项目中提出这么个需求，在首页中上拉，然后直接跳转到地图找房界面，想了下，用监听scrollview加动画实现了这一效果，上代码：
// 监听scrollview的滑动事件，这里我设置了上拉距离超过200就跳转
-(void)scrollViewDidScroll:(UIScrollView *)scrollView {
NSLog(@"%f",scrollView.contentOffset.y);
if (scrollView.contentOffset.y >= 200) {
[self pushToMapSearchHouseVC];
}
}
// 跳转
-(void)pushToMapSearchHouseVC {
// 搞一个动画
CATransition *trans = [CATransition animation];
trans.duration = 1;
trans.type = kCATransitionPush;
trans.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
// 设置样式为从底部向上推出
trans.subtype = kCATransitionFromTop;
[self.navigationController.view.layer addAnimation:trans forKey:nil];
MapSerachViewController *VC=[[MapSerachViewController alloc]init];
VC.type = 3;
[self.navigationController pushViewController:VC animated:YES];
}
-(void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
UITouch *touch = [touches anyObject];
CGPoint point = [touch locationInView:self.view];
if (point.y < -200) {
/*
跳转
*/
}
}