Is it possible to create a QR code that holds URL + data (numbers) that I can decode from my own app?
Also, I need it in such a way that if someone tries to scan it from a regular QR scanner it will only direct to the URL.
I am reading QR cards on my application to read data (there are few cards in different locations so reading the QR will tell me where the person is).
But I also want to do that if someone that does not have my app and randomly sees the QR code and tries to scan it with normal QR scanners it will redirect him to my app's URL..
Is this possible?
I tried something like this:
https://play.google.com/store/apps/<myapp> 123
and I simply seperate the first string from the second string to read the 123
But when I scan it with a QR reader it redirects to a broken link..
You should specify what programming language you are using.
Anyways, a solution would be to use GET parameters to be read by your app and not by the site.
Example:
www.yoursite.com/?location=Boston
If your app can read the variable location than you are good to go.
Of course the site will have to ignore it.
Related
I want to open my iOS application using a URL but my url appears to be too long? Is there a limit on the length of the URL? I've searched the web all day on this and it looks like there is no definitive answer. My url contains a base64EncodedString of an object and is about 1,500 bytes.
It looks like this:
MyApp://favorite?Class=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
I want to text or email this URL and then have the recipient tap on the link to open my app on their device.
The trouble is the link is wrapped in the mail and messages application and only the "MyApp://favorite?" part is marked in blue as a link. The remainder of the text is not part of the link.
Is there any way to send data like this via a URL?
This doesn't sound like it has anything to do with the URL itself or Swift. The problem you're describing is with "the mail and messages application." It sounds like you're sending the message in plaintext and relying on the data detector to find it. That's asking too much of the data detector, which is a heuristic guessing process. If you want to make it as a link, you should send it as an HTML mail, and mark it with <a href>.
Some notes on the format, though:
This data is double-base64-encoded, which is very wasteful. If you only encoded one time, this would be:
MyApp://favorite?Class=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
which saves over 350 bytes over your current approach.
If you run this through gzip before Base64-encoding it, it'd be a third of this size (~550 bytes). And using a binary format, you could probably get this down to ~200 bytes (after base64-encoding) without even getting clever.
That said, URLs are perfectly capable of handling data of this size. I suspect your problem is just asking heuristic systems to detect the URL rather than marking exactly where it is with HTML.
I want to build QR Code of a particular string/url. After building, without saving I want to display the display the image. I don't want to persist the image. Something like http://example.com/qrcode?code=LOL,
should display the QR code for the string LOL.
Platform : Ruby on Rails 4
Thanks.
The best way is to do the process somewhere other than your server.
I'd suggest either using an out of the box API like: http://goqr.me/api/
Or even do it on the browser (if it's a web app) like: https://github.com/davidshimjs/qrcodejs
Disclaimer: I have not used any of these.
All the best :)
I'm trying to enable translating some text in my app. I want user to be able to launch whichever translation tool they use on their device (Google Translate or iTranslate) and see the translation without having to type it. For this, I'm using the url schemes:
googletranslate://
itranslate://
Now, I need to pass the query to those apps. I know how to do this for iTranslate:
itranslate://translate?from=auto&to=en&text=<encoded_string>
This is cool, now I would like to know how to do the same for Google Translate. It needs to automatically detect the language and translate it to english.
It is not currently possible to prefill UI elements in the Google Translate iOS application when opening it from googletranslate:// URLs. The contents of the URL after googletranslate:// appear to be completely ignored. So the most you can get from using these links at the moment is opening the iOS application.
If this does get implemented at some point in the future, one can test by opening a link like googletranslate://example%20text/?param=value&from=zh_TW. I would strongly recommend that you let your voice be heard on the Google Translate product forum by requesting this feature.
In the meantime, you may want to consider using Translation API to provide translations within your application. This can be achieved using the REST API.
If is there anyone still looking for the answer, you can use it like this.
googletranslate://?sl=en&tl=tr&text=hello%20world
You can change the parameters
sl = source language
tl = translation language
text = the thing you want to translate
I've encountered an interesting solution to importing/exporting data through email. This particular solution doesn't involve attaching any files and also "encrypts" the information, such that it's not easy to decipher.
I'd like to know if anyone has an idea about how this is done.
Basically, this app allows you to export a custom-selected set of data by emailing you a link. The link is a URL scheme that opens the app and asks if you want to import the data. The data looks like it's encrypted, but I'm not sure. Below is an example of a link that the app generates. Does anyone know how this is accomplished?
