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2019-03-13

2019-03-13

作者: elephant0001 | 来源:发表于2019-03-13 22:27 被阅读0次

    -(void)scrollViewDidScroll:(UIScrollView*)scrollView

    {

        if(scrollView ==scroll) {

            CGFloatx = scrollView.contentOffset.x;

            self.selectIndex= x /SCREEN_WIDTH;

            [self changeButtonTextColor];

            [self changeLinePlaceWithIndex:self.selectIndex];

            return;

        }

    }

    //改变line位置

    - (void)changeLinePlaceWithIndex:(NSInteger)index

    {

        [UIView animateWithDuration:0.5 animations:^{

            CGRectframe =self->line.frame;

            frame.origin.x=SCREEN_WIDTH/2* index +SCREEN_WIDTH/4-17*SCREENRATE;

            self->line.frame= frame;

        }];

    }

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