ios - UIView animations are not working -


i'm using animations change frame of view fadein , fadeout.but not working. os:ios7

[uiview animatewithduration:0.8 animations:^{       [objarticletable setframe:cgrectmake(cgrectgetminx([objarticletable frame]), cgrectgetminy([objarticletable frame]), cgrectgetwidth([objarticletable frame]), 0)];}];

try this:

 objarticletable.alpha = 0.0f; objarticletable.hidden = no; [uiview animatewithduration:0.5f      animations:^{          objarticletable.alpha = 1.0;      } completion:^(bool finished) {           //done      }];

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