使用runtime关联对象将视图添加到视图的类目里

iOS加载遮罩视图

最新推荐文章于 2025-09-12 16:32:54 发布

转载最新推荐文章于 2025-09-12 16:32:54 发布 · 61 阅读

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原文链接：http://www.cnblogs.com/hxwj/p/5306777.html

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#runtime

//get方法
- (RJCircularLoaderView*)rj_circularLoaderView
{
    RJCircularLoaderView *loaderView = objc_getAssociatedObject(self, @selector(rj_circularLoaderView));
    if (!loaderView) {
        loaderView = [RJCircularLoaderView new];
        objc_setAssociatedObject(self, @selector(rj_circularLoaderView), loaderView, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
    }
    return loaderView;
}//添加在视图上
- (void)startLoader
{
    RJCircularLoaderView *loaderView = self.rj_circularLoaderView;
    loaderView.frame = self.bounds;
    [self addSubview:loaderView];
    
    loaderView.progress = 0;
}