Examples of Contex in Android (use context to open an activity in a common class)

Premise: A inherits activity,b a common class, and the constructor is like this

Private Context CTX;

Public Purchase (Context c) {

TODO auto-generated Constructor stub
This.ctx = C;

}

C A class that inherits activity.

Now in A, b b= new B (A.this), then B gets a context object. The constructor for B is as follows:

Public Purchase (Context c) {

TODO auto-generated Constructor stub
This.ctx = C;

Intent Intent = new intent ();
Intent.setclass (CTX, C. Class);
Ctx.startactivity (Intent);

}

This allows you to display the C page. And can be in the Class B, to get some resources, such as ctx.getassets (). Open ("Xxx.xml"); Gets an XML file in the project.

Examples of Contex in Android (use context to open an activity in a common class)