我正在尝试子类化,出于某种原因,我遇到了三个问题。
首先是创建透明背景。第二个是更改textLabel
s 字体。第三个是为底部创建一个边框drawRect:
(绿色只是一个测试器)
这是我所有的子类的代码:
+ (EVSectionHeaderView *)sectionHeaderViewWithSectionHeaderViewStyle:(SectionHeaderViewStyle)sectionHeaderViewStyle title:(NSString *)title
{
EVSectionHeaderView *sectionHeaderView = [[EVSectionHeaderView alloc] init];
UIView *backgroundView = [[UIView alloc] initWithFrame:sectionHeaderView.frame];
[sectionHeaderView setBackgroundView:backgroundView];
switch (sectionHeaderViewStyle) {
case SectionHeaderViewStylePaper:
[sectionHeaderView.backgroundView setBackgroundColor:[UIColor colorWithPatternImage:[UIImage imageNamed:@"Paper Texture"]]];
break;
default:
break;
}
[sectionHeaderView.layer setOpacity:0.1f];
[sectionHeaderView.textLabel setText:title];
[sectionHeaderView.textLabel setFont:[UIFont fontWithName:@"AvenirNextCondensed-DemiBold" size:14.0f]];
[sectionHeaderView.textLabel setTextColor:[UIColor darkGrayColor]];
NSLog(@"Section background: %@", sectionHeaderView.backgroundView);
return sectionHeaderView;
}
- (void)drawRect:(CGRect)rect
{
[super drawRect:rect];
CGContextRef context = UIGraphicsGetCurrentContext();
// Bottom border
//
CGContextSetFillColorWithColor(context, [[UIColor greenColor] colorWithAlphaComponent:0.12f].CGColor);
CGContextFillRect(context, CGRectMake(0.0f, CGRectGetHeight(self.contentView.frame) - 1.0f, CGRectGetWidth(self.contentView.frame), 1.0f));
}
它成功地记录了具有正确图像背景颜色和标题的背景视图。此外,textLabel 的颜色也会发生变化。但不是其他两个。
有谁知道为什么?
谢谢