I made a new version (1.12) available on play store
https://play.google.com/store/apps/details?id=net.kir.baduk_ai and github
https://github.com/aki65/aki65.github.io/releases/tag/v1.12.0 with the following changes:
1) BadukAI is now built with android SDK 30 (necessary for google to accept the update in play store). This implies, that on recent android versions BadukAI doesn't get global storage access anymore. Therefore external files (sgf's or network files) now have to be chosen with the system's native file picker app. So don't be surprised if you seemingly leave BadukAI when you are asked to select a file. Just choose the file in the native system app, and you will automatically get back to BadukAI.
In particular, all this means, that loading an external optimized network (which consists of two files) now requires you to select both files, one after the other.
2) After tapping "Load sgf" you can now not only load sgf's but also images. BadukAI will then detect the go board and stones in the image and load the resulting position. You can also produce that image "on the fly" with the camera (for best results use 4:3 portrait mode). This comes in very handy if you want to analyze a position you encounter in a book or a video or on a real board. Depending on lighting conditions etc., the detection is not always perfect, but usually very good.
3) You can also load a picture into BadukAI by sharing it to BadukAI from within another app. In that way you can quickly load a screenshot.
4) When no moves have been played yet, you can now edit the board: After tapping "add B stone" you can put any number of black stones on the board (in the same way as you would play them). Same goes for white stones. After tapping "remove stone" you can place a cross on the board (in the same way as a stone). By placing it on an existing stone, you can remove that stone.
By tapping the marked editing button again (whichever it is), you can stop its editing function. In that state, touching the board will play a stone as usual.
5) BadukAI has been upgraded to KataGo 1.10.
6) Captures are now displayed below the histogram.
These were a lot of changes, therefore some bugs may have crept in. So please report if anything goes wrong, so that I can try to fix it.