Apologies, I'll answer all the questions: the link to the topic where I mention your solution is the same one Peter pointed out above — I'm sharing it again.
I'll explain more clearly what the app needs to do: the user creates a project with a name X, takes a series of photos, and optionally adds lines of text as captions for each photo. Then everything is saved into a document, which can be in .docx, .pptx, or .html format — I don't care about the exact format, the IMPORTANT thing is that it must be EDITABLE later (so not a PDF).
At this point, the document is saved in the internal storage in a specific folder. Later on, the user can connect the device to a computer and download the folder, which will contain all the original photos and also the document. The document will include: TITLE, photo1 (caption), photo2 (caption), photoN (caption)...
If the document is already perfect as it is, the user can export/print it as a PDF; otherwise, they can still make changes (delete a photo or modify a caption).
I know that this type of file can end up being as large as 120 MB, but it doesn't matter, because the user will remove the entire folder from the device.
The folder that will be moved from the device to the computer should look approximately like this:
And the file (.docx, or ,pptx or .html) like this:
You might say: wouldn't it be easier to create the document with all the images and captions once you're already at the computer?
Actually, yes — but my job involves performing structural analyses on bridges and buildings. In a single workday, I visit more than 15 structures, and for each one I have to take many photos and create a photographic report with a short description for each image.
So, if when I return at the end of the day I already have 15 folders on my smartphone — one for each structure — with all the photos and a "rough" but pre-formatted photographic document, it makes my work a whole lot easier.
This app is almost complete — I’ve managed to include nearly everything I described above (taking photos, naming them as I want, saving them in a specific directory based on the project name, writing a line of text ABOVE the image).
The only thing I’m still missing is inserting the photos into a document that can be edited later and saving it locally.