滑动隐藏tabBar

来源：互联网发布：mac怎么删除应用编辑：程序博客网时间：2024/05/14 13:22

在需要滑动隐藏/显示的页面中：

@property(nonatomic,assign)CGFloat historyY;

#pragma mark Delegate

//设置滑动的判定范围

- (void)scrollViewWillEndDragging:(UIScrollView *)scrollView withVelocity:(CGPoint)velocity targetContentOffset:(inout CGPoint *)targetContentOffset

{

if (historyY+20<targetContentOffset->y)

{

[self setTabBarHidden:YES];

}

else if(historyY-20>targetContentOffset->y)

{

[self setTabBarHidden:NO];

}

historyY=targetContentOffset->y;

}

//隐藏显示tabbar

- (void)setTabBarHidden:(BOOL)hidden

{

UIView *tab = self.tabBarController.view;

CGRect tabRect=self.tabBarController.tabBar.frame;

if ([tab.subviews count] < 2) {

return;

}

UIView *view;

if ([[tab.subviews objectAtIndex:0] isKindOfClass:[UITabBar class]]) {

view = [tab.subviews objectAtIndex:1];

} else {

view = [tab.subviews objectAtIndex:0];

}

if (hidden) {

view.frame = tab.bounds;

tabRect.origin.y=[[UIScreen mainScreen]bounds].size.height+self.tabBarController.tabBar.frame.size.height;

} else {

view.frame = CGRectMake(tab.bounds.origin.x, tab.bounds.origin.y, tab.bounds.size.width, tab.bounds.size.height);

tabRect.origin.y=[[UIScreen mainScreen] bounds].size.height-self.tabBarController.tabBar.frame.size.height;

}

[UIView animateWithDuration:0.5f animations:^{

self.tabBarController.tabBar.frame=tabRect;

}completion:^(BOOL finished) {

}];

}

0 0