title: Save data on SDCard in a secure way in Android
body: <p>I want to save some files on SDCard which will be downloaded from net. The user should not be able to have direct access to it. I mean the file should be secure and it should not be transferred to other device and if its transferred then it should not be in readable format. Is there a particular directory on SDCard where these files can be saved and be secure too? Also this files should be automatically deleted on uninstall of the app. I guess there is a direct way of that in Android 2.2 but not below that. So, if someone has any idea of doing that then please let me know.</p>