On Wed, Oct 20, 2010 at 9:14 AM, chazz <[email protected]> wrote:
> Hi, I am new in android development. i was wondering if i could share
> some data between two applications in android. One way is to place the
> text file on SdCard but i dont want to do this... second way is to
> place in data folder, and i dont know how to.... 3rd way is to place
> the data in shared memory so both applications can see it... also i
> dont want the user to see or delete this file, only my two
> applications can change this file or data.....
> Please help me... i've been wondering on this for 2 days....

First, users who root their devices can "see or delete" any files.

Second, there is no shared memory construct available in the Android
SDK that I can think of.

If these two apps are both written by you, you can use
android:sharedUserId in the manifest and sign them with the same
signing key. Then they will have read/write access to each other's
app-local file store (the /data/data/your.package.name/files spot).

-- 
Mark Murphy (a Commons Guy)
http://commonsware.com | http://github.com/commonsguy
http://commonsware.com/blog | http://twitter.com/commonsguy

Android App Developer Books: http://commonsware.com/books

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