Swift 重写类方法

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我有个Swift的类NFSRacingFinishedHintView继承于Objective-C的类BaseXibView, 声明如下:

#import <UIKit/UIKit.h>@interface BaseXibView : UIView+ (id)loadFromXib;@end#import "BaseXibView.h"@implementation <span style="font-family: Arial, Helvetica, sans-serif;">BaseXibView</span>- (void)dealloc{    ITTDINFO(@"%@ is dealloced!", [self class]);}+ (id)loadFromXib{    return [[[NSBundle mainBundle] loadNibNamed:NSStringFromClass([self class]) owner:nil options:nil] firstObject];}@end

</pre><pre code_snippet_id="437407" snippet_file_name="blog_20140728_4_634236" name="code" class="objc">NFSRacingFinishedHintView定义如下:

import UIKitclass NFSRacingFinishedHintView: ITTMaskActivityView {     var rank:Int!{        didSet{            self.rankLabel.text = "\(rank)";        }    }        @IBOutlet weak var rankLabel: UILabel!        init(coder aDecoder: NSCoder!) {        super.init(coder: aDecoder)    }        init(frame: CGRect) {        super.init(frame: frame)        // Initialization code    }    func setRank(rank:Int) {        self.rank = rank    }        override class func loadFromXib() -> AnyObject {        var objcts:NSArray = NSBundle.mainBundle().loadNibNamed("NFSRacingFinishedHintView", owner: nil, options: nil);        return objcts.firstObject as NFSRacingFinishedHintView;    }    /*    // Only override drawRect: if you perform custom drawing.    // An empty implementation adversely affects performance during animation.    override func drawRect(rect: CGRect)    {        // Drawing code    }    */}

Swift中类方法使用class关键字，重写用override关键字，由于在Swift中[self class]是不能使用的，所以我在这里直接使用了硬编码。

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