Writing to SD card on Android
I am writing a simple Android app to compress my photos to save space. I’ve found that by re-saving the JPEG with a quality of around 87 there’s, on average, a 50% saving in file size. Most importantly, I have yet to be able to tell the difference between the original and compressed photos.
I used to do this on the computer when performing backups using
but then I had to transfer the smaller photos back to the devices and it
was all a bit messy because I couldn’t find an easy way to script getting
access to the internal and SD card via USB on Windows.
The main solution comes from this Stack Overflow post: https://stackoverflow.com/a/25612858/3786869
I tried many searches to get to an answer:
- Android Oreo access SD card path
- find location of removable SD card
- how to read JPG photos on the DCIM Camera folder on SD card Samsung note 8
- permission denied when writing files to SD card
However there was not a clear solution.
I’ve yet to implement it, but I will update this post (or write a new one) when I have with a nice clean solution and some example code!