此处为REPRO存储库:https://github.com/kaolin/38492498/tree/master我有一个@propertyintpercentScanned。我已经设置了needsDisplayForKey:+(BOOL)needsDisplayForKey:(NSString*)key{if([@"percentScanned"isEqualToString:key]){returnYES;}return[superneedsDisplayForKey:key];}我的展示方式:-(void)display{_percentTextLayer.string=[NS
