WKWebView with local file

Question

I'm testing the WKWebView with local file, which is working in the simulator but it is not working in the device

 @interface EDPresentationViewController ()<WKNavigationDelegate,WKScriptMessageHandler>


     @property(nonatomic,strong)WKWebView *webView;

     @property(nonatomic,strong)EDPresentationController *presentationController;

 @end


@implementation EDPresentationViewController

-(void)viewDidLoad
{
    [super viewDidLoad];

    self.presentationController = [[EDPresentationController alloc]init];

    WKWebViewConfiguration *webConfiguration = [[WKWebViewConfiguration alloc]init];
    self.webView = [[WKWebView alloc]initWithFrame:self.view.frame configuration:webConfiguration];

    NSURL *presentationFolder = [self.presentationController url];
    NSURLRequest *request = [NSURLRequest requestWithURL:presentationFolder];

    [self.webView loadRequest:request];
}

I grant the url from:

    NSURL *presentationFolder = [self.presentationController url];

is ok, because I tested the same code with a UIWebview and works!

I always get the same error:

Could not create a sandbox extension for '/'

This wasn't work, I guess it would work in Objective-C as in swift

iOS Webkit not working on device, but works on simulator at swift

Any idea will be appreciated, thanks

---

Update 2-12-2014

I've discovered this could be a bug in iOS 8.1 and it may be fixed in 8.2

https://devforums.apple.com/thread/247777?start=25&tstart=0

I've tested moving the files to the temporary folder and I didn't get any error but the webView is just empty.

I've tested the same code (temporary folder) with a UIWebView and works fine!

Also, I've tried this:

https://stackoverflow.com/a/26054170/426180

As I could find out, this works because the css and the javascript is embebed in the html.

Answer 1

Try XWebView which has a very tiny embedded http server. It's much smaller than the GCDWebServer. A loadFileURL:allowingReadAccessToURL method is added through extension, so you are not aware of the server.

Answer 2

This worked like a charm ...

@interface ViewController () <WKScriptMessageHandler, WKNavigationDelegate>

...

WKWebViewConfiguration *configuration = [[WKWebViewConfiguration alloc] init];
WKUserContentController *controller = [[WKUserContentController alloc] init];

configuration.userContentController = controller;
[configuration.preferences setValue:@"TRUE" forKey:@"allowFileAccessFromFileURLs"];
self.webView = [[WKWebView alloc] initWithFrame:[UIScreen mainScreen].bounds configuration:configuration];
self.webView.navigationDelegate = self;
// Also if you'd have bouncing problem
self.webView.scrollView.bounces = false;
self.webView.scrollView.alwaysBounceVertical = false;
[self.view addSubview:self.webView];

NSString* productURL = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"htmlapp/home.html"];
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL fileURLWithPath:productURL]];
[self.webView loadRequest:request];