iOS点击空白处关闭presentViewController出来的view-天狐博客

当进行ios开发的时候会要到弹出视图方法有时会有这样的需求点击空白处关闭视图

弹出视图

- (void)presentViewController:(UIViewController *)viewControllerToPresent animated: (BOOL)flag completion:(void (^)(void))completion NS_AVAILABLE_IOS(5_0);
关闭被弹出视图

- (void)dismissViewControllerAnimated: (BOOL)flag completion: (void (^)(void))completion NS_AVAILABLE_IOS(5_0);

以下方法是通过给window添加手势UITapGestureRecognizer 判断点击位置来实现点击空白处关闭视图

弹出视图就不用说了下面是在被弹出视图中进行关闭（谁污染谁治理原则）

- (void)viewDidLoad
{
    [super viewDidLoad];
    UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handletapPressGesture:)];
    AppDelegate *app = [[UIApplication sharedApplication] delegate];
    [app.window addGestureRecognizer:tapGesture];

}

-(void)handletapPressGesture:(UITapGestureRecognizer*)sender{
    CGPoint point = [sender locationInView:self.view];
    if (point.x<self.view.frame.origin.x || point.x >self.view.frame.origin.x+self.view.frame.size.width) {
        [self dismissViewControllerAnimated:YES
                                 completion:^{
        //一定要移除手势 否则下次 没有子视图的时候 点击 会崩溃拉
        AppDelegate *app = [[UIApplication sharedApplication] delegate];
        [app.window removeGestureRecognizer:sender];
                                 }];
    }

}

- (void)viewDidLoad

{

[super viewDidLoad];

UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handletapPressGesture:)];

AppDelegate *app = [[UIApplication sharedApplication] delegate];

[app.window addGestureRecognizer:tapGesture];

}

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

CGPoint point = [sender locationInView:self.view];

if (point.x<self.view.frame.origin.x || point.x >self.view.frame.origin.x+self.view.frame.size.width) {

[self dismissViewControllerAnimated:YES

completion:^{

//一定要移除手势否则下次没有子视图的时候点击会崩溃拉

AppDelegate *app = [[UIApplication sharedApplication] delegate];

[app.window removeGestureRecognizer:sender];

}];

}

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iOS点击空白处关闭presentViewController出来的view

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