项目中需要使用下拉的动画效果，MJ上的是图片在左，文字在右（而且没有样式选择），我们需要的是图片在上文字在下，我们只需要继承MJRefreshGifHeader，即可修改样式。
代码：
-(void)prepare{ [super prepare]; // 设置普通状态的动画图片 NSMutableArray *idleImages = [NSMutableArray array]; for (NSUInteger i = 1; i<=60; i++) { UIImage *image = [UIImage imageNamed:[NSString stringWithFormat:@"dropdown_anim__000%zd", i]]; [idleImages addObject:image]; } [self setImages:idleImages forState:MJRefreshStateIdle]; // 设置即将刷新状态的动画图片（一松开就会刷新的状态） NSMutableArray *refreshingImages = [NSMutableArray array]; for (NSUInteger i = 1; i<=3; i++) { UIImage *image = [UIImage imageNamed:[NSString stringWithFormat:@"dropdown_loading_0%zd", i]]; [refreshingImages addObject:image]; } [self setImages:refreshingImages forState:MJRefreshStatePulling]; [self setImages:refreshingImages forState:MJRefreshStateRefreshing]; self.lastUpdatedTimeLabel.hidden = YES; self.stateLabel.hidden = NO; self.stateLabel.textColor = [UIColor blackColor]; self.mj_h = 80; } //在这修改图片和label的位置 - (void)placeSubviews { [super placeSubviews]; self.gifView.contentMode = UIViewContentModeCenter; //调整图片的位置 CGRect labelframe = self.stateLabel.frame; labelframe.size.height = 15; labelframe.origin.y = self.bounds.size.height - 20; self.stateLabel.frame = labelframe; CGPoint center = self.center; center.y = CGRectGetMinY(self.stateLabel.frame) - self.gifView.mj_h / 2.0; self.gifView.center = center; }