If I have a file name like this how do I get the path extension?
http://example.com/image.png?key=value
If I use -pathExtension for NSString it returns jpg?key=value.
I want to get the true extension from the path so just jpg.
Try your code in swift. It works fine.
let url = URL(string: "http://example.com/image.png?key=value")
print(url?.pathExtension) //Optional("png")
Try this:
NSURL *url = [NSURL URLWithString:#"http://example.com/image.png?key=value"];
NSString *ext = [[url lastPathComponent] pathExtension];
NSLog(#"%#", ext) ; // png
Related
I am Developing a custom keyboard with Keyboard Extension.
I want to copy video from my resource folder to UIPasteboard. For that i am using below code but no luck
NSBundle *bundle = [NSBundle mainBundle];
NSString *moviePath = [bundle pathForResource:#"SampleVideo_1280x720_1mb" ofType:#"mp4"];
NSURL *movieURL = [NSURL fileURLWithPath:moviePath];
NSData *data = [NSData dataWithContentsOfURL:movieURL];
[[UIPasteboard generalPasteboard]setPersistent:YES];
[[UIPasteboard generalPasteboard] setData:data forPasteboardType:(NSString *)kUTTypeVideo];
Can you please help me this?
And one more thing is it Possible to do?
Thanks in advance.
The pasteboardType you are using (kUTTypeVideo) is for a type of movie that has no sound. This will not work. If you copied an mp4 file to the pasteboard using that pasteboardType, and then say, pasted it into an iMessage chat field, it'll show that it's an unknown and unplayable format.
Instead, use kUTTypeQuickTimeMovie or kUTTypeMPEG4. This will work.
Also, no need to setPersistent to Yes; this is the general pasteboard which is a system pasteboard that transcends the space-time of any app, and so you don't need to do that. :)
Try this code. It worked for me.
let pb = UIPasteboard.generalPasteboard()
let url: NSURL = NSBundle.mainBundle().URLForResource("\(tempArray[indexPath.row])", withExtension: "mp4")!
let data1: NSData = try! NSData(contentsOfURL: url, options: NSDataReadingOptions.DataReadingMappedIfSafe)
let data: NSData = NSData(contentsOfURL: url)!
print(data)
pb.persistent = true
pb.setData(data1, forPasteboardType: "public.mpeg-4")
And also if u want to get the URL of the video from the NSBundle you need to add the video locally.
Suppose you have a URL that looks like http://localhost:5867 and your wanted to append '/something' to the url. How do I append segments to this URL?
I am trying this:
//_baseURL is NSURL* and documentid is NSString*
NSURL* url = [_baseURL URLByAppendingPathComponent:documentid];
Oddly.. xcode(4.6.2) will not output the resulting URL to console.
NSLog(#"%#", [url absoluteString]);//nothing output
Thanks!
Edit
I am working in a workspace. The code that I am debugging is a static lib which is in the workspace. Could this be the culprit of all this weirdness??
Fixed
I think the reason I was having problems was because my workspace was not configured correctly and I was actually executing an older version of my static lib. This explains why I wasn't getting NSLog'ing and why the result were unexpected. I found this post which helped me understand the workspace and how to configure it for a static library. Thanks a lot for everyone's time!
There is a class message,
+ (id)URLWithString:(NSString *)URLString relativeToURL:(NSURL *)baseURL
So,
NSURL *base = [NSURL URLWithString: #"http://localhost:5867"];
NSURL *child = [NSURL URLWithString: #"something" relativeToURL:base];
NSURL *base = [NSURL URLWithString:#"http://localhost:5867"];
NSURL *url = [base URLByAppendingPathComponent:#"something"];
NSLog(#"%#", [url absoluteString]);
This works for me and prints http://localhost:5867/something, so check your variables (maybe one of them is nil or an empty string?).
