Can SharedPreferences be shared among different Android applications?

Question

As I checked in APIs description for getSharedPreferences(String, int),Second attribute is defining accessibility mode and can take 0 or MODE_PRIVATE for the default operati

Answer 1

My book reference is based upon that comment.

Moreover, making any file MODE_WORLD_READABLE or (worse) MODE_WORLD_WRITEABLE is a bad idea. You lose any hope of security.

If you wish to share data between two applications, there are a myriad of solutions, such as:

• service with an API exposed by AIDL
• service with an API exposed via commands sent via startService() and responses sent via a Messenger or createPendingResult() PendingIntent or something
• content provider
• broadcast Intents

All of those allow you to define permissions for integration and let you control the granularity of access.