downPreView = [[UIProgressView alloc] initWithProgressViewStyle:UIProgressViewStyleDefault];
downPreView.tag = indexPath;
downPreView.frame = CGRectMake(75,28, 215,60);
downPreView.progress = 0.0;
[cell.contentView addSubview:downPreView];
现在我如何开始downPreView
使用标签2
等制作动画?谢谢!