Doing work on demand in a ViewFlipper

I want to load a URL when a certain view in my ViewFlipper is shown. How can I determine that X view is being shown, so I can perform the URL download开发者_JAVA百科ing logic?

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How can I determine that X view is being shown

Use the getDisplayedChild() method; it returns an integer which represents the base-zero index of the displayed view. What to do with that index is up to you.