I have an app which takes pictures and saves them to sd, problem is that picture modification (delete,rename,ecc.) should be done just throught the app so I need a way to make the pictures folder not accessible to user…is it possible?
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I have an app which takes pictures and saves them to sd, problem is that picture modification (delete,rename,ecc.) should be done just throught the app so I need a way to make the pictures folder not accessible to user…is it possible?
In the common Android architecture the SD-Card is formatted using FAT32 filesystem. As FAT32 does not support any access control mechanisms you can not rely on that.
Therefore the only possibility is encryption. Create an encryption key and store in the private app data folder. Then use it for encrypting the privacy sensitive files you want to store on the SD-card.