nculph的专栏

- (id)initWithFrame:(CGRect)frame{ self = [super initWithFrame:frame]; if (self) { _backImgView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 65, 23)]; _backImgView.ima

// 会将响应者链上的所有子视图统统移除-------------------- [tv1 removeFromSuperview];// 循环创建10个子视图 v1加在v2上 v2加在v3上 .... 随机颜色 子视图比父视图宽高各小20个像素-------------------------------------------------------- UIView * preV