ios - Opening and closing form animation -


is animation possible in ios, third party api's that?

enter image description here

figured out myself nested animations

-(void)viewdidload {      expandiview = [[uiview alloc] initwithframe:cgrectmake(137, 269, 30, 2                                                             )];     expandiview.backgroundcolor = [uicolor redcolor];     [self.view addsubview:expandiview];     expandiview.hidden=yes;  }  -(ibaction)expand:(id)sender {      expandiview.hidden=no;       [uiview animatewithduration:0.5f                      animations:^{                           expandiview.frame = cgrectmake(60, 269, 200, 2);                      }                      completion:^(bool finished) {                          [uiview animatewithduration:1                                           animations:^{                                               expandiview.frame = cgrectmake(60, 269, 200, 100);                                            }];                      }];  }      -(ibaction)collapse:(id)sender {        [uiview animatewithduration:0.5f                      animations:^{                          expandiview.frame = cgrectmake(60, 269, 200, 2);                       }                      completion:^(bool finished) {           [uiview animatewithduration:0.5f animations:^{                              expandiview.frame = cgrectmake(137, 269, 30, 2);                          } completion:^(bool finished) {                              expandiview.hidden=yes;                          }];                      }];   }

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