触摸UIView时更改BOOL

Question

我试图在触摸时设置UIView的更改。它是UIView的子类，并且具有属性BOOL，称为＆＃39; isSelected＆＃39;。

创建视图后，我们将其设置为YES：

self.isSelected = YES;

触摸视图时，运行如下：

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

    if (self.isSelected) {
        self.isSelected = NO;
    } else if (!self.isSelected) {
        self.isSelected = YES;
    }

问题似乎是isSelected似乎总是被视为NO而不是YES。做这个的最好方式是什么。

编辑：退出

-(void)setIsSelected:(BOOL)isSelected {
    NSLog(@"isselected chaned to: %@",isSelected ? @"Yes" : @"No");
}

Answer 1

您重写的setIsSelected:方法永远不会更新该值。你想要：

-(void)setIsSelected:(BOOL)isSelected {
    _isSelected = isSelected;
    NSLog(@"isselected chaned to: %@",isSelected ? @"Yes" : @"No");
}