I am using the following code to populate a webView in my Mac app...
NSURL *url = [NSURL URLWithString:#"https://joeworkman.net"];
[self setMainFrameURL:[url absoluteString]];
I would like to be able to capture when there are errors loading this URL and then instead load a local HTML file stored within my app. This way the users gets presented with a presentable error instead of an ugly 500 server error (if that was the case). Not to mention that most users would not know what that meant anyhow.
Related
I am working on an existing project where UIWebview is used to load html string to load js files for loading contents downloaded from our server.Currently UIWebview is not able to load the contents in IOS which is perfectly loading in Android.
I have tried to switch to WKWebView but still no luck.
self.webContentView.delegate = self;
NSString* html = [player getHTMLString];
NSString* baseURL = [player getBaseURLPath];
[self.pageLoadingActivity startAnimating];
[self.webContentView loadHTMLString:html baseURL: [NSURL URLWithString: baseURL]];
EDIT------
After debugging sometime I found I was getting two 1100 error.
It seemed like two file were missing or app was not able to read them.
Now whenever I am hitting shouldStartLoadWithRequest with
request
URL:
file:///Users/ealpha4tech/Library/Developer/CoreSimulator/Devices/2CA71983-9996-44D6-944F-34E3EAFAE96D/data/Containers/Data/Application/6A19ABBA-CB68-4EE4-AC02-6AD3CB8A5A68/Documents/icplayer/icplayer/D2D6AFFF93CB2CFCB1640484F5429D89.cache.html
I am getting 1100 error.(the above file is present though)
So as a guess, I would say [player getHTMLString] is the problem.
NSURLErrorFileDoesNotExist: The specified file doesn’t exist.
This is a local file error.
I'm guessing that -getHTMLString is trying to load a file out of the app, but that file is not being included in the app.
I could help more if you provide 2 things.
Provide the source for -getHTMLString
Use NSLog() to print value of [player getBaseURLPath].
UPDATE
In looking at your output, I noticed …ments/icplayer/icplayer/D2D6A…. I think the proper path should only have one icplayer not two. Look to see if it's getting repeated somehow.
Right now I am developing a macOS WebApp, this includes a WKWebview.
However, when I want to upload or download a file, it doesn't work. When I click, nothing happens! Like, nothing. I click on for example on “choose file” or any other upload button, and the window that should appear to select a file or directory doesn’t show up.
I have been struggling all day long, checking stackoverflow and many other resources and I found many posts related to my problem, but they are all out-dated.
My code is really simple;
- (void)viewDidLoad {
[super viewDidLoad];
// Load the url into the webview
NSURL *url = [NSURL URLWithString:#"https://www.my-website-url.com"];
[self.myView loadRequest:[NSURLRequest requestWithURL:url]];
}
So basically all I want is that I can download and upload files to and from my WKWebView.
It is NOT a duplicate question because I still don't get how to implement the code that Willeke is referring to in the comments.
I have an app that incorporates weather...data that I receive from Google's weather API. I'm busting my brain trying to figure out a problem that I'm having and I've been unsuccessful so I figured it was time to ask around on here.
Here is my code:
query = [[NSString stringWithFormat:#"%#",query] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSLog(#"query: %#",query);
// SET GOOGLE WEATHER XML LOCATION
CXMLDocument *parse = [[CXMLDocument alloc]initWithContentsOfURL:[NSURL URLWithString:[NSString stringWithFormat:#"http://www.google.com/ig/api?weather=%#", query]]options:0 error:nil];
NSLog(#"URL: %#", parse);
The query variable holds my reverse geocoder location (e.g. Chicago,IL) for which I append it to the Google URL to get the XML back.
As you can see I'm logging out both the query and the parse variables. I can see that I'm getting a legit query location for my current location when the code is executed, but by the time I log the parse variable I get nothing. The parse logging shows null...nothing was returned from Google. I can see that the URL is correct and I can even go to my browser and get the data I need by using the same logged link.
Interestingly enough...it works perfectly in the simulator and it also works just fine on my iPhone running 5.1.1. I do have iOS6b4 installed on my iPad which is giving the issue, but since I'm not using any new code that was introduced in iOS6 it shouldn't cause any issues here.
