动态更改单元格的backgroundView.backgroundColor

Question

我有以下代码将单元格的背景视图创建为圆角矩形：

- (UIView *)createBackgroundView
{
    CGRect background = CGRectMake(50, 25, self.frame.size.width - 60, 90);
    UIView *backgroundView = [[UIView alloc] initWithFrame:background];
    backgroundView.backgroundColor = [UIColor colorWithRed:0.78 green:0.96 blue:0.39 alpha:1];
    [backgroundView.layer setCornerRadius:7.0f];
    [backgroundView.layer setMasksToBounds:YES];
    return backgroundView;
}

稍后在程序中我想更新backgroundView的backgroundColor，我试过

cell.backgroundView.backgroundColor = [UIColor redColor];

在cellForRowAtIndexPath和willDisplayCell中似乎都没有更新它。

Answer 1

你必须要做的是：

[cell setBackgroundView:[self createBackgroundView]];

---

也许您还应该为方法添加一个参数：

- (UIView *)createBackgroundView:(UIColor *)color;