FormSheet式模态视图，点击模态视图外隐藏模态视图的方法

@import url(http://i.cnblogs.com/Load.ashx?type=style&file=SyntaxHighlighter.css);@import url(/css/cuteeditor.css);

#pragma -mark 点击模态视图外的空白处隐藏模态视图

- (void)viewDidAppear:(BOOL)animated

{

[super viewDidAppear:animated];

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

[_tapRecognizer setNumberOfTapsRequired:1];

_tapRecognizer.cancelsTouchesInView = NO; //So the user can still interact with controls in the modal view

[self.view.window addGestureRecognizer:_tapRecognizer];

[_tapRecognizer setDelegate:(id<UIGestureRecognizerDelegate>)self];

}

- (void)handleTapBehind:(UITapGestureRecognizer *)sender

{

if (sender.state == UIGestureRecognizerStateEnded) {

// passing nil gives us coordinates in the window

CGPoint location = [sender locationInView:nil];

// swap (x,y) on iOS 8 in landscape

if ([[UIDevice currentDevice].systemVersion floatValue] >= 8.0f) {

if (UIInterfaceOrientationIsLandscape([UIApplication sharedApplication].statusBarOrientation)) {

location = CGPointMake(location.y, location.x);

}

}

// 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 dismissViewControllerAnimated:YES completion:nil];

}

}

}

#pragma mark - UIGestureRecognizer Delegate

- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer

{

return YES;

}

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer

{

return YES;

}

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch

{

return YES;

}

转载：http://my.oschina.net/CreeveLiu/blog/347913

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