iPad模态推出sheet,点击外部消失

UITapGestureRecognizer *recognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTapBehind:)];

[recognizer setNumberOfTapsRequired:1];
recognizer.cancelsTouchesInView = NO; //So the user can still interact with controls in the modal view
[self.view.window addGestureRecognizer:recognizer];

- (void)handleTapBehind:(UITapGestureRecognizer *)sender
{

if (sender.state == UIGestureRecognizerStateEnded)
{
CGPoint location = [sender locationInView:nil]; //Passing nil gives us coordinates in the window

//Then we convert the tap's location into the local view's coordinate system, and test to see if it's in or outside. If outside, dismiss the view.

if (![self.view pointInside:[self.view convertPoint:location fromView:self.view.window] withEvent:nil])
{
// Remove the recognizer first so it's view.window is valid.
[self.view.window removeGestureRecognizer:sender];
[self dismissModalViewControllerAnimated:YES];
}
}
}

iOS7.0 可行, iOS8.0  handleTap不走

加代理

UIGestureRecognizerDelegate

-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer*)otherGestureRecognizer
{
return YES;
}

recognizer.delegate = self;

if (sender.state == UIGestureRecognizerStateEnded) {

UIView *rootView = self.view.window.rootViewController.view;
CGPoint location = [sender locationInView:rootView];
if (![self.view pointInside:[self.view convertPoint:location fromView:rootView] withEvent:nil]) {
[self dismissViewControllerAnimated:YES completion:^{
[self.view.window removeGestureRecognizer:sender];
}];
}
}

原网页http://stackoverflow.com/questions/25638409/dismiss-modal-form-sheet-view-on-outside-tap-ios-8