I have an android application contains four modules. Each module has it's own apk . But the problem is, three apk's read some data from apk1.I mean there is dependency between four apk's. How to identify every time when the apk1 is available or not programmatically. Because user can have the permission to un-install the apk at any point of time. so how to find whether the apk1 is available or not from the remaining three apk's.
Please suggest me.
Waiting for your response.