cancel
Showing results for 
Search instead for 
Did you mean: 
Reply
Anonymous
Not applicable

Display image from Sharepoint Library. Authentication Problem?

Hello,

 I Have an app that loads Images from Sharepoint Library. Images are in a gallery and It works fine when developping the app.

 

However, when its deployed to new devices, the images doesn't show. The only way to make them show is by opening a new tab and opening the sharepoint site which the document library resides in.  (And this is not a one time process. You have to keep doing it from time to time)

 

This is not practical when deplying the app to a large number of devices. 
 What is causing this issue and how can i Fix it?

 

thanks

2 ACCEPTED SOLUTIONS

Accepted Solutions

Hi @Anonymous 

I can confirm that I have just changed 600 images to URI and they now load from my sharepoint list on all devices (Android / IOS) for all users.

View solution in original post

@JMAFO @Anonymous @Anonymous @Newbie2019 @robinwong 

 

You can view highly compressed and equally high quailty renditions Images or Photos files stored in any Document Library by using the {Thumbnail} property for any given image/photo or file (eg.Word documents,, PowerPoint, HTML files etc) :

 

Assuming you have added a SharePoint Connector to your app associated with Document Library, have added a Gallery control your app associated to that Document Library, you can thereafte simply add an image control to the Gallery and set it's properties as follows:

 

ThisItem.'{Thumbnail}'.Small
ThisItem.'{Thumbnail}'.Medium
ThisItem.'{Thumbnail}'.Large

 

Should you, for example, on selecting a specific row in the gallery whereby a pop-up windows appears containing an larger rendition of that same image/photo in another Image control, all you need to do is set the Image property on that control specifying the following base syntax:

 

Gallery1.Selected.'{Thumbnail}'.Large

 

The URL of the 'returned for sat the '{Thumbnail}'.Large property will look something like as follows:

 

https://...-mediap.svc.ms/transform/thumbnail?provider=spo&inputFormat=jpg&cs=fFNQTw&correlationId=GUID&docid=https%3A%2F%contoso%2Esharepoint%2Ecom%2F%5Fapi%2Fv2%2E0%2Fdrives%2Fb%21LR...Gwl%2Dh...bm%2Fitems%2F01.....HCL%3Ftempauth%3DeyJ…aXw0%26version%3DPublished&width=800&height=800

Note the URL (for a large thumbnail) ends with: &width=800&height=800

 

It is supported, albeit this blog from Chaks (a Senior Program Manager at Microsoft) describes how you can do this with the Graph APIs, this has since been implemented nataively in the SharePoint Connector per my blog post early this year:

https://masteroffice365.com/sharepoint-powered-thumbnails/

 

If you alternatively wish to view an ultra-high quality and equally superbly optimized rendition for any given photo, that by all accounts you'll never even be able to tell the difference between the 0.5Mb - 1Mb maximum size of the rendition compared even a 50Mb file of the original image, you can simply use the substitute function to replace the &width=800&height=800 in the thumbnail URL exposed with whatever values you want. For example:

 

Substitute( Gallery1.Selected.Thumbnail, “&width=800&height=800”, “&width=4096&height=4096” )

The Graph APIs do support specified custom thumbnails size, and as such this really is no different to what you can in case do with the Graph APIs. This technique is simply far easier to implement, and can be entirely dynamically set at runtime as and where you may wish to leverage it. Much like I have done in the lastest blog and corrosponding demo video I've recently published. 

https://youtu.be/vSbwmHfqK3c

https://masteroffice365.com/powerapps

View solution in original post

28 REPLIES 28
v-monli-msft
Community Support
Community Support

Hi @Anonymous,

 

How did you set in PowerApps to make the image show? Did you set below formula in the Image property of the Image control inside the Gallery control?

 

 ‘{Link}’ 

If so, then it is known that this only works in the web version of PowerApps - not on devices. To make it work on devices,  you could try to convert the SharePoint images to its URI (Uniform Resource Identifier) form and bind the image control to that. The URI is basically a long text representation of the image/picture.
Do the following:

  • In SharePoint, create an additional text column in my library and named it 'imageDataUri'
  • In Microsoft Flow, I created a Flow that fires whenever a new SharePoint list item is created, checks to see if the list item is an image (based on the file extension), and if it is, converts its content to its URI format and saves the text in the list items 'imageDataUri' field
  • In PowerApps, instead of binding my image control to the SharePoint image URL, I bound it to the data URI field of the list item instead.

Below is the marked key section of my Flow that does the conversion to the URI format:

flowsp2.png

 

The formula looks as follows:

dataUri(binary(body('Get_file_content')))

The body('Get_file_content') is a reference to the previous step in which you need to fetch the actual content of the file (image in my case) from SharePoint.

