@TIMAI2 In the following JS, can I use image picker and then pass the reference to the html file using webviewstring?
<script>
// set webviewstring in AppInventor to "<imagefilename>,altText"
// no commas in the altText !
var img = window.AppInventor.getWebViewString();
document.getElementById("myImage").src = img.split(",")[0];
document.getElementById("myImage").alt = img.split(",")[1];
</script>
Ah got it! Thanks! So image picker returns a reference, and not a binary file.
returns a relative link to the file, you need to make an absolute uri for the html to work
And why is the html < input... not working in the app?
Does that require any added persmissions to run?
It would really help if you provided a screenshot of your relevant blocks as well as the complete html, so we can see what you are trying to do, and where the problem may be.
Taifun
Trying to push the limits! Snippets, Tutorials and Extensions from Pura Vida Apps by 
Taifun.
The webviewer has no access to the android filesystem.
I have problem too
I code it to show image into wedview.
But can't show.
I try with image component, it works.
Please, can you teach me : i wrong?
the file omponent can read only text files, but not images...
so why are you using the file component to read an image?
actually @TIMAI2 already answered your question...
generally use Do it to debug your blocks, see also tip 4 here App Inventor: How to Learn | Pura Vida Apps
see also Live Development, Testing, and Debugging Tools
Taifun
Trying to push the limits! Snippets, Tutorials and Extensions from Pura Vida Apps by 
Taifun.
@ Taifun, i try building zoom chat like this.
i have list history chat , and all imgae saved at google drive.
Now, i show all by html in wedview.
it words.
but after i send a new messenger, or have new mesenger from my friends in groups.
it need reload all ( Text, and image) from google drive..
Now i want save all data to phone, after i sent new mesenger or have new mesenger. i only load it.
Can you teach me : another way to solve it ?
Many thanks 
Does by using "text-join" component to "file//imagepicker1selection" give absolute path for html in webviewer?
Second question, what about absolute paths for document files and downloads on the device?
Thank you very much for taking the time to answer my question.
Use Do it to find it out yourself. .
use Do it to debug your blocks, see also tip 4 here App Inventor: How to Learn | Pura Vida Apps
see also Live Development, Testing, and Debugging Tools
Taifun
Trying to push the limits! Snippets, Tutorials and Extensions from Pura Vida Apps by Taifun.
Thanks Taifun, please enlighten me for my second question (what about absolute paths for document files and downloads on the device?)
Thank you very much for taking the time to answer my question.
Please provide a screenshot of some relevant blocks to understand, what exactly you are talking about..
Taifun
I imagined that I could find and access files in the downloads or document folder, but in reality it only entered a list of files that I didn't recognize from the device (no document or download files)
What you can access and how to access it depends on the file type and if the app is owner of the file or not
Taifun
If what I expect is to access a list of file names with the extension .docx .doc .pdf in the document or download folder from the device and not the file belonging to the application, what is the right solution?
Thank you before
Use the SAF extension to read files you do not own
Taifun
Thanks a lot Taifun, I seem to have found an overview of the solution from this link of yours. Some basics on Android storage system
