- [__ NSPlaceholderArray initWithObjects：count：]：尝试从对象[1]＆＃39;中插入nil对象。

Question

self.itemHeadingLabel = [[ShimmeringLabel alloc]initWithFrame:CGRectMake(0, 182, self.view.frame.size.width, 30)];

当它进入库文件时，它会崩溃

- (id)initWithFrame:(CGRect)frame {
self = [super initWithFrame:frame];
if (self) {
    // Initialization code
    [self initializeLayers];
}
return self;

}

在线后崩溃： - self = [super initWithFrame:frame];