Android ActionBar with fragments reload each time

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http://stackoverflow.com – I have a main activity with a actionbar, tabs and some fragments. Each time i switch a tab the full fragment is recreated. On some of the fragments i have a listview with content loaded from a webservice, i don't want this to be recalled from the webservice... The listview is a by click listview, so you can navigate through it. Are fragments the best choice or do i need something else to keep the content stay alive. For example the tabbar from iOS, there every viewcontroller stays alive. Thanks for any help! (HowTos)