I am developing a share extension for iOS 8 and it seem like i can run javascript code on page to grab some information like markup of the mage
But on the apple document it says that javascript code must be inside a .js file but my javascript code is coming from server and it is dynamic.
Is it possible to run javascript i downloaded from server or can I change js file contents everytime I need to use it?
You can't do this using the built-in support in the current share extension system.
The Javascript file needs to be listed by name in the extension's Info.plist, in the value of the NSExtensionJavaScriptPreprocessingFile key. The file named there needs to exist in the app extension's bundle. But bundles are not writeable, so you can't replace or change the file.
You might be able to do something like you describe if you:
Include a basic JS file that just returns the entire page source to your extension.
Use JavaScriptCore.framework to further process that data in your extension.
I don't know of any reason why that wouldn't work, but I haven't tried it, and it's kind of unusual. Still, given your needs, it's worth investigating.
Related
I am developing a WebExtension for Firefox. In order to post my extension, it must not have any remote scripts in it.
In order to display some tweets in my extension's menu, I have used the Twitter-Post-Fetcher library, but I can't post my extension with it because the library uses remote scripts from twitter.com.
I prefer not to use the Twitter API if possible, because the requests would come from the extension's users.
No remote scripts means that if you are going execute code in the context of your extension, then the code must be included in the extension package, not hosted on some server. While there may be other ways to accomplish this (e.g. running the code in the page context, which may be acceptable, but may not), the default way to accomplish this is to: download the code that you are executing and use a copy that you include in the extension package.
This is the case for all code, including libraries such as jQuery. It is highly recommended that the code be an exact byte-by-byte copy of code that can be downloaded from a public repository, and that you indicate within your extension package the exact URL you used to obtain the code.
The reason for this is security. If downloading code at runtime was permitted, then that code could be trivially changed at any time. It would mean that having the add-on reviewed by Mozilla would be of no benefit.
Please see the Review Policies page on MDN, and all the pages linked from there, for more details.
Can someone show a complete example of application cache with html, css, js, appcache file including CACHE, NETWORK and FALLBACK section. Also updating the manifest. Where should the coding be written?
http://www.html5rocks.com/en/tutorials/appcache/beginner/#toc-updating-cache
As per updating cache from the above link, where should the coding been written?
The code for updating the manifest is written by your sever somewhere.
Either in PHP or Node.js you must write and serve this file with the correct mime type as specified in the link you posted.
You can auto generate this from the css and js files on your server. Don't include html files unless they are dynamic pages.
The first line in the file must be CACHE MANIFEST
Now it assumes your are putting things into the CACHE section, which is where you need to include all the paths to your css and js that you want the user to be able to use offline.
To create a NETWORK section, simply print out the word on it's own line.
Under this section you should include pages that should only be used online.
Under the FALLBACK section include a page to show if there is no offline version available.
This is a brief explanation but you should be able to easily find a tutorial that will help you auto generate this file.
For more details about the cache manifest itself:
http://diveintohtml5.info/offline.html
Offers the best explanation IMHO.
I am using grails 2.0.1 and i tried linking to the html page using with the direct url="somefile.html> but it is not working out . How do i do it ?please help
You need to do two things:
Make sure the file is stored under web-app/somefile.html, this is where you store raw files for the server.
Instead of using a hard-coded URL, use the g.resource() method or the <g:resource> tag. In these cases, you'll use it like so:
My Link
The reason to use the g.resource tag is it guarantees a correct link to the file. If you just hard code the file like href="somefile.html", then is is a relative path. If you are at the URI myapp/controller/action/foo, it will look for the file under myapp/controller/action/somefile.html.
Note: If you are using the cached-resources plugin or something similar, you will find the output URL is not actually myapp/somefile.html. The file is still accessible from that location, but the generated links will point to a static URL instead.
I understand the basic of Document Interaction Programming and UIDocumentInteractionController and I've got it working in my app. However I'm having trouble with specific details of using custom file types. I can't find this addressed in the Apple docs anywhere.
My app uses it's own file types with unique extensions. The files themselves are just plists (xml), but I want the device to treat the files as only openable in my app. Originally I implemented the Document Interaction stuff to treat them as XML while I got it working, but now I want it to treat them as binary files that it needs to hand off to my app.
At the moment, if you have one of my files in an email attachment, iOS first shows the QuickLook (which just spews all the text content of the xml out) before you can choose to Open In. Similarly if one of my files is opened with Safari, Safari just shows the XML and doesn't give you the option to show it in my app at all.
So how do I get iOS to not treat my files as XML? I've changed the "Conforms to UTI" value and "public.mime-type" value in the info.plist, but it seems to have no effect.
Any tips greatly appreciated.
As far as i understand the UIT concept of Apple you cannot just change the file extension to change a potential UIT of the file. If the file contains XML-Data, other apps as well as internal apps might recognize your content and show it internally as XML.
Try to store your Plists with NSPropertyListSerialization NSPropertyListBinaryFormat_v1_0 (then you readble XML)
When you did that without success, why not trying this:
use zlib to compress the XML plists afterwards to a zipped file.
make a "unique" file extensions (<file>.myappname)
this should "hide" other apps and quick view.
Tell me if one of the ways did work for you.
I am using appfile:/. The path is correct; if I put it on screen and copy-paste it in the explorer it links to the image.
Is there anything else I need to do?
UPDATED I have updated the library, now is more easy to use. Can you test it?
I am the author of the StageWebViewBridge class. There is a known problem if you are using Android. Anyway, I have a working solution I will update the next week.
If the problem is not in Android, then send me some code.
I am also confused on how to access locally packaged assets. I put them in the HTML folder as requested and when I send a signal to the StageWebViewBridge to set the .src attribute of a video I'm not sure how to do it.
Without StageWebViewBridge and entirely in a website I can just reference the file for a video object via JavaScript directly e.g. swvRef.src = 'file.mp4';. This works perfectly fine. When I try to tell flash to send a call via StageWebViewBridge it does receive the call to the StageWebView (I have JavaScript reporting it). However when I try to set the .src of a video object I can't figure out the correct path.
The documentation says to put all things in a 'html' folder. I did so. No reference to a .src of 'html/a.mp4' or 'a.mp4' or 'htmlCache/a.mp4' ever makes the new javascript html5 video class work.
Bridge otherwise is working perfectly sending AS->JS and JS->AS. I'm just looking for info on how to reference packaged files. I want to play a video I put in the /html folder and so far, I just can't do it.
Got the same issue and fixed it with "appfile:/"
Why do you require "appfile:/ for a local html file ?
If the treated html/js/css is local and asset is relative (aka ../ or no http://) you should treat them as "appfile:/" ?
If the treated file is distant you do not have to handle assets ?
Is there a best practice to work with "appfile:/" ?
Actually I debug my html/js/css game in the browser but if I use appfile:/ it will no longer works. I will have to handle 2 behaviors.