Thank you!:
appofinterest://#;;bmFtZQ==;TmV3IFByb2ZpbGU=;;cHJvZmlsZVBob3Rv;/9j/4AAQSkZJRgABAQAAAQABAAD/4QBYRXhpZgAATU0AKgAAAAgAAgESAAMAAAABAAEAAIdpAAQAAAABAAAAJgAAAAAAA6ABAAMAAAABAAEAAKACAAQAAAABAAAAVKADAAQAAAABAAAAVAAAAAD/2wBDAAICAgICAQICAgICAgIDAwYEAwMDAwcFBQQGCAcICAgHCAgJCg0LCQkMCggICw8LDA0ODg4OCQsQEQ8OEQ0ODg7/2wBDAQICAgMDAwYEBAYOCQgJDg4ODg4ODg4ODg4ODg4ODg4ODg4ODg4ODg4ODg4ODg4ODg4ODg4ODg4ODg4ODg4ODg7/wAARCABUAFQDASIAAhEBAxEB/8QAHwAAAQUBAQEBAQEAAAAAAAAAAAECAwQFBgcICQoL/8QAtRAAAgEDAwIEAwUFBAQAAAF9AQIDAAQRBRIhMUEGE1FhByJxFDKBkaEII0KxwRVS0fAkM2JyggkKFhcYGRolJicoKSo0NTY3ODk6Q0RFRkdISUpTVFVWV1hZWmNkZWZnaGlqc3R1dnd4eXqDhIWGh4iJipKTlJWWl5iZmqKjpKWmp6ipqrKztLW2t7i5usLDxMXGx8jJytLT1NXW19jZ2uHi4+Tl5ufo6erx8vP09fb3+Pn6/8QAHwEAAwEBAQEBAQEBAQAAAAAAAAECAwQFBgcICQoL/8QAtREAAgECBAQDBAcFBAQAAQJ3AAECAxEEBSExBhJBUQdhcRMiMoEIFEKRobHBCSMzUvAVYnLRChYkNOEl8RcYGRomJygpKjU2Nzg5OkNERUZHSElKU1RVVldYWVpjZGVmZ2hpanN0dXZ3eHl6goOEhYaHiImKkpOUlZaXmJmaoqOkpaanqKmqsrO0tba3uLm6wsPExcbHyMnK0tPU1dbX2Nna4uPk5ebn6Onq8vP09fb3+Pn6/9oADAMBAAIRAxEAPwDtvKfBEiO0TEMhkIIx9OmSfX2q+0Aa2JNwLpOPLjD5A/PB/LPNdAlksdrtAiLDlAyEkj3/AM4/Kqt3YllCshgiZuEC7SW7k9P1r+QsLi04n7C8Nqc9ceVbWj3c7G2REJ+ST92oAyckk4Ax96vhD4p/tdaXp2tXGhfDLSJfFWrROY5b6fc1qh5BCgfM5B7jAr6P8d2F/wDFPxJefD3S9Z/sHwxbssXiPV4HPnTHqLWE+uPvHoM49a9n+G/wZ+FHgfwzb6X4X8N6dlABJczRCWaZv7zO3JNevHijLMst7eDqVHtBaJecn+i+Z6uB4OxuYx54yVOHdq7fov1Px4u/i/8AtO6+T9nutTs4WfiKx0tEC5PT7pPp1NXrfxd+1fZyR3Mtr4g1GFcMY7jSFdWHbOEBx9DX9Engzwb4Ss3EkmjWBU8lhAo7jvXS6xZ+GDFI5soIo1boIxnj6e1eq/E6Kj7mBh9//AOOXA9CNf2cq835pL/M/BLwh+0HZ32pR6T8QdFuvBmsEBI5Jo28iZ84OMjKc885HvXujojxGUFJY2Tcrrghgecj619mfFPwn8PPFPh2603W9B0fVLOXO6Oe2U/iGxkH3GK/PLVND/4UtrqWy6lc3/wzvrkx2k877pdJkbpG7dTEegY9O9epkHGeAzWr7JU3Sm9le6fo+/k/vM+IOBMXl2H+sRnzw66Wa9V2819xv3cWWB25b0PasC4twAAYxnnt3rrJhHLEZYvmicZVwQQV9fpWNNGXXr07mvt1Qsj86qHMNAQ5CqSB35oq9JFulJwPxNFH1c5+c/fLWv2c7KcSPoutywkjiO6iDD8x/hXx/wDtHeFPEfwY/Z81rxXeR2sjM0dhYSxSrte4mby4+Ovct07V+rBfivy7/wCCpmvpon7Kfwza5EzWH/CaLcXCRjO8xWszIv8A30RX49HI8JKtBUr3bWl9/L5n0+U53ip1o06jTT622+4+N/BOIntLC1V5ERcyu3Jd25dmPckkmvrTwhYWEd5bia9BmJy0ZYD3xX4map+1R4wt9PWx8OaTYaSq9ZApd2+rGp/C/wC1L8UbbxLBe6ldpcoDyqnbx9KK/hfmtS9eSj6X1/y/E/a8FxzlSthoN9r20R/QlJAlrCrLcMuRuUxyVp6nq3hS18Fu99qFhHdH7xmuQNv4Zr8dLb9sfVG8PGL/AElX2Y69D7e1fK/xI+NnjjxpqpkOtXdlbrkKkch6H6VjlvA2Nr1PZzXIu7/Q2zSvhaNNVPaOTWto9fU/X3xdLo2uzTJoev6ZM7n7ouB/jXyx8R9Ckm8A6lpOpxx3VjNGysjHcPUH86