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Prepare UX rework:

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- Improve sticky headers: handle swipe down gesture
This commit is contained in:
Giom Foret
2017-04-27 12:06:13 +02:00
parent eabcec4455
commit 5b203cfd79
3 changed files with 118 additions and 63 deletions
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Riot/ViewController/RecentsViewController.m
+93 -61
View File
@@ -449,87 +449,96 @@
NSUInteger bottomContainerOffset = 0;
CGRect frame;
UIView *sectionHeader = [self tableView:self.recentsTableView viewForStickyHeaderInSection:0];
sectionHeader.tag = 0;
frame = sectionHeader.frame;
frame.origin.y = 0;
sectionHeader.frame = frame;
sectionHeader.autoresizingMask = UIViewAutoresizingFlexibleWidth;
[self.stickyHeadersTopContainer addSubview:sectionHeader];
topContainerOffset = sectionHeader.frame.size.height;
// Handle tap gesture
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(didTapStickyHeader:)];
[tap setNumberOfTouchesRequired:1];
[tap setNumberOfTapsRequired:1];
[tap setDelegate:self];
[sectionHeader addGestureRecognizer:tap];
// Handle vertical swipe gesture
UISwipeGestureRecognizer *swipe = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(didTapStickyHeader:)];
[swipe setNumberOfTouchesRequired:1];
[swipe setDirection:UISwipeGestureRecognizerDirectionDown];
[sectionHeader addGestureRecognizer:swipe];
UIView *stickyHeader = [self viewForStickyHeaderInSection:0 withSwipeGestureRecognizerInDirection:UISwipeGestureRecognizerDirectionDown];
frame = stickyHeader.frame;
frame.origin.y = topContainerOffset;
stickyHeader.frame = frame;
[self.stickyHeadersTopContainer addSubview:stickyHeader];
topContainerOffset = stickyHeader.frame.size.height;
for (NSUInteger index = 1; index < sectionsCount; index++)
{
sectionHeader = [self tableView:self.recentsTableView viewForStickyHeaderInSection:index];
sectionHeader.tag = index;
frame = sectionHeader.frame;
stickyHeader = [self viewForStickyHeaderInSection:index withSwipeGestureRecognizerInDirection:UISwipeGestureRecognizerDirectionDown];
frame = stickyHeader.frame;
frame.origin.y = topContainerOffset;
sectionHeader.frame = frame;
sectionHeader.autoresizingMask = UIViewAutoresizingFlexibleWidth;
[self.stickyHeadersTopContainer addSubview:sectionHeader];
stickyHeader.frame = frame;
[self.stickyHeadersTopContainer addSubview:stickyHeader];
topContainerOffset += frame.size.height;
// Handle tap gesture
tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(didTapStickyHeader:)];
[tap setNumberOfTouchesRequired:1];
[tap setNumberOfTapsRequired:1];
[tap setDelegate:self];
[sectionHeader addGestureRecognizer:tap];
// Handle vertical swipe gesture
swipe = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(didTapStickyHeader:)];
[swipe setNumberOfTouchesRequired:1];
[swipe setDirection:UISwipeGestureRecognizerDirectionDown];
[sectionHeader addGestureRecognizer:swipe];
sectionHeader = [self tableView:self.recentsTableView viewForStickyHeaderInSection:index];
sectionHeader.tag = index;
frame = sectionHeader.frame;
stickyHeader = [self viewForStickyHeaderInSection:index withSwipeGestureRecognizerInDirection:UISwipeGestureRecognizerDirectionUp];
frame = stickyHeader.frame;
frame.origin.y = bottomContainerOffset;
sectionHeader.frame = frame;
sectionHeader.autoresizingMask = UIViewAutoresizingFlexibleWidth;
[self.stickyHeadersBottomContainer addSubview:sectionHeader];
stickyHeader.frame = frame;
[self.stickyHeadersBottomContainer addSubview:stickyHeader];
bottomContainerOffset += frame.size.height;
// Handle tap gesture
tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(didTapStickyHeader:)];
[tap setNumberOfTouchesRequired:1];
[tap setNumberOfTapsRequired:1];
[tap setDelegate:self];
[sectionHeader addGestureRecognizer:tap];
// Handle vertical swipe gesture
swipe = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(didTapStickyHeader:)];
[swipe setNumberOfTouchesRequired:1];
[swipe setDirection:UISwipeGestureRecognizerDirectionUp];
[sectionHeader addGestureRecognizer:swipe];
}
[self refreshStickyHeadersContainersHeight];
}
}
- (void)didTapStickyHeader:(UIGestureRecognizer*)gestureRecognizer
- (UIView *)viewForStickyHeaderInSection:(NSInteger)section withSwipeGestureRecognizerInDirection:(UISwipeGestureRecognizerDirection)swipeDirection
{
UIView *stickyHeader = [self tableView:self.recentsTableView viewForStickyHeaderInSection:section];
stickyHeader.tag = section;
stickyHeader.autoresizingMask = UIViewAutoresizingFlexibleWidth;
// Remove existing gesture recognizers
while (stickyHeader.gestureRecognizers.count)
{
UIGestureRecognizer *gestureRecognizer = stickyHeader.gestureRecognizers.lastObject;
[stickyHeader removeGestureRecognizer:gestureRecognizer];
}
// Handle tap gesture, the section is moved up on the tap.