I'm wanting to use QLPreviewController to display ALAssets from the Photo Stream
QLPreviewController needs an NSURL to display the item
This works great when it is a File URL such as
/var/mobile/Applications/5374......9E0/Documents/image33.png
I have the ALAsset
However using [[asset defaultRepresentation] url] gives me a NSURL type
assets-library://asset/asset.JPG?id=00000000-0000-0000-0000-000000000075&ext=JPG
But this does not display QLPreviewController just keeps showing loading ??
Any ideas ?
Thanks in advance
Maybe not the fastest and most efficient way, but it solves the problem. Please use NSFilemanager instead NSTemporaryDirectory as in documentation :-) Make sure to link against ImageIO.framework
#import <ImageIO/ImageIO.h>
....
NSURL *outURLToUseWithQLPreviewController = nil;
ALAsset *myAsset = ... // received somehow
ALAssetRepresentation *represent = myAsset.defaultRepresentation;
CGImageRef representFullScreen = represent.fullScreenImage;
NSString *tempDir = NSTemporaryDirectory();
NSString *imagePath = [tempDir stringByAppendingPathComponent:represent.filename];
NSURL *tempURL = [NSURL fileURLWithPath:imagePath];
CGImageDestinationRef destination = CGImageDestinationCreateWithURL((__bridge CFURLRef)(tempURL), (__bridge CFStringRef)(represent.UTI), 1, NULL);
CGImageDestinationAddImage(destination, representFullScreen, nil);
if ( CGImageDestinationFinalize(destination) ) {
outURLToUseWithQLPreviewController = tempURL;
}
return outURLToUseWithQLPreviewController;
I have an NSURL of the form
"http://abc.def.com:1234/stuff/"
and I want to append to it so the final url is like this
"http://abc.def.com:1234/stuff/?x=123".
But if I do this
url = [NSURL URLWithString:#"http://abc.def.com:1234/stuff/?"];
url = [url URLByAppendingPathComponent:#"x=123"];
Then the result is
http://abc.def.com:1234/stuff/x=123?
(its the same result if URLByAppendingPathExtension is used).
But if I do this
url = [NSURL URLWithString:#"http://abc.def.com:1234/stuff/?"];
url = [url URLByAppendingPathComponent:#"x=123"];
Then the result is
http://abc.def.com:1234/stuff/%3Fx=123
(also the same result if URLByAppendingPathExtension is used).
Neither of which is what I am after. How do I get a final result of "http://abc.def.com:1234/stuff/?x=123" ?
I think the simplest answer here is to create a new URL using the old one as the base URL.
url = [NSURL URLWithString:#"?x=123" relativeToURL:url]
Here is a unit test that checks the logic
- (void)testCreatingQueryURLfromBaseURL
{
NSURL *url = [NSURL URLWithString:#"http://foo.com/bar/baz"];
url = [NSURL URLWithString:#"?x=1&y=2&z=3" relativeToURL:url];
STAssertEqualObjects([url absoluteString], #"http://foo.com/bar/baz?x=1&y=2&z=3", nil);
}
Create your actual NSURL object last, from an NSString that you build up as needed:
NSString *urlString = #"http://www.site.com/";
if (some condition)
urlString = [urlString stringByAppendingString:#"?x=123"];
NSURL *url = [NSURL URLWithString:urlString];
My code is like this :
NSString *urlStr = [NSString stringWithFormat:#"https://xxx.xxx.xx.xx/Pages/Service/FMService.svc/FileAudit?user=%#&pass=%#&fileId=%d&isAudited=1&opinion=%#",appDelegate.user.userName,appDelegate.user.password,self.todo.fileId,self.opinion];
NSLog(#"URL=%#",urlStr);
NSURL *url = [NSURL URLWithString:urlStr];
And the url = (NSURL *) 0*00000000#"< nil >"
how can I work it out? thank you in advance!
For debugging purposes, I would build up urlStr piece by piece instead of combining five NSStrings all at once. Put in an NSLog(#"%#", urlStr) statement after each addition to urlStr. This will reveal which piece of the puzzle is causing the problem.