I have a web app where user can upload a picture of his logo
using dropbox api im able to save the file to a dropbox folder which is great
however i want to get the download link so using my angular client ill be able to set the img src tag and show the image
I've been using this implementation:
String url = client.sharing().createSharedLinkWithSettings("/" + clientId + "/logo." + fileName[1]).getUrl();
however as the name implies im getting a share link which is basically a web page with the image
i only need the image
is it possible?
Yes, use DbxUserFilesRequests.getTemporaryLink instead. That will give you a temporary link that points directly to the file data.
the answer #Greg gave is correct but i needed a permanent link i was able to use the answer from here
Dropbox API - Get permanent link for my media?
and here is my implementation
String[] fileName = file.getOriginalFilename().split("\\.");
InputStream in = file.getInputStream();
client.files().uploadBuilder("/" + clientId + "/logo." + fileName[1]).withMode(WriteMode.OVERWRITE).uploadAndFinish(in);
log.debug("Successfully uploaded image to drop box account");
SharedLinkMetadata meta = client.sharing().createSharedLinkWithSettings("/" + clientId + "/logo." + fileName[1]);
String url = meta.getUrl();
// now we need to strip any other url params and append raw=1;
url = url.split("\\?")[0];
url = url + "\\?raw=1";
This worked for me and was much easier than the solutions above, per this article:
To get a direct download link, replace the www.dropbox.com with dl.dropboxusercontent.com
EDIT: I've also discovered that you can add the query parameter ?dl=1 (dl meaning download and 1 meaning "enabled") to a shared link and that will make it a direct-download link as well. This is likely more reliable (long-term) than the method above.
Related
I am planning to create an online game that uses some kind of lobby system. I want the host to be able to create an invite link http://randomgame.io/join?code=1234abcd.
How do I get the code parameter of the URL so that I can show content based on this code?
Any help is much appreciated :D
Edit:
I can get the URL by using Uri.base but the problem now is that I can't enter any query parameters into the url because they get instantly removed.
With this package you can get current link from users browser, using function getHref(). So the final code could look like this:
import 'package:window_location_href/window_location_href.dart';
final String url = getHref();
Uri uri = new Uri.dataFromString(url);
String codeParam = uri.queryParameters['code'];
Problem:
I need to be able to remove all link decoration from the download URL that is generated for images in Firebase Storage.
However, when all link decoration is stripped away, the resulting link currently would return a JSON document of the image's metadata.
Context:
The flow goes as follows:
An image is uploaded to Firebase from an iOS app. Once that is done the download URL is then sent in a POST request to an external server.
The server that the URL is being sent to doesn't accept link decoration when submitting image URLs.
Goal:
Alter the Firebase Storage download URL such as it is stripped of all link decoration like so:
https://firebasestorage.googleapis.com/v0/b/example.appspot.com/o/[FOLDER_NAME]%[IMAGE_NAME].jpg
Notes:
The problem is twofold really, first the link needs to be manipulated to remove all the link decoration. Then the behavior of the link needs to changed, since in order to return an image, you need ?alt=media following the file extension, in this case .jpg. Currently, without link decoration, using the link with my desired structure would return a JSON document of the metadata.
The current link structure is as follows:
https://firebasestorage.googleapis.com/v0/b/example.appspot.com/o/[FOLDER_NAME]%[IMAGE_NAME].jpg?alt=media&token=[TOKEN]
Desired link structure:
https://firebasestorage.googleapis.com/v0/b/example.appspot.com/o/[FOLDER_NAME]%[IMAGE_NAME].jpg
The token is necessary for accessing the image depending security rules in place, but can be ignored with the proper read permissions. I can adjust the rules as needed, but I still need to be able to remove the ?alt=media and still return an image.
Building up on Frank's answer, if you access to your associated Google Cloud Platform project, find the bucket in the Storage tab and make this bucket public, you will be able to get the image from here with the format you wish. That is, you will not be accessing through Firebase
https://firebasestorage.googleapis.com/v0/b/example.appspot.com/o/[FOLDER_NAME]%[IMAGE_NAME].jpg
but through Google Cloud Storage, with a link like
https://storage.googleapis.com/[bucket_name]/[path_to_image]
Once in your GCP project Console, access the Storage bucket with the same name as the one you have in your Firebase project. They are the same bucket. Then make the bucket public by following these steps. After that, you will be able to construct your links as mentioned above and they will be accessible with no token and no alt=media param. If you do not want to make the public to everyone, you will be able to play around with the permissions there as you wish.
You could split the url string into two halves by using String.componentsSeparatedByString(_ separator:)
Storage.storage().reference().child(filePath).downloadURL(completion: { (url, error) in
let urlString = url.absoluteString
let urlStringWithoutQueryString = urlString.componentsSeparatedByString("?").first!
})
Calling .downloadURL on a StorageReference will return you that URL, but this method can be used to remove the query string from any URL. String.componentsSeparatedByString(_ separator:) breaks a String into an array of Strings, splitting the string by any occurrence of a given separator, in this case ?.
NOTE this method assumes that ? occurs only once within the url string, which I believe is the case for all Firebase Storage urls.