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(didTapOnSectionHeader:)];
[tap setNumberOfTouchesRequired:1];
[tap setNumberOfTapsRequired:1];
[stickyHeader addGestureRecognizer:tap];
// Handle vertical swipe gesture with the provided direction, by default the section will be moved up on this swipe.
UISwipeGestureRecognizer *swipe = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(didSwipeOnSectionHeader:)];
[swipe setNumberOfTouchesRequired:1];
[swipe setDirection:swipeDirection];
[stickyHeader addGestureRecognizer:swipe];
return stickyHeader;
}
- (void)didTapOnSectionHeader:(UIGestureRecognizer*)gestureRecognizer
{
UIView *view = gestureRecognizer.view;
NSInteger section = view.tag;
// Scroll to the top of this section
if ([self.recentsTableView numberOfRowsInSection:section] > 0)
{
[self.recentsTableView scrollToRowAtIndexPath:[NSIndexPath indexPathForItem:0 inSection:view.tag] atScrollPosition:UITableViewScrollPositionTop animated:YES];
[self.recentsTableView scrollToRowAtIndexPath:[NSIndexPath indexPathForItem:0 inSection:section] atScrollPosition:UITableViewScrollPositionTop animated:YES];
}
}
- (void)didSwipeOnSectionHeader:(UISwipeGestureRecognizer*)gestureRecognizer
{
UIView *view = gestureRecognizer.view;
NSInteger section = view.tag;
if ([self.recentsTableView numberOfRowsInSection:section] > 0)
{
// Check whether the first cell of this section is already visible.
UITableViewCell *firstSectionCell = [self.recentsTableView cellForRowAtIndexPath:[NSIndexPath indexPathForItem:0 inSection:section]];
if (firstSectionCell)
{
// Scroll to the top of the previous section (if any)
if ([self.recentsTableView numberOfRowsInSection:(section - 1)] > 0)
{
[self.recentsTableView scrollToRowAtIndexPath:[NSIndexPath indexPathForItem:0 inSection:(section - 1)] atScrollPosition:UITableViewScrollPositionTop animated:YES];
}
}
else
{
// Scroll to the top of this section
[self.recentsTableView scrollToRowAtIndexPath:[NSIndexPath indexPathForItem:0 inSection:section] atScrollPosition:UITableViewScrollPositionTop animated:YES];
}
}
}
@@ -1094,6 +1103,29 @@
return 30.0f;
}
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
UIView *sectionHeader = [super tableView:tableView viewForHeaderInSection:section];
sectionHeader.tag = section;
if (_enableStickyHeaders)
{
while (sectionHeader.gestureRecognizers.count)
{
UIGestureRecognizer *gestureRecognizer = sectionHeader.gestureRecognizers.lastObject;
[sectionHeader removeGestureRecognizer:gestureRecognizer];
}
// Handle tap gesture
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(didTapOnSectionHeader:)];
[tap setNumberOfTouchesRequired:1];
[tap setNumberOfTapsRequired:1];
[sectionHeader addGestureRecognizer:tap];
}
return sectionHeader;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell* cell = [self.recentsTableView cellForRowAtIndexPath:indexPath];