Base64 extension help

MIT App Inventor Help
25

you will need to convert to base64 if saving an image to google drive....

function doPost(e) {

    var data = Utilities.base64Decode(e.parameters.data);
    var blob = Utilities.newBlob(data, e.parameters.mimetype, e.parameters.filename);
    DriveApp.getFolderById('<YOUR FOLDER ID HERE>').createFile(blob);
    return ContentService.createTextOutput("Your File Successfully Uploaded");

    }

You could try my rework of the procam extension, which saves to base64