Master-Details SplitViewController自定义UINavigationBar

Question

我有一个Master-Details项目设置并在XCode中运行，没有任何问题，一切正常。但是，当我尝试绕过NavigationBar的右上角和左上角时，它会产生非常奇怪的效果。它基本上抵消了细节视图上“后退”左按钮的“触摸”响应。

按钮仍然有效，但似乎iPhone只能在用户点击导航栏下方而不是按钮本身时才能接听用户的触摸。

我的代码是：

// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect
{
    UIColor *color = [UIColor darkGrayColor];
    UIImage *img = [UIImage imageNamed:@"nav-bar"];
    [img drawInRect:CGRectMake(0, 0, self.frame.size.width, self.frame.size.height)];
    self.tintColor = color;

    // Create mask to round corners
    CGRect bounds = CGRectMake(0, 0, self.frame.size.width, self.frame.size.height);
    UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:bounds byRoundingCorners:(UIRectCornerTopLeft | UIRectCornerTopRight) cornerRadii:CGSizeMake(10.0, 10.0)];

    CAShapeLayer *maskLayer = [CAShapeLayer layer];
    maskLayer.frame = bounds;
    maskLayer.path = maskPath.CGPath;

    // Apply mask to navigation bar
    [self.layer addSublayer:maskLayer];
    self.layer.mask = maskLayer;

    // Apply logo to navigation bar
    UIImageView *imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"logo"]];
    self.topItem.titleView = imageView;
}

这是我的意思的屏幕截图，当我触摸箭头指向的位置时按钮仅响应：

---更新---

经过一些测试后我得知问题在于'self.layer.mask = maskLayer'行。我已经重构了代码并在另一个只使用xib文件而不是故事板的项目中进行了测试，并且没有任何问题，但它仍然无法在当前项目中运行。

CGRect bounds = CGRectMake(0, 0, navigationController.navigationBar.bounds.size.width,
                                   navigationController.navigationBar.bounds.size.height);
        UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:bounds byRoundingCorners:(UIRectCornerTopLeft | UIRectCornerTopRight) cornerRadii:CGSizeMake(10.0, 10.0)];

        CAShapeLayer *maskLayer = [CAShapeLayer layer];
        maskLayer.frame = bounds;
        maskLayer.path = maskPath.CGPath;

        // Apply mask to navigation bar
        //navigationController.navigationBar.layer.mask = maskLayer;
        [navigationController.navigationBar.layer addSublayer:maskLayer];
        navigationController.navigationBar.layer.mask = maskLayer;

Answer 1

使用self.bounds代替self.frame。您可能希望相对于您自己的坐标系绘制，而不是相对于您自己的父视图。