//集合视图 //创建全局静态重用标识符 static NSString * collectionID = @"id"; @interface ...

//滚动视图，单其本身也是一个独立的视图 myscrollView = [[UIScrollView alloc]initWithFrame:s...

//按钮初始化 UIButton * loginButton = [UIButton buttonWithType:UIButtonTypeSy...

//文本输入框 //初始化 UITextField * inputUserName = [[UITextField alloc]init]; /...

//初始化 UILabel * userName = [[UILabel alloc]init]; //设置位置 userName.frame ...

//UIImageView //初始化 UIImageView * BGimageView = [[UIImageView alloc]init...