Check if URL is local file?

Question

I am trying to check the current URL in a UIWebView with the following code:

- (void)webViewDidFinishLoad:(UIWebView *)webView {

    NSString *currentURL = webView.request.URL.absoluteString;

    NSLog(@"Current URL: %@", currentURL);

    NSString *loginpage = @"file:///var/mobile/Applications/652BAC0C-DEAE-4695-9195-BE617B9D5106/School%20VLE%20Business.app/login.html";

    if([currentURL isEqualToString:loginpage])
    {
        NSLog(@"Inputting user details...");

        NSString *result;
        result = [webView stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"$('#usernamefield').val('%@');", username]];
        result = [webView stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"$('#passwordfield').val('%@');", password]];
        result = [webView stringByEvaluatingJavaScriptFromString:@"$('#submitbutton').click();"];

        NSLog(@"Logged in!");

    }
}

But the code in the local URL (652BAC0C-DEAE-4695-9195-BE617B9D5106 for me) isn't going to be the same for everybody, so how can I do the same check but without the long code?

Answer 1

This would work as a more general solution of determining whether a given URL is from the local file system or is being loaded remotely:-

NSString *str = @"file://var/mobile/Applications/652BAC0C-DEAE-4695-9195-BE617B9D5106/School%20VLE%20Business.app/login.html";
NSURL *url = [NSURL URLWithString:str];
if ([[url scheme] isEqualToString:@"file"]) {
    // URL is a (local) file...
}

(Which answers the subject of your question How can I check if URL is local file?)

Answer 2

NSString *loginpage = [[NSBundle mainBundle] pathForResource:@"login" ofType:@"html"];

Since you're using spaces in your app's (which I recommend you not to do anymore), you can use the following code to simulate those %20 escape strings:

NSString *loginpage = [[[NSBundle mainBundle] pathForResource:@"login" ofType:@"html"] stringByReplacingOccurrencesOfString:@"%20" withString:@" "];

Answer 3

You can use these lines to search in a string:

if ([your_complete_string rangeOfString:@"YOUR_SEARCH_STRING"].location != NSNotFound){

    // Do your stuff here if found

}

Answer 4

You can find using fileReferenceUrl

//if local file
NSURL *url = [NSURL fileURLWithPath:songsList[index]];
if(url.fileReferenceURL != nil){
    //is local URL
}else{
    //Is live
   url = [NSURL URLWithString:songsList[index]];
}