Ios 如何使UIScrollView的内容垂直滚动而不是水平滚动?
我正在使用它构建一个自定义日历应用程序,默认情况下,它设置为水平滚动月份。根据我的理解,将其设置为垂直滚动将需要以垂直方式排列内容(月份) JTcalendar的作者提出了建议,但尚不清楚如何准确地修改Ios 如何使UIScrollView的内容垂直滚动而不是水平滚动?,ios,uiscrollview,Ios,Uiscrollview,我正在使用它构建一个自定义日历应用程序,默认情况下,它设置为水平滚动月份。根据我的理解,将其设置为垂直滚动将需要以垂直方式排列内容(月份) JTcalendar的作者提出了建议,但尚不清楚如何准确地修改contentOffset。以下是包含contentOffset的函数: JTCalendar.m: - (void)scrollViewDidScroll:(UIScrollView *)sender { if(self.calendarAppearance.isWeekMode){
contentOffset
。以下是包含contentOffset
的函数:
JTCalendar.m:
- (void)scrollViewDidScroll:(UIScrollView *)sender
{
if(self.calendarAppearance.isWeekMode){
return;
}
if(sender == self.menuMonthsView && self.menuMonthsView.scrollEnabled){
self.contentView.contentOffset = CGPointMake(sender.contentOffset.x * calendarAppearance.ratioContentMenu, self.contentView.contentOffset.y);
}
else if(sender == self.contentView && self.contentView.scrollEnabled){
self.menuMonthsView.contentOffset = CGPointMake(sender.contentOffset.x / calendarAppearance.ratioContentMenu, self.menuMonthsView.contentOffset.y);
}
}
- (void)configureConstraintsForSubviews
{
self.contentOffset = CGPointMake(self.contentOffset.x, 0); // Prevent bug when contentOffset.y is negative
CGFloat x = 0;
CGFloat width = self.frame.size.width;
CGFloat height = self.frame.size.height;
for(UIView *view in monthsViews){
view.frame = CGRectMake(x, 0, width, height);
x = CGRectGetMaxX(view.frame);
}
self.contentSize = CGSizeMake(width * NUMBER_PAGES_LOADED, height);
}
JTCalendarContentView.m:
- (void)scrollViewDidScroll:(UIScrollView *)sender
{
if(self.calendarAppearance.isWeekMode){
return;
}
if(sender == self.menuMonthsView && self.menuMonthsView.scrollEnabled){
self.contentView.contentOffset = CGPointMake(sender.contentOffset.x * calendarAppearance.ratioContentMenu, self.contentView.contentOffset.y);
}
else if(sender == self.contentView && self.contentView.scrollEnabled){
self.menuMonthsView.contentOffset = CGPointMake(sender.contentOffset.x / calendarAppearance.ratioContentMenu, self.menuMonthsView.contentOffset.y);
}
}
- (void)configureConstraintsForSubviews
{
self.contentOffset = CGPointMake(self.contentOffset.x, 0); // Prevent bug when contentOffset.y is negative
CGFloat x = 0;
CGFloat width = self.frame.size.width;
CGFloat height = self.frame.size.height;
for(UIView *view in monthsViews){
view.frame = CGRectMake(x, 0, width, height);
x = CGRectGetMaxX(view.frame);
}
self.contentSize = CGSizeMake(width * NUMBER_PAGES_LOADED, height);
}
在scrollViewDidScroll中: 这一行:
CGPointMake(sender.contentOffset.x * calendarAppearance.ratioContentMenu, self.contentView.contentOffset.y);
应该是这样的:
CGPointMake(sender.contentOffset.x, self.contentView.contentOffset.y * calendarAppearance.ratioContentMenu);
这一行:
self.menuMonthsView.contentOffset = CGPointMake(sender.contentOffset.x / calendarAppearance.ratioContentMenu, self.menuMonthsView.contentOffset.y);
self.contentSize = CGSizeMake(width * NUMBER_PAGES_LOADED, height);
应该是这样的:
self.menuMonthsView.contentOffset = CGPointMake(sender.contentOffset.x, self.menuMonthsView.contentOffset.y / calendarAppearance.ratioContentMenu);
在ConfigureConstraintsforSubview中,有几个地方可能需要修改。不确定以下行,因为它被设置为修复一个特定的bug,所以您可以暂时将其注释掉,看看会发生什么:
// Probably comment this out
self.contentOffset = CGPointMake(self.contentOffset.x, 0); // Prevent bug when contentOffset.y is negative
这段代码:
for(UIView *view in monthsViews){
view.frame = CGRectMake(x, 0, width, height);
x = CGRectGetMaxX(view.frame);
}
应该是这样的:(将x变量重命名为y)
最后,这一行:
self.menuMonthsView.contentOffset = CGPointMake(sender.contentOffset.x / calendarAppearance.ratioContentMenu, self.menuMonthsView.contentOffset.y);
self.contentSize = CGSizeMake(width * NUMBER_PAGES_LOADED, height);
应该是:
self.contentSize = CGSizeMake(width, height * NUMBER_PAGES_LOADED);
我没有测试过这些,但基于您发布的代码和我过去使用过JTCal的事实,这应该会让您走上正确的道路。这允许垂直滚动,但当滚动停止时,日子就消失了。为什么会这样?