I want to delete image upload to Cloudinary to Android side, on the documentation https://github.com/cloudinary/cloudinary_java/tree/master/cloudinary-android I can't see that.
You can delete the cloudinary image from android client application with the below code:
Cloudinary cloudinary=new Cloudinary(CLOUDINARY_URL)
Map deleteParams = ObjectUtils.asMap("invalidate", true );
cloudinary.uploader().destroy("public_id",deleteParams );
Make sure you have a valid image public_id.
Deleting images requires using a signed authenticated API, the signature is based on your account's api_secret which must be excluded from your client-side code, and therefore should be done on your server-side. So you can make a request from the Android app, which requests the server perform the deletion request.
Related
I am working on an android application, in which we are required to upload an encrypted file to a server using VPN network on a mobile device. I have the method to encrypt the file, but I have no information how to upload a particular file to a remote server. Kindly suggest me some method to upload a particular file to the server. Also suggest me how to calculate the upload time.
Thanks!
Try this code $upload_time = time() - $_SERVER['REQUEST_TIME'];.The result will be in seconds
I want to create an app that autocompletes a destination text box. I read this documentation about it:
Adding Place Autocomplete to your Android App
However it says that you can't use your API key internally and that you must instead access an external web service to make the autocomplete submission and return the results to your app. I then came across this:
Place Autocomplete in response to an HTTP request
This states that you can make a request with your API key as part of the URL for the HTTP request. Can you do this internally from your app or would you have to submit that HTTP request from an external web service as well? If you can just make this HTTP request from within the app, how would I go about doing this?
Try this solution:
1) Get an application's API key from the Google console.
Create Api Key
2) Use this module from GitHub to make Google Place Auto Complete. It's easy to integrate: Android GooglePlaceAutoComplete
I am trying to develop a Moodle Android app. I am using MoodleREST source code for my reference. But rest code to upload assignment is not provided by this library. I want to be able to upload assignment from mobile client with a webservice call. Uploading assignment using a webview is possible but in that case user need to login again to access upload assignment page.
I have found something similar here https://moodle.org/mod/forum/discuss.php?d=207875.
I am new to moodle and still learning it, so my question can be a little naive so please bear with it :)
It is kind of possible to upload a submission with a file to the assignment using Moodle webservices.
First upload a file to draft using core_files_upload
http://my-moodle-url/moodle/webservice/rest/server.php?wstoken=token_value_xyz&moodlewsrestformat=json&wsfunction=core_files_upload&component=user&filearea=draft&itemid=0&filepath=/&filename=test2.txt&filecontent=TWFuIGlzIGRpc3Rpbmd1aXNoZWQ=&contextlevel=user&instanceid=8
where:
itemid=0 - moodle will generate and return an itemid or you set itemid
filecontent - base64 encoded file contents
instanceid - userId whose is webservices token
Sample response:
{
"contextid": 26,
"component": "user",
"filearea": "draft",
"itemid": 293005570,
"filepath": "/",
"filename": "test3.txt",
"url": "http://my-moodle-url/moodle/draftfile.php/26/user/draft/293005570/test3.txt"
}
You can search for an assignment id for the next call with mod_assign_get_assignments
Then use itemid received, here "293005570", in mod_assign_save_submission
http://my-moodle-url/moodle/webservice/rest/server.php?wstoken=token_value_xyz&moodlewsrestformat=json&wsfunction=mod_assign_save_submission&assignmentid=5&plugindata[onlinetext_editor][text]
=some_text_here&plugindata[onlinetext_editor][format]
=1&plugindata[onlinetext_editor][itemid]=521767865&plugindata[files_filemanager]=521767865
This will add an assignment submission with this file.
The problem I could core_files_upload and mod_assign_save_submission only using a webservices token for a particular user, i.e. each user needs a webservices token which might be not practical. With a webservices user token I get on the first call:
{
"exception": "moodle_exception",
"errorcode": "nofile",
"message": "File not specified"
}
Tested with Postman. This might be related: https://tracker.moodle.org/browse/MDL-61276
Doesnt look like there is existing solution for this in moodle web services. Moodle actually encodes files in base64 which creates burden on mobile devices. Mobile devices dont have that much memory to encode big files.
Closet solution published by Moodle HQ (and otherwise) is this : https://github.com/moodlehq/sample-ws-clients/blob/master/PHP-HTTP-filehandling/client.php which saves file as private file and not as assignment. You may have to modify substantially the plugin.
