当没有数据时,设置一张背景图片提示无数据
#import "UIView+AutoLayout.h" @property (nonatomic, weak) UIImageView *noDataView; - (UIImageView *)noDataView { if (!_noDataView) { // 添加一个"没有数据"的提醒 UIImageView *noDataView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"icon_deals_empty"]]; [self.view addSubview:noDataView]; [noDataView autoCenterInSuperview]; self.noDataView = noDataView; } return _noDataView; }