android how to work with progressdialog

I have an 开发者_开发知识库application in that i have an activity where it fetches data from server. and showed in an activity. I did that.' but i want that progressdialog should be there if any problem with internet connection came then it should show the the problem with internet.

means i have to give time for progressbar if it crosses the 10sec then that warning alert should come to tell "problem with internet" What i write to show the progres dialog and how to give time limit for that. please give me the answer. thank you

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http://www.androidpeople.com/android-progress-dialog-example

http://androidcore.com/android-programming-tutorials/622-simple-progress-bar-dialog-in-android-with-thread.html

http://androidcore.com/android-programming-tutorials/471-progressbar-updating-using-message-handler.html

http://androidcore.com/android-programming-tutorials/459-progressbar.html

http://androidcore.com/android-programming-tutorials/96-display-progress-bar-after-a-dialog-in-android.html

Read the tutorial related to progress bar using the given above link. I hope it is useful to you.