The only real way to prove this is to offer you a working demo, so here we go:
BLOCKS - uses the very latest version of KIO4_Base641 extension, this allows for working with any Android version both before and after 10 (for now...). Just a single image in the assets to test with.
SCREEN - shows response after submission
SCRIPT - no need for the doGet(e) as we are using POST. I used the filename, as opposed to the name, to send to the sheet, and removed any spaces / difficult characters from the filename.
function doPost(e) {
var ss = SpreadsheetApp.openById('1OwQb6sxYa-eyHWje_fVTnBjDqFapN7KxRcMwkZnnsdM');
var sh = ss.getSheetByName('Test_Sheet');
var tag1 = e.parameter.tag1;
var tag2 = e.parameter.tag2;
var name = e.parameter.name;
var mimetype = e.parameter.mimetype;
var data = e.parameter.data;
var filename = name + "_" + Utilities.formatDate(new Date(), "GMT+4", "dd-MM-yyyy-HH-mm");
var data = Utilities.base64Decode(data);
var blob = Utilities.newBlob(data, mimetype, filename);
var fileID = DriveApp.getFolderById('1WeowpWfFpY7Auw40uwZEx5U1z4s8vvJ9').createFile(blob).getId();
var file = DriveApp.getFileById(fileID);
file.setSharing(DriveApp.Access.ANYONE_WITH_LINK, DriveApp.Permission.VIEW);
var fileUrl = "https://drive.google.com/uc?export=view&id=" + fileID;
sh.appendRow([tag1,tag2,filename,fileUrl])
return ContentService.createTextOutput("Data uploaded");
}
SHEET - you can see three entries from three image submissions
FOLDER - the "people" icon shows on the the three uploaded files, which indicates sharing. Note that the google sheet is NOT shared.
AIA
DemoFileURLAndData.aia (50.6 KB)