我有一个UIView,当我点击按钮时我出现了,我基本上将它用作自定义警报视图.现在,当用户点击我添加到主视图的自定义UIView之外时,我想隐藏cusomt视图,我可以使用customView.hidden = YES轻松完成此操作;但是如何检查视图外的水龙头?
谢谢您的帮助
解决方法
有两种方法:
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];
}];
}