UIScrollview限制滑动区域 [英] UIScrollview limit swipe area

问题描述

我正在尝试限制UIScrollview的滑动区域，但我无法做到这一点。

I am trying to limit the swipe area of the UIScrollview, but i amnot able to do that.

我想将滑动区域设置为顶部UIScrollview，但我想设置所有内容。

I would like to set the swipe area only to the top of the UIScrollview, but i would like to set all the content visible.

更新：

- (void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    if ([touches count] > 0) {
        UITouch *tempTouch = [touches anyObject];
        CGPoint touchLocation = [tempTouch locationInView:self.categoryScrollView];
        if (touchLocation.y > 280.0)
        {
            NSLog(@"enabled");
            self.categoryScrollView.scrollEnabled = YES;
        }
    }
    [self.categoryScrollView touchesBegan:touches withEvent:event];
}

- (void) touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
//    [super touchesEnded:touches withEvent:event];
    self.categoryScrollView.scrollEnabled = YES;
    [self.categoryScrollView touchesBegan:touches withEvent:event];
}

解决方案：
别忘了在UIScrollView上将delaysContentTouches设置为NO

Solution: dont forget to set delaysContentTouches to NO on the UIScrollView

self.categoryScrollView.delaysContentTouches = NO;

推荐答案

您可以在 UIScrollView ，在视图控制器中覆盖 touchesBegan：withEvent：，检查是否有任何触摸开始于您要启用的区域滑动，如果答案为是，则重新启用滚动。同时覆盖 touchesEnded：withEvent：和 touchesCancelled：withEvent：以在触摸结束时禁用滚动。

You can disable scrolling on the UIScrollView, override touchesBegan:withEvent: in your view controller, check if any of the touches began in the area where you'd like to enable swipes, and if the answer is 'yes', re-enable scrolling. Also override touchesEnded:withEvent: and touchesCancelled:withEvent: to disable scrolling when the touches are over.

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