 

Regards,

Mona

 

Community Support Team _ Mona Li
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
Anonymous
Not applicable

Thank you for the Reply!

 

 er... I Think i failed to mention something..

Well the Images are in a Document Library. But There is a Sharepoint List that has a column called "ImageURL" which contains the URL's of the images in the document library. 

 Ex:
 /*mysite*/Shared%20Documents/Images/1.jpg
 /*mysite*/Shared%20Documents/Images/2.jpg


So inside powerapps, what im doing is just adding a Media > Image

 and for the IMAGE property, im saying "Thisitem.ImageURL

 

shouldn't this work? 
😕

 

And for your method, wouldn't DataURI's size be large as the image's size? 

And I have alot of images in the Document library. 
 The app is just Retrieving the Image related to a dropdown box selection.
Maybe we can use Flow to retrieve the image from the document library using ur method?

 

Thank you again..!

Anonymous
Not applicable

No Solutions?

Anonymous
Not applicable

Hey Aragorn- did you ever find a solution to this? I am having the same troubles as you did with my app.

Hi @Anonymous 

I can confirm that I have just changed 600 images to URI and they now load from my sharepoint list on all devices (Android / IOS) for all users.

Using the flow to convert the image to URI is extremely slow and causes the image library to no longer open up.. is this expected behavior?

Hi @JMAFO , I had issues with using flow and an image library so placed them all in a standard sharepoint list. The column type is multiple line of text.

 

I used an online convertor as flow was to slow.

 

Cheers

@Newbie2019 thanks for the reply! So to get this clear, you used a standard SharePoint list with the multi line column that stored the data uri and then connected to that list via PowerApps data connection? Did you include the images as attachments on the list?

@JMAFO Yeah, use a standard SharePoint list with a multiline column. I simply click to add a new entry and paste the into that column. For example I called my multi column imageDataURI as below:

URI.JPG

 

I then display the mage in powerapps gallery by doing a lookup based on a name which is displayed against the URI in the title column.

 

Let me know if this works.

 

Cheers

Helpful resources

Announcements

Community will be READ ONLY July 16th, 5p PDT -July 22nd

Dear Community Members,   We'd like to let you know of an upcoming change to the community platform: starting July 16th, the platform will transition to a READ ONLY mode until July 22nd.   During this period, members will not be able to Kudo, Comment, or Reply to any posts.   On July 22nd, please be on the lookout for a message sent to the email address registered on your community profile. This email is crucial as it will contain your unique code and link to register for the new platform encompassing all of the communities.   What to Expect in the New Community: A more unified experience where all products, including Power Apps, Power Automate, Copilot Studio, and Power Pages, will be accessible from one community.Community Blogs that you can syndicate and link to for automatic updates. We appreciate your understanding and cooperation during this transition. Stay tuned for the exciting new features and a seamless community experience ahead!

