//// RootViewController.m// LessonUIView-03//// Created by lanou3g on 15/9/23.// Copyright (c) 山神. All rights reserved.//#import "RootViewController.h"@interface RootViewController ()@property (nonatomic, retain) UIView *myView;@end@implementation RootViewController- (void)viewDidLoad {[super viewDidLoad];// Do any additional setup after loading the view.[self addSomeViews];}// 创建视图- (void)addSomeViews{self.myView = [[[UIView alloc] initWithFrame:CGRectMake(100, 100, 100, 100)] autorelease];self.myView.backgroundColor = [UIColor greenColor];[self.view addSubview:self.myView];[self.myView release];// layer是负责显示图层的// 要更改咱们看到的图形形状需要更改layer// 设置圆角self.myView.layer.cornerRadius = self.myView.frame.size.width / 2;// 设置阴影颜色// CGColorRef涂层绘制的颜色self.myView.layer.shadowColor = [UIColor blackColor].CGCol
