[android-developers] Rapidly load data on Re-launch of an Activity

Hello all,

Actually, i am fetching XML from the web, parsing it and display it on
the screen. The problem which i am getting is that the activity tries
to load the data from web each time the activity is called.(Actually,
my mobile app requires frequent trips to the server) So i am in search
of the below solution:

On Re-launch of an activity, the data from web should not be loaded
again. (But it should load data from the cache or local database that
we have created while calling the web-xml for the first time).
creating a class that i can use to transparently make application
faster by
selectively caching items in memory. And thus, making users very
happy and
This class can even apply individual refresh times to each cached
item.

So, i think i need to store the data in Cache , or in local database
or something like that.

Is there any way/technique to implement such thing ? so that it need
not to load from web every-time on Re-launch of an activity.

[Note: I want to do to make client happy by decreasing the loading
time and running the application efficiently and optimizing
application's loading time]

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