/MXStU8bxax5+k6pqkrI25/LdsV7f4J+JniR/EUGm6xq9xJbzv5U9rcElDnoeehB7jFe6/Dqrlz9tRrqXLra1npr5nnrjSGNg6NWi4p6Xvc9d+E2uS6l8MbrSryd5b3R7prRpW5Zo85jJJ77ePwr0GcgRkA7eO9fPXwtvP7M+OfxG0xn2qXjkReo6nkfn+te3z6gmDlsjHrX61GzhGXdJ/ej8ExtHkrTguja+5kEpXzjkUVkS3+JjiRR+NFV7NHBZn9SqsGXggj2r4B/4KR+EIvFH/AATou9QMRkn0LWIb1W252KyvEx+n7wV6T+y78eLj4y/BG813UJLOTU7b7Ot+1vKuxbl4t0saRglkjU4CsxO7nBIXJz/2w7ttc/YT8V+GYJFjm1uSCyRz2zKHJ/JDX8//ANoSwuJjGp7soyV/v/yPpMqy2s8dTjFX1X4n8pms3Wn6ZHcRQ2Md5KmN7u33SfQVzemS3uo6vBaWdjPNdzyBYYYULM5PQAdTX6OJ+yho76jb/wBpatLKueViVQSOvoTXtXhP4U/Dz4abNR0rSbQ60fljvrob5VJ/u56fhzX6TiPErK8Ph2qUXUn9y/H9D9PwXhxmeIrqc6ipw9NS9+zj+yToV7+zhrdx8RLCG41y+sDMIiSHtBgbVz/eGc59a/Pr40fArx38MfiTd2lvpF/rmgMxNjqFtA0iMpPAfH3WHev3S+Fs93d+ANfZXJYaa7PkgfKCOleWz+Jv7J8VbLpY7m1mbAjlTI+nNfmeV8dZjhcXLETXOp3vF7eVu1tvzP0XE8I4fGU6mGjLl5LWa321v3ufh1p/h34uaNEt9pNrfaXbuoL+bKkJ5/2WYEj8K6fw94D+JHjXxkLwaJcXQSRfOvo0XZkdcsvGeK/b690jwrr+im6vtKsp4icNDLaq6g+wINNgg8NaT4fks9K062sbcjKxxxhR+lfUYjxLnUg3DDRUn1Pn6fh1GlK7xE5Ls2rH47Xeiax4X+Pnip7a1llBtLUOehzs5/UGrE3jCeBStyksDDs4Ir6P+MunXrfGmG80aWJdGngJ1W3AGXZciNx34LY/EV4LrGlRTwyKygj6V9TlWeSr0acpW2S+5W/ryPyziXJIYXFzjfdt/e2cbcfEPTorkpLeRRtj7pYUV4T4u8H6x/wms5srJ5rcqCCnQdeKK++oYfDTpxk6qV/NH59VlUjNxUL2P6jvgH8DfD37PCfEDRvBkzQeDdb1WG90rTJJHlksAsASRWkclnLPuYEngYFcN+2P4muNE/Zt0XVFd/s0WvRicg9AY5AP1r3mO9it7OC3gysMaBI1yTgDgcnk188/tWacPEX7CHjuErvls7dL2L1BidST/wB8lq/k6liJ4zMYTxEuZyaTfV7I/WcBCOFqRnBbHx34V8a6TqdktwZDJL1X5881x/xI+Idt4CFt4x1DR5das4naOzhY7Y1mIJDEd8AHFfM3wq1O6HikWkkxW3zy2eAK98+LfhdPih8MtE8MaHqEEN1bXPnFXO5X+Xbzj619NPJsNhMzhTrv923q+y+R+u4PPqlfLZzpfxEtF5nhVr+2N44DyTWJhgheQkxE7Sg9CPSuz8C/tU6h408QQeDtZ8PpqFzf6hHHb3SkIUdmAUr7jNeK3/7JPxlj1yzg0vw1HrNndS7I720u4/KQ995LZT8a98+HX7Llr8NfH2h+LPHmuLPqGn3K3C2NjtaJZFOQDJn5gD6Cvtc1wvCVLCScGnJr3Um27/L9T5rKs34oqYqEaqtFP3m0lp5f8A+3jrN34diaxvXIdF4J7j1rwL4jfGG20LTp8TIshXaAG6+9dr4x8c+GtfjlEV7G1wqHaQ+MHpX52fEx7vUPFkyPO0sKMdrA18Rwxk6xdZKsrJH1vEmffV6HNSd2z6w/Z/1rRfij8X/E+i+Lxe23hu70ofbtTtYxI+nRrIJPNAI5yyIuB2YntXvevfsn+ANSjkn8GfHTwbeKVzHBqIa1lPoDkkZ/KvO/+CbPgbSPGXiT46W+oWv2rVLXwSW01mkYeVI7shbaDhjjgZBxk49ai1SFoLqWJvldGKtnsRX7Tg8uwmAwt5UVJTbtq01ZJH818RZhXxuNajUcZQSvomndt3PLvFf7MvjvQ/FrWUUNjrkRiWRLvT7yGSFgc8A7+cY9BRXWtJNvOJJAPTcaKvmwb2pv/wAC/wCAeGniUtai+7/gn6sreZIJ/LvWD4w05fE3wp8SeH3wV1HTJ7UDtl4yo/UikNwdgIGV9aT7Rzkk1/MVGSi1LqfpcZH8/E11feFLvW7Yq8N7aSPHIp4IZSVIP4ivOLjx98R9Qt54bS+l0y1nODOH8rj03dfyr9Kv2qf2