Summer of Solutions | Week 4 Results | Winners will be posted on July 24th

We are excited to announce the Summer of Solutions Challenge!   This challenge is kicking off on Monday, June 17th and will run for (4) weeks.  The challenge is open to all Power Platform (Power Apps, Power Automate, Copilot Studio & Power Pages) community members. We invite you to participate in a quest to provide solutions in the Forums to as many questions as you can. Answers can be provided in all the communities.    Entry Period: This Challenge will consist of four weekly Entry Periods as follows (each an “Entry Period”)   - 12:00 a.m. PT on June 17, 2024 – 11:59 p.m. PT on June 23, 2024 - 12:00 a.m. PT on June 24, 2024 – 11:59 p.m. PT on June 30, 2024 - 12:00 a.m. PT on July 1, 2024 – 11:59 p.m. PT on July 7, 2024 - 12:00 a.m. PT on July 8, 2024 – 11:59 p.m. PT on July 14, 2024   Entries will be eligible for the Entry Period in which they are received and will not carryover to subsequent weekly entry periods.  You must enter into each weekly Entry Period separately.   How to Enter: We invite you to participate in a quest to provide "Accepted Solutions" to as many questions as you can. Answers can be provided in all the communities. Users must provide a solution which can be an “Accepted Solution” in the Forums in all of the communities and there are no limits to the number of “Accepted Solutions” that a member can provide for entries in this challenge, but each entry must be substantially unique and different.    Winner Selection and Prizes: At the end of each week, we will list the top ten (10) Community users which will consist of: 5 Community Members & 5 Super Users and they will advance to the final drawing. We will post each week in the News & Announcements the top 10 Solution providers.  At the end of the challenge, we will add all of the top 10 weekly names and enter them into a random drawing.  Then we will randomly select ten (10) winners (5 Community Members & 5 Super Users) from among all eligible entrants received across all weekly Entry Periods to receive the prize listed below. If a winner declines, we will draw again at random for the next winner.  A user will only be able to win once overall. If they are drawn multiple times, another user will be drawn at random.  Individuals will be contacted before the announcement with the opportunity to claim or deny the prize.  Once all of the winners have been notified, we will post in the News & Announcements of each community with the list of winners.   Each winner will receive one (1) Pass to the Power Platform Conference in Las Vegas, Sep. 18-20, 2024 ($1800 value). NOTE: Prize is for conference attendance only and any other costs such as airfare, lodging, transportation, and food are the sole responsibility of the winner. Tickets are not transferable to any other party or to next year’s event.   ** PLEASE SEE THE ATTACHED RULES for this CHALLENGE**   Week 1 Results: Congratulations to the Week 1 qualifiers, you are being entered in the random drawing that will take place at the end of the challenge. Community MembersNumber of SolutionsSuper UsersNumber of Solutions @anandm08  23 @WarrenBelz  31 @DBO_DV  10 @Amik  19 AmínAA 6 @mmbr1606  12 @rzuber  4 @happyume  7 @Giraldoj  3@ANB 6 (tie)   @SpongYe  6 (tie)     Week 2 Results: Congratulations to the Week 2 qualifiers, you are being entered in the random drawing that will take place at the end of the challenge. Community MembersSolutionsSuper UsersSolutions @anandm08  10@WarrenBelz 25 @DBO_DV  6@mmbr1606 14 @AmínAA 4 @Amik  12 @royg  3 @ANB  10 @AllanDeCastro  2 @SunilPashikanti  5 @Michaelfp  2 @FLMike  5 @eduardo_izzo  2   Meekou 2   @rzuber  2   @Velegandla  2     @PowerPlatform-P  2   @Micaiah  2     Week 3 Results: Congratulations to the Week 3 qualifiers, you are being entered in the random drawing that will take place at the end of the challenge.   Week 3:Community MembersSolutionsSuper UsersSolutionsPower Apps anandm0861WarrenBelz86DBO_DV25Amik66Michaelfp13mmbr160647Giraldoj13FLMike31AmínAA13SpongYe27     Week 4 Results: Congratulations to the Week 4 qualifiers, you are being entered in the random drawing that will take place at the end of the challenge.   Week 4:Community MembersSolutionsSuper UsersSolutionsPower Apps DBO-DV21WarranBelz26Giraldoj7mmbr160618Muzammmil_0695067Amik14samfawzi_acml6FLMike12tzuber6ANB8   SunilPashikanti8

Check Out | 2024 Release Wave 2 Plans for Microsoft Dynamics 365 and Microsoft Power Platform

On July 16, 2024, we published the 2024 release wave 2 plans for Microsoft Dynamics 365 and Microsoft Power Platform. These plans are a compilation of the new capabilities planned to be released between October 2024 to March 2025. This release introduces a wealth of new features designed to enhance customer understanding and improve overall user experience, showcasing our dedication to driving digital transformation for our customers and partners.    The upcoming wave is centered around utilizing advanced AI and Microsoft Copilot technologies to enhance user productivity and streamline operations across diverse business applications. These enhancements include intelligent automation, AI-powered insights, and immersive user experiences that are designed to break down barriers between data, insights, and individuals. Watch a summary of the release highlights.    Discover the latest features that empower organizations to operate more efficiently and adaptively. From AI-driven sales insights and customer service enhancements to predictive analytics in supply chain management and autonomous financial processes, the new capabilities enable businesses to proactively address challenges and capitalize on opportunities.    

Updates to Transitions in the Power Platform Communities

We're embarking on a journey to enhance your experience by transitioning to a new community platform. Our team has been diligently working to create a fresh community site, leveraging the very Dynamics 365 and Power Platform tools our community advocates for.  We started this journey with transitioning Copilot Studio forums and blogs in June. The move marks the beginning of a new chapter, and we're eager for you to be a part of it. The rest of the Power Platform product sites will be moving over this summer.   Stay tuned for more updates as we get closer to the launch. We can't wait to welcome you to our new community space, designed with you in mind. Let's connect, learn, and grow together.   Here's to new beginnings and endless possibilities!   If you have any questions, observations or concerns throughout this process please go to https://aka.ms/PPCommSupport.   To stay up to date on the latest details of this migration and other important Community updates subscribe to our News and Announcements forums: Copilot Studio, Power Apps, Power Automate, Power Pages

Top Solution Authors
Top Kudoed Authors
Users online (2,511)