首先建一个popviewcontroller,实现数据写一个代理回调。在跳转之前设置contorller的frame.然后背景设置透明度，tableview 滚动enabled设置
- (IBAction)selectRightItem:(UIBarButtonItem*)sender
{
if(_backgroudView!=nil) {
[selfviewWillDisappear:YES];
return;
}
_tableView.scrollEnabled=NO;
//pop.modalPresentationStyle = UIModalPresentationPopover;
//UIPopoverPresentationController *popVC = pop.popoverPresentationController;
//popVC.delegate = self;
//popVC.barButtonItem = sender;
pop.delegate=self;
pop.view.frame=CGRectMake(SCREENWIDTH-10-134,64,134,7*44);
_backgroudView=[[BackgroudViewalloc]initWithFrame:CGRectMake(0,0,self.view.frame.size.width,self.view.frame.size.height)];
[_backgroudViewsetBackgroundColor:[UIColorcolorWithWhite:0.0alpha:0.4]];
[_backgroudViewaddSubview:pop.view];
UITapGestureRecognizer*tapgestureRecognizer=[[UITapGestureRecognizeralloc]initWithTarget:selfaction:@selector(viewWillDisappear:)];
tapgestureRecognizer.delegate=self;
[_backgroudViewaddGestureRecognizer:tapgestureRecognizer];
[self.view.windowaddSubview:_backgroudView];
}
-(void)popoverViewdidSelectRowAtIndex:(NSInteger)index
{
NSLog(@"index=====%d",index);
[selfviewWillDisappear:YES];
}
//- (UIModalPresentationStyle)adaptivePresentationStyleForPresentationController:(UIPresentationController *)controller
//{
//return UIModalPresentationNone;
//}
-(void)viewWillDisappear:(BOOL)animated
{
_tableView.scrollEnabled=YES;
[_backgroudViewremoveFromSuperview];
_backgroudView=nil;
}
-(void)touchesBegan:(NSSet<UITouch*> *)touches withEvent:(UIEvent*)event
{
}
-(BOOL)gestureRecognizer:(UIGestureRecognizer*)gestureRecognizer shouldReceiveTouch:(UITouch*)touch{
if([touch.viewisDescendantOfView:pop.view]) {
returnNO;
}
returnYES;
}
-(void)scrollViewDidScroll:(UIScrollView*)scrollView
{
scrollViewY=scrollView.contentOffset.y;
NSLog(@"scrollViewY======%f",scrollViewY);
}