iphone利用UIPopoverPresentationCon

这个问题很简单，不废话，直接上代码

- (void)filterButtonAction:(UIButton *)sender
{
    SHSearchViewController *searchVC = nil;
    searchVC = [[SHSearchViewController alloc] initWithHotWordModel:self.hotwordModel];
    searchVC.preferredContentSize = CGSizeMake(300, 300);
    searchVC.modalPresentationStyle = UIModalPresentationPopover;
    searchVC.popoverPresentationController.sourceView = sender;
    searchVC.popoverPresentationController.sourceRect = sender.bounds;
    searchVC.popoverPresentationController.passthroughViews = @[self.searchBar];
    searchVC.popoverPresentationController.permittedArrowDirections = UIPopoverArrowDirectionUp;
    searchVC.popoverPresentationController.delegate = self;
    [self presentViewController:searchVC animated:true completion:nil];
}

实现代理

-(UIModalPresentationStyle)adaptivePresentationStyleForPresentationController:(UIPresentationController *)controller
{
    return UIModalPresentationNone;
}