Any ideas as to why the XML parsing refuses to work on a wi-fi only iPad?
BTW, before anyone tells me to start using NSXMLParser instead of TouchXML...I do have a test version that runs NSXMLParser instead and I'm getting the same issue there as well. I'm at a loss.
I finally figured this out...it actually had to do with the locationManager.
I had the following code:
if ([locationManager respondsToSelector:#selector(startMonitoringSignificantLocationChanges)]) {
[locationManager startMonitoringSignificantLocationChanges]; }
else {
[locationManager startUpdatingLocation]; }
Getting rid of the if/else statement and just going with the following resolved it:
[locationManager startUpdatingLocation];
I'm loading a rather simple XML file from a URL. I wanted to show the network activity indicator while the parser is loading the file, but obviously not while it is parsing.
Question: Does the initWithContentsOfUrl: method lock program execution while the document is loaded from the url? In other words, is the code below correct?
It seems obvious to me that this is okay, but I wanted to make 100% sure.
NSString* const urlString = #"...";
NSURL* url = [NSURL URLWithString:urlString];
[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES];
NSXMLParser* parser = [[NSXMLParser alloc] initWithContentsOfURL:url];
[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
This article explains it pretty well http://akosma.com/2010/05/28/initwithcontentsofurl-methods-considered-harmful/:
The main problem with these methods, of course, is the fact that they
are synchronous; this means that the thread executing them (usually
the UI thread) will block completely until they return, and in most
applications this means that you are de-facto blocking the whole
application for an unknown amount of time. This means that no buttons
or UI widgets will react to input, no navigation will be possible, no
touch events will be delivered or executed, nothing will happen at all
until the network operation completes.
Even worse; when using initWithContentsOfURL:, there is no timeout,
there is no meaningful feedback for network failures, and no way for
the user to cancel the current network operation. This last factor
justifies by itself not using initWithContentsOfURL: at all; you must
never ship code that leads to a bad user experience. Your users will
resent this and will complain!
If you want to display download progress, you will need to download the file yourself using something like NSURLConnection, then pass the local file path to the XML parser.
Yes, it does block. So your activity indocator won't be displayed.
(Note: The code here is Monotouch/C#, however Objective-C Answers are welcome!)
Im using AVPlayer as my app plays iPod library files as well as local mp3/m4a files. The playback of iPod library files is fine, however I cannot seem to get the AVPlayer to play local mp3 files.
For example, this code works:
NSUrl url;
AVAudioPlayer player2;
url = NSUrl.FromFilename(Path.Combine(Constants.TrackCacheLocation , songPath));
/* The url variable has the value file://localhost/private/var/mobile/Applications/B1ED2576-4398-43F3-8573-2FA3A0342265/Documents/Cache/Remote/dcaad4ff-452e-4d91-8788-c018e6b286f2.mp3 */
player2 = AVAudioPlayer.FromUrl(url);
player2.Play();
The above works fine, note that it's using AVAudioPlayer.
This doesn't (using AVPlayer):
NSUrl url;
AVPlayer player2;
url = NSUrl.FromFilename(Path.Combine(Constants.TrackCacheLocation , songPath));
/* The url variable has the value file://localhost/private/var/mobile/Applications/B1ED2576-4398-43F3-8573-2FA3A0342265/Documents/Cache/Remote/dcaad4ff-452e-4d91-8788-c018e6b286f2.mp3 */
player2 = AVPlayer.FromUrl(url);
player2.Play();
Creating an NSUrl from a local or remote web server also works (with AVPlayer), eg: http://10.0.0.1/testing/test.mp3 delays about a second or two while loading, then starts to play fine. I have a feeling im not creating my NSUrl correctly (even though it works fine for AVAudioPlayer). Any one any have ideas what could be going wrong?
Also, if I check the CurrentItem.Status of the AVPlayer it remains Unknown, it never changes to ReadyToPlay
Many API that uses NSUrl or NSUrlRequest parameters are async by design and will have issues (or even crash) if defined as a local variable (e.g. that will be collected when your method returns when still needed by the native code).
You code above does not supply enough information about where they are created. If you're using local variables then try to promote them as fields and ensure they will exists (e.g. don't re-assign them) until you don't need the AVPlayer anymore.