https://github.com/zhangao0086/dkstickyfooterview

A simple UIView with sticky.
https://github.com/zhangao0086/dkstickyfooterview

Last synced: 29 days ago
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A simple UIView with sticky.

• Host: GitHub
• URL: https://github.com/zhangao0086/dkstickyfooterview
• Owner: zhangao0086
• License: mit
• Created: 2015-05-08T11:04:22.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2015-08-26T07:09:35.000Z (about 9 years ago)
• Last Synced: 2024-05-09T19:57:07.732Z (6 months ago)
• Language: Objective-C
• Homepage:
• Size: 1.44 MB
• Stars: 9
• Watchers: 3
• Forks: 5
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# DKStickyFooterView

The footer view will stick to the bottom when scroll to the *contentOffset* of max or scroll up.



# Easy to use

```objective-c

DKStickyFooterView *footerView = [[DKStickyFooterView alloc] initWithFrame:CGRectMake(0, 0, 0, 44)];

[self.tableView addSubview:footerView];

```

## Set *zPosition* if added to UITableView

```objective-c

footerView.layer.zPosition = 1;

```

# Based on Key-Value Observing

```objective-c

- (void)observeValueForKeyPath:(NSString *)keyPath

                      ofObject:(id)object

                        change:(NSDictionary *)change

                       context:(void *)context {

    

    if ([keyPath isEqualToString:KEY_PATH_CONTENTOFFSET]) {

        CGFloat newOffsetY = [[change valueForKey:NSKeyValueChangeNewKey] CGPointValue].y;

        CGFloat oldOffsetY = [[change valueForKey:NSKeyValueChangeOldKey] CGPointValue].y;

        CGFloat delta = newOffsetY - oldOffsetY;

        

        CGFloat totalDelta = self.beganContentOffset.y - newOffsetY;

        

        [self updateYForContentOffset];

        

        if (ABS(totalDelta) < MINIMUM_SCROLLING_LENGTH || ABS(delta) <= 0.5) {

            return;

        }

        if (delta > 0 && self.scrollView.contentOffset.y > 0.0

            && self.scrollView.contentOffset.y + self.scrollView.height < self.scrollView.contentSize.height) {

            

            if (self.isShow) {

                self.isShow = NO;

            }

        } else {

            if (!self.isShow) {

                self.isShow = YES;

            }

        }

        

        [UIView animateWithDuration:ANIMATION_DURATION animations:^{

            [self updateYForContentOffset];

        }];

        

    } else if ([keyPath isEqualToString:KEY_PATH_FRAME]) {

        if (!self.isShow) {

            [self updateYForContentOffset];

        }

    } else {

        [super observeValueForKeyPath:keyPath ofObject:object change:change context:context];

    }

}

```

# Licence

This code is distributed under the terms and conditions of the MIT license.