UIView子类initWithFrame没被调用?

时间:2010-08-06 16:06:58

标签: iphone cocoa-touch

我有一个自定义的UIView子类。在IB中,我指定了一个“占位符”UIView并将该类设置为我的类名。我对drawRect方法的重写是有效的,并且背景正确着色,但是initWithFrame没有触发。为什么呢?

- (id)initWithFrame:(CGRect)frame {
    NSLog(@"initWithFrame");
    if ((self = [super initWithFrame:frame])) {
        noteTextFont = [[UIFont boldSystemFontOfSize:12] retain];
    }
    return self;
}

- (void)drawRect:(CGRect)rect {
    [super drawRect:rect];
    CGContextRef context = UIGraphicsGetCurrentContext();

    UIColor *backgroundColor = [UIColor blackColor];
    [backgroundColor set];
    CGContextFillRect(context, rect);

    UIColor *labelColor = [UIColor lightGrayColor];
    [labelColor set];
    [notificationLabel drawInRect:CGRectMake(44, 18, rect.size.width-20, rect.size.height) withFont:noteTextFont lineBreakMode:UILineBreakModeTailTruncation];

    [self setNeedsLayout];
}

2 个答案:

答案 0 :(得分:52)

从笔尖加载的东西都是-(id)initWithCoder:(NSCoder*)coder

答案 1 :(得分:-2)

因为你正在从它看起来的nib初始化这个视图,所以它使用默认的(UIView的)initWithNibName:而不是使用initWithFrame进行初始化: