在iOS8中:UIPopoverController presentPopoverFromRect不再适用于keyWindow

Question

正如标题所述,在iOS8中,[UIPopoverController presentPopoverFromRect]不再适用于[UIApplication sharedApplication] .keyWindow.(它在iOS7中有效)

我验证了以下代码:

TestViewController *test = [[TestViewController alloc] initWithNibName:nil bundle:nil];

if (testPopoverController == nil) {
    testPopoverController = [[UIPopoverController alloc] initWithContentViewController:test];
    testPopoverController.popoverContentSize = CGSizeMake(250, 95*5);


}

CGPoint point = [sender convertPoint:CGPointMake(0, 0) toView:nil];
CGRect rect = CGRectMake(point.x, point.y, 24, 24);

[testPopoverController presentPopoverFromRect:rect inView:[UIApplication sharedApplication].keyWindow permittedArrowDirections:UIPopoverArrowDirectionDown animated:YES];

Answer 1

我认为你必须在完整视图/视图控制器中显示它，而不是在 [UIApplication sharedApplication].keyWindow 中显示它

所以修改这段代码：

[testPopoverController presentPopoverFromRect:rect inView:[UIApplication sharedApplication].keyWindow permittedArrowDirections:UIPopoverArrowDirectionDown animated:YES];

到：

[testPopoverController presentPopoverFromRect:rect inView:aViewControllerInYourApp permittedArrowDirections:UIPopoverArrowDirectionDown animated:YES];