You should treat the download URL that you get back from Firebase as an opaque string. There's no way to strip the parameters from a download URL without breaking that download URL.
If you want to allow public access to the files in your bucket with simpler URLs, consider making the object in your (or even your entire) bucket public.
i would like to ask, if there's any way to retrieve files links of folder which is publicly shared. Like someone create random public folder(everyone can view it) and put some random files into it. So i need to get all files links from that folder. All i know is link to that folder in format: https://www.dropbox.com/sh/[code]/[code].
Can i do that by using dropbox api, or the only option is to scrape dropbox page directly?
Here is a copy paste example:
using Dropbox.Api;
using Dropbox.Api.Files;
...
// AccessToken - get it from app console
// FolderToDownload - https://www.dropbox.com/sh/{unicorn_string}?dl=0
using (var dbx = new DropboxClient(_dropboxSettings.AccessToken))
{
var sharedLink = new SharedLink(_dropboxSettings.FolderToDownload);
var sharedFiles = await dbx.Files.ListFolderAsync(path: "", sharedLink: sharedLink);
foreach (var file in sharedFiles.Entries)
{
}
}
The documentation wasn't clear about setting path to an empty string when using it with publicly shared folders.
The official way to get information about a particular shared link is to use the Dropbox API's /2/sharing/get_shared_link_metadata endpoint:
https://www.dropbox.com/developers/documentation/http/documentation#sharing-get_shared_link_metadata
In the official Dropbox .NET SDK that's the GetSharedLinkMetadataAsync method:
https://dropbox.github.io/dropbox-sdk-dotnet/html/M_Dropbox_Api_Sharing_Routes_SharingUserRoutes_GetSharedLinkMetadataAsync_1.htm
This unfortunately doesn't offer the list of files though. We'll consider that a feature request.
Note that scraping the site would be error prone and likely to break without warning. (It's also against the terms anyway.)
Edit:
Dropbox API v2 now supports listing the contents of a shared link for a folder. This can be accomplished using the same interface as listing a folder in a connected user's account, via the list_folder functionality. To list the contents of a shared link for a folder, you instead provide the shared link URL in the shared_link parameter to /2/files/list_folder:
https://www.dropbox.com/developers/documentation/http/documentation#files-list_folder
If you're using an official SDK, there will also be a corresponding method for this endpoint. In the .NET SDK that's available as ListFolderAsync:
https://dropbox.github.io/dropbox-sdk-dotnet/html/M_Dropbox_Api_Files_Routes_FilesUserRoutes_ListFolderAsync_1.htm
I have a JSON which returns a list of URLs of images to access the JSON that is already placed in a field in this domain whitelist manifest.json, however when I try to view the pictures it complains that it can not access the images.
1 - How to Perm can display images that are not within the package App
2 - How can I download the images to download the APP and then display
to this second question I used the RAL, a lib trial google and it worked, however I could not make a test using this publication lib he claims an error, follow the link to the image lib and complaining about the error:
lib: https://github.com/GoogleChrome/apps-resource-loader
Error: http://twitter.yfrog.com/oe24998653p
You can request external images using XMLHttpRequest and transform them into ObjectURLs. Then set the src attribute in the <img> tag to each ObjectURL and it should work.
Since this is a very common use case, we created a library to simplify it. Just drop the apps-resource-loader ral.min.js to your project and then:
var remoteImage,
container = document.querySelector('.imageContainer'),
toLoad = { 'images': [
'http://myserver.com/image1.png',
'http://myserver.com/image2.png' ] }; // list of image URLs
toLoad.images.forEach(function(imageToLoad) {
remoteImage = new RAL.RemoteImage(imageToLoad);
container.appendChild(remoteImage.element);
RAL.Queue.add(remoteImage);
});
RAL.Queue.setMaxConnections(4);
RAL.Queue.start();
Remember that you need permission in the manifest.json to all domains you will be XHR'ing to. If you don't know beforehand where those images will be hosted, you can ask permission for any url:
permissions: ['<all_urls>'],
For other usages and to get the full library, please see the project page:
https://github.com/GoogleChrome/apps-resource-loader
and a simple demo at:
https://github.com/GoogleChrome/apps-resource-loader/tree/master/demo
Google has added a browser tag that allows you to include images, but so far I haven't been able to get it to work.
Here is what they show as an example
<browser src="http://i.stack.imgur.com/dmHl0.png">
By mistake I have uploaded the application on the App Store without changing the URL for Facebook.
This is the url which is being shared : goo.gl/7wK2
and it redirects to: https://itunes.apple.com/us/app/tap-tap-balloon!/id535053777?mt=8
Can we do something so that the same URL (goo.gl/7wK2) will redirect to: https://itunes.apple.com/us/app/find-a-thing/id638627376?mt=8?
Is this possible via the Google URL shortener API or by any other method?
I think you can not.
You have to create another short url and then republish your application
I think you can not, because the url is derived from what we send to goo * le server.
If you want to change, you must send or submit your new url to goo * le.
You can surely do it using tiny.cc. I have used it and was working fine easily.