标签:finish animation out gen tom ble aging city fse
#pragma mark 下拉导航栏隐藏
// 当开始滚动视图时,执行该方法。一次有效滑动(开始滑动,滑动一小段距离,只要手指不松开,只算一次滑动),只执行一次。
- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView
{
//获取开始位置
beginContentY = scrollView.contentOffset.y;
}
// 滑动scrollView,并且手指离开时执行。一次有效滑动,只执行一次。
// 当pagingEnabled属性为YES时,不调用,该方法
- (void)scrollViewWillEndDragging:(UIScrollView *)scrollView withVelocity:(CGPoint)velocity targetContentOffset:(inout CGPoint *)targetContentOffset
{
//获取结束位置
endContentY = scrollView.contentOffset.y;
if(endContentY-beginContentY > 100)
{
[UIView animateWithDuration:0.25 animations:^{
CGRect rect = navBarView.frame;
rect.origin.y = -64;
navBarView.frame = rect;
_myTableView.y = navBarView.BottomY;
_myTableView.height = SCREENHEIGHT-50;
}];
sectionHeaderHeight = 0;
[_myTableView reloadData];
} else if(endContentY-beginContentY < -100) {
[UIView animateWithDuration:0.25 animations:^{
CGRect rect = navBarView.frame;
rect.origin.y = 0;
navBarView.frame = rect;
_myTableView.y = navBarView.BottomY;
_myTableView.height = SCREENHEIGHT-navBarView.height-50;
} completion:^(BOOL finished) {
sectionHeaderHeight = 40;
[_myTableView reloadData];
}];
}
}
标签:finish animation out gen tom ble aging city fse
原文地址:http://www.cnblogs.com/liaolijun/p/6815689.html