To upload files I'm using this API with a POST method
https://{YOUR_URL}/webservice/upload.php?moodlewsrestformat=json&wstoken={WSTOKEN}
And you must pass the following parameters as FormData
file => File // your file
token => Int // same user's wstoken
filearea => String // draft, private... etc
itemid => Int // set to 0 to create a new file
I'm trying to authenticate a mobile application for the Android platform to a custom node.js server api. I would like to use Google OAuth2 tokens for this rather than roll my own authentication, since Android devices with Google Play installed make this available to app developers. I'm using the GoogleAuthUtil.getToken call from the Google Play Services library, documented here. I'm trying to follow the advice outlinedin this android developers blogpost
The getToken method is returning in my case a long 857 byte string. If I try to pass this token to Google's TokenInfo endpoint, it returns:
{'error': 'invalid_token', 'error_description': 'Invalid Value'}
What am I doing wrong here? In the 'scope' of the getToken call, I am sending:
audience:server:client_id:**i_put_my_clientid_here**. I have a clientid generated for "installed applications". Using this client id, the call to getToken doesn't work at all. When I generated a client id for a "service account", the call succeeds, but I get an 857 byte token that fails when passed to the TokenInfo endpoint as described above.
EDIT:
I also created a client id for "web applications", as it appears that is the right client id to use when calling getToken. But the behavior is the same, I get back an 857 byte token that doesn't validate when calling Google's endpoint.
How can I properly get a valid auth token using Google Play services on Android? Once I have the right token, what is the right node.js library to validate it server side? Can I use passport-google-oauth ?
Hm, this is really a comment rather than an answer, but I can’t put newlines in those:
it has to be the web-side Clent ID that goes in the put_my_clientid_here spot
if GoogleAuthUtil.getToken() gives you a String withou throwing an Exception, it really ought to be valid. When you hit tokeninfo, did you use ...tokeninfo?id_token=<857-byte-value-here>
if you’re a rubyist, grab the google-id-token gem and see if it can validate your 857-byte token.
If you just want to read the contents of the data returned by GoogleAuthUtil.getToken then the process is very simple. The returned data is simply a JWT. So all you'd have to do is split the data by the . character, and then base64 (url) decode each piece.
It gets slightly more complicated if you want you want to verify the message's authenticity. Simply use your favorite crypto library to do the verification. The 3rd component of the JWT is the signature of the data and the Google certs are publicly available; that's all you need to verify the message.
For a week I have been looking into how to validate GoogleAuthUtil tokens received in Android Client application at Node.js server using passport.js
Finally I came across passport-google-token passport strategy which perfectly performs the task.
https://www.npmjs.com/package/passport-google-token
More details are present in the above link.
The official node SDK lets you do that now.
Here's the link: https://github.com/google/google-auth-library-nodejs/blob/master/lib/auth/oauth2client.js#L384
I'm not too familiar with the details of how Android works with respect to handing a token from the device to the server. My general impression, however, is that you don't go through the typical web-based OAuth dance. Instead, you directly call the "user info" endpoint, which will return the info corresponding to the user who holds the token, or reject the request if the token is invalid. There's some discussion on this related question:
validating Android's authToken on third party server
In effect, the token becomes a secret that is shared between both the device and your server, so its important to protect it.
There are a couple strategies for Facebook and Twitter that were developed to do similar things using tokens from iOS devices:
https://github.com/drudge/passport-twitter-token
https://github.com/drudge/passport-facebook-token
You can take some inspiration from them and tweak it to talk to Google's endpoints. Let me know how this turns out. I'd love to see a similar "passport-google-token" strategy, so if you implement one, let me know and I'll link to it!
I just need the correct format of the request - https://www.googleapis.com/customsearch/v1?
key=INSERT-YOUR-KEY&cx=013036536707430787589:_pqjad5hr1a&q=flowers&alt=json.
My app will simply make a request with the search phrase and get a callback in JSON. I already connect Google Custom Search to my account, fill in the payment details and get all the keys.
I use the key for Android apps (with certificates), but get the response "Access Not Configured" after call the request in the browser.
How to create a query string to request the API? How can I get the parameter cx?
This is a bug of Google. The problem was solved only completely removing default project and create a new one.