Y/FufEPxs8FaLLq3gye4x4his490mnTFQWmZByYWyCWH3WJzgHNfmldabquoWbWMNs0iDPlYHFf0bkssNXoQr1Ka95J3kv66nmTxNZycKdRq3SLNrQpviRZ6b/ZmnfEq0sNNvz/pTf2yyInqWH3vyHNXLm58aeG9TeDSPi1pusoeq/aJjG3pw4615Wvg3xVc3Rhg0LVZJAcbRA1eieHfhH4yhb+1dY0s6fYwjcouGBZ27DaDn8TXr4uGDpRcpzhr05Y6ndh8yrVkqUadT19pKy/BL7y0urfEnSLwXmryQy2MzB3eKRSp9/XvT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You could just convert your data to base64 (which is the case here*). Remember that URI are not (practically) unlimited in length and might, like the link you posted, be a little meaningless for your users.
(*) in the case you posted, the data is separated by semi-columns, for example "TmV3IFByb2ZpbGU=" is base64 for New Profile, and the big chunk in the middle is a base64 encoded PNG. Absolutely not secure - since it's not encrypted in any way, but could be fairly easily
I want to generate QR codes in ruby on rails, to run in the background of my website written in rails. Saw this http://code.google.com/p/qrcode-rails/ but cannot work out how I could get this to work for me. Basically in RoR I want to:
Pass a generator a string, my unique code, a 20 character length number (e.g. 32032928889998887776) and have an image generated with the name 'code'_qr.jpg and saved in a resource folder to be attached to an email that my program will send out.
How would I do this, does anyone know?
And while I'm asking (not so important that I get this answer now) but how would I implement QR code reading in, to get that code back, from a web cam? Thanks.
If you just need to write the data from the URL to a file, you can open up a stream, read from the file, and simply write the data to disk -- just remember to use the same extension (.jpg in this instance.)
Note that you could also simply send the link in the email (or post it as an inline image in the email.) If you really, really want to write it to disk and send it as attachment in your production system, the first-class solution for Ruby image processing is ruby-vips or ImageMagick.
Finally, since it's a disk operation, you're going to want to do it outside the normal web request cycle -- you're probably best off farming the operation out with delayed_job, or at the very least triggering the process with an AJAX request. Both of these give you the advantage that you can present a progress bar for the operation.