How to check if two paths are in the same mount point?

Question

I need to transfer a file from one directory to another in the Android file system. How can I programmatically check if these two paths are on the same mount point?

The reason I want to know this is because if they are, we need to copy the bits instead of File.rename (newPath) .

Examples when the paths are at different mount points:

• The user wants to move the file from internal external storage.

• The user wants to move the file from / sdcard / files to / sdcard / external_sd / files on samsungdevice.

Answer 1

, Android:

• , File.getCanonicalPath() .

• /proc/mounts

• , , , / .

.

Answer 2

File.rename. , .