iphone - How to make an image scroll forever -

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i trying make image scroll end of screen automatically , jump beginning of image , scroll again in continuous loop. don't want user know end of image released? know how make that? image must scroll itself, not because user touched it, that's why can't use wwdc video. help!

you scroll 2 uiimageviews adding to/subtracting x values. when 1 scrolls off screen, set x value behind second one, , continue scrolling.

ex: ([ ] screen)

<------------------------------------  |   [ ]   |     b    | |     a[   ]|     b    | |       [ | ]   b    |             [   ] b    |         |

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