mainBundle] pathForResource:fileName ofType:@"pdf"];
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL fileURLWithPath:path isDirectory:NO]];
[webView setScalesPageToFit:YES];
[webView loadRequest:request];
[self.view addSubview:webView];

There's a better way to show PDFs:

UIDocumentInteractionController *dc = [UIDocumentInteractionController interactionControllerWithURL:[NSURL fileURLWithPath:path isDirectory:NO]];
dc.delegate = self; 
[dc presentPreviewAnimated:YES];

Make sure use the delegate along with that code to work it properly.

(UIViewController *)documentInteractionControllerViewControllerForPreview:(UIDocumentInteractionController *)controller{
    return self;
}

Answer 2

first validate that string and the assign to URL like bellow..

   NSString *strURLPath = [self trimString: path];
   NSURL *url = [NSURL fileURLWithPath:strURLPath];

use my bellow method...

-(NSString*) trimString:(NSString *)theString {
    if (theString != [NSNull null])
        theString = [theString stringByTrimmingCharactersInSet: [NSCharacterSet whitespaceAndNewlineCharacterSet]];
    return theString;
}

Answer 3

It is working fine with the given code problem was that in my file Name i was giving also the type like ali.pdf they type pdf so it get exception it worked fine now when i use filename like following

 NSString*fileName=@"ali";

Instead of

    NSString*fileName=@"ali.pdf";

Answer 4

CGRect rect = [[UIScreen mainScreen] bounds];
    CGSize screenSize = rect.size;
    UIWebView *webView = [[UIWebView alloc] initWithFrame:CGRectMake(0,0,screenSize.width,screenSize.height)];

    NSString *path = [[NSBundle mainBundle] pathForResource:@"pdf" ofType:@"pdf"];
    NSURL *targetURL = [NSURL fileURLWithPath:path];
    NSURLRequest *request = [NSURLRequest requestWithURL:targetURL];
    [webView loadRequest:request];

    [self.view addSubview:webView];