When I run my application I am going From Class A------->Class B, Class B-->Class C, Class C--->Class D.
I need to use Class A Bundle values in Class D. So what should I do to get the value & can you send some sample code?
Android Developers.
Instead of passing the data and variables from application to application you should consider using an Application object. See this question and answer How to declare global variables in Android?
You should create a Java ( parcelable ) class P which contain all fields you want to use in Class D.
There are two ways
1. Save the object( of P ) in file and later read saved file in class D.
2. or Pass the object form one Activity to other Activity ( assuming A,B,C,D are Activity ).