I want to open .csv link in the UIWebView. I am getting link some .csv links from the web how to open that link in the UIWebView. I am using the below code
NSString *urlString = #"https://xoxoengage-images-test.s3.amazonaws.com/image/clients/gxoxo/annoucement/XXXXdetails201805021526899124.csv";
NSURL *url = [NSURL URLWithString:[urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];//[NSURL URLWithString:urlString];
NSURLRequest *urlRequest = [NSURLRequest requestWithURL:url];
[_webviewobj loadRequest:urlRequest];
but the result is shown in the below image, help me out to sort this issue.
The UIWebView doesn't support the CSV format natively.
See this: File Formats Supported by UIWebView
If your server returns "text/plain" (or you have this file as ".txt") you'll see its raw text in the web view.
If you want a grid table view, then you need to convert csv to to one of the supported formats. The obvious choice would be HTML.
If you can convert on the server side - that's better, otherwise download the csv file, parse it line by line, and output as HTML. Load the HTML into the web view. loadHTMLString is what you could use.
Also with UIWebView this can be done sort of transparently using a custom NSURLProtocol.
This might be helpful: Where can I find a CSV to NSArray parser for Objective-C?
Related
Is there any way to convert PDF file which contains text,images & may be some interactive form to a html string?
By converting it to html string, I can display that file in WebView & achieve annotation & bookmark without third party library.
And convert that HTML back to PDF file.
Thanks
You can load PDF file directly in UIWebView. Not only PDF, UIWebview supports multiple formats. So there is no need to convert it into html string.
NSURL *url = [NSURL fileURLWithPath:pdfPath];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
[webview loadRequest:request];
I want to load a web site on a UIWebView which is not under my control and edit/add certain UI changes (Some texts, images, etc) to it. Can I do this within my iOS source code? I can't change the hosted html contents since them not under my control.
If this cannot doable within iOS source code, please advice me the correct way to achieve this.
Load the webpage into an NSString, make any modifications and then put the html into the UIWebView.
NSURL *url = [NSURL URLWithString:#"http://example.com/"];
NSString *page = [NSString stringWithContentsOfURL:url usedEncoding:nil error:nil];
/* Make changes to page here */
[self.webView loadHTMLString:page baseURL:nil];
I'd get the dom with JavaScript, manipulate, then inject back with JavaScript.
See stringByEvaluatingJavaScriptFromString:.
You can write your own full featured, minified JavaScript, then pass into using this method.
// Change body color of any HTML content inside a UIWebView.
NSString *javaScript = #"document.getElementByTagName('body').backgroundColor = '#888';";
[webView stringByEvaluatingJavaScriptFromString:javaScript];
I want to get URLs of all images or lets say "JPEG" files in a web directory (www.abcde.com/images). I just want their URLs in an array.. I couldnt manage that. Could u pls help me with this?
Thanks in advance..
Assuming you have access to an index file you could simply load via NSURL the whole html file and cut out the link lines. This however will not work (or hardly work) when you want to search ("spider or crawl") for links in more complex documents. On iOS i would suggest you use the simple, yet quite powerfull "hpple" framework (https://github.com/topfunky/hpple). It is used to parse html. You can search with it for certain html elements, such as <a href...> constructs.
a sample with hpple could looks like this:
NSURL *url = [NSURL URLWithString:#"whatver.com/images"];
NSData *data = [NSData url];
TFHpple *hppleParser = [TFHpple data];
NSString *images = #"//img"; // grabbs all image tags
NSArray *node = [hppleParser searchWithXPathQuery:images]
find a bigger example at http://www.raywenderlich.com/14172/how-to-parse-html-on-ios
Create a server side script(eg php) which gives you a list of all images in that directory as xml or json. From iOS send a request to that script get the xml or JSON parse it and use the image urls.
I'm displaying locally stored pdf in my iPad application. Here's the code:
NSString *path = [[NSBundle mainBundle] pathForResource:#"About Downloads" ofType:#"pdf"];
NSURL *targetURL = [NSURL fileURLWithPath:path];
NSURLRequest *request = [NSURLRequest requestWithURL:targetURL];
[pdfWebView loadRequest:request];
Now, by default, you can't copy text or images from the PDF which is rendered by the UIWebView. Is there a way to let users copy text and/or images out of pdf?
I'm not familiar with CATitledLayer, so i'm just wondering if it can help in this case?
There's no simple answer to this. PDF's are nested dictionaries composed of more dictionaries & arrays. You'll have to dig into CGPDFDocument. Voyeur is an excellent tool to use while digging around in PDF's. Reader is a good suggested starting point for rendering PDF's.
To get at the text in a PDF Document, I use PDF Kitten (https://github.com/KurtCode/PDFKitten). It works quite well, but as the author notes, is incomplete and does not support all font types.
I'm displaying locally stored pdf in my iPad application. Here's the code:
NSString *path = [[NSBundle mainBundle] pathForResource:#"About Downloads" ofType:#"pdf"];
NSURL *targetURL = [NSURL fileURLWithPath:path];
NSURLRequest *request = [NSURLRequest requestWithURL:targetURL];
[pdfWebView loadRequest:request];
Now, by default, you can't copy text or images from the PDF which is rendered by the UIWebView. Is there a way to let users copy text and/or images out of pdf?
I'm not familiar with CATitledLayer, so i'm just wondering if it can help in this case?
There's no simple answer to this. PDF's are nested dictionaries composed of more dictionaries & arrays. You'll have to dig into CGPDFDocument. Voyeur is an excellent tool to use while digging around in PDF's. Reader is a good suggested starting point for rendering PDF's.
To get at the text in a PDF Document, I use PDF Kitten (https://github.com/KurtCode/PDFKitten). It works quite well, but as the author notes, is incomplete and does not support all font types.