ios – 在外面敲击时移除视图

第一种方法：

您可以为自定义视图设置标记：

customview.tag=99;

然后在viewcontroller中,使用touchesBegan：withEvent：delegate

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{


    UITouch *touch = [touches anyObject];

    if(touch.view.tag!=99){
        customview.hidden=YES;
    }

}

第二种方法：

每次你想要弹出一个自定义视图时,它更有可能在它背后有一个叠加层,它将填满你的屏幕(例如一个alpha~0.4的黑色视图).在这些情况下,您可以向其添加UITapGestureRecognizer,并在每次希望显示自定义视图时将其添加到视图中.这是一个例子：

UIView *overlay;

-(void)addOverlay{
        overlay = [[UIView alloc] initWithFrame:CGRectMake(0,self.view.frame.size.width,self.view.frame.size.height)];
    [overlay setBackgroundColor:[UIColor colorWithRed:0 green:0 blue:0 alpha:0.5]];

    UITapGestureRecognizer *overlayTap =
    [[UITapGestureRecognizer alloc] initWithTarget:self
                                        action:@selector(onOverlayTapped)];

    [overlay addGestureRecognizer:overlayTap];



    [self.view addSubview:overlay];


}


- (void)onOverlayTapped
{
    NSLog(@"Overlay tapped");
    //Animate the hide effect,you can also simply use customview.hidden=YES;
    [UIView animateWithDuration:0.2f animations:^{
        overlay.alpha=0;
        customview.alpha=0;

    }completion:^(BOOL finished) {
        [overlay removeFromSuperview];

    }];

}