DXPopover

UIImageView *imageV= [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 200, 200)];
imageV.image = [UIImage imageNamed:@"ig20.jpg"];
DXPopover *popover = [DXPopover popover];
[popover showAtView:self.btn1 withContentView:imageV];

[self.popover showAtPoint:yourPoint popoverPostion:DXPopoverPositionDown withContentView:self.tableView inView:self.tabBarController.view]; // 1.Set the show point 2.set The position if up or down staying the showPoint, 3.Your contentView 4.The containerView
__weak typeof(self)weakSelf = self;
self.popover.didDismissHandler = ^{ //The callback of popover dimissal.
    [weakSelf bounceTargetView:titleView];
};