iPad UIPopoverController弹出窗口的位置和坐标了

 1 TodoViewController *contentViewController = [[TodoViewController alloc] init];
 2 
 3 UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:contentViewController];
 4 
 5 navigationController.contentSizeForViewInPopover = CGSizeMake(100, 100); //内容大小
 6 
 7     UIPopoverController *popover = [[UIPopoverController alloc] initWithContentViewController:navigationController];
 8 
 9 popover.popoverContentSize = CGSizeMake(300, 300); //弹出窗口大小，如果屏幕画不下，会挤小的。这个值默认是320x1100
10 
11  
12 
13 CGRect popoverRect = CGRectMake(200, 700, 10, 10);
14 
15 [popover presentPopoverFromRect:popoverRect  //popoverRect的中心点是用来画箭头的，如果中心点如果出了屏幕，系统会优化到窗口边缘
16 
17  inView:self.view //上面的矩形坐标是以这个view为参考的
18 
19    permittedArrowDirections:UIPopoverArrowDirectionDown  //箭头方向
20 
21    animated:YES];
22 
23  
24 
25 [contentViewController release];
26 
27 [navigationController release];

转载于:https://www.cnblogs.com/pengyingh/articles/2341774.html