Hi Vicky,

The i.e. teh Settings App uses an AIDL Interface ( IMountService )
to mount/unmount the sdcard finally via vold.

But I think only as part of the system build and signed with the
platform
key your are able to use it. But you can check this for your own.

Good luck ! Frank



On 23 Mai, 07:57, Vicky Wang <[email protected]> wrote:
> Hi, guys
> There is a question about how to unmount SD card with java code on android.
> Right now, i found if want to unmount SD card with java, it need super
> permission. But i don't know the details how to do it.
> Who can help me ? Thanks a lot.

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