iphone - 通过点击iphone屏幕的任何部分来隐藏视图

Question

我有一个视图，它是 iphone 应用程序中主视图的子视图，我希望当显示子视图并且用户点击除子视图之外的部分屏幕时，子视图应该隐藏。

这是我得到的代码，但它并没有隐藏它：

    UITapGestureRecognizer *tapGR;
tapGR = [[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTap:)] autorelease];
tapGR.numberOfTapsRequired = 1;
[self.View addGestureRecognizer:tapGR];

// Add a delegate method to handle the tap and do something with it.

-(void)handleTap:(UITapGestureRecognizer *)sender
{
if (sender.state == UIGestureRecognizerStateEnded) {
    // handling code
  [myViewSheet removeFromSuperView];

}
}

Answer 1

实现UIGestureRecognizerDelegate协议：.h：

@interface YourView : UIView<UIGestureRecognizerDelegate>

米：

@implementation YourView{
    UIView * subview;
}

...

    subview = [[UIView alloc]initWithFrame:CGRectMake(0, 200, 320, 200)];
    [self addSubview:subview];


    UITapGestureRecognizer *tapGR;
    tapGR = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTap:)];
    tapGR.numberOfTapsRequired = 1;
    tapGR.delegate = self;
    [self addGestureRecognizer:tapGR];

...

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch 
{
    if (touch.view == subView) 
    {
        return NO;
    }
    else 
    {
        return YES; 
    }
}

Answer 2

您可能需要在主视图上设置 userInteractionEnabled = YES（您要附加手势识别器的那个。）