//
// ViewController.m
// UI1_Calayer
//
// Created by zhangxueming on 15/7/2.
// Copyright (c) 2015年 zhangxueming. All rights reserved.
//
#import "ViewController.h"
@interface ViewController ()
@end
//图层
//CALayer就是图层, 图层的功能是渲染图片和播放动画等, 每当创建一个UIView的时候,系统会自动创建一个CALayer, 但是这个CALayer对象你不能改变, 只能修改某些属性.所以通过修改CALayer,不仅可以修饰UIView的外观, 还可以给UIView添加各种动画. CALayer属于CoreAnimation框架中的类;
//CALayer 每个View都有一个CALayer属性, 每个View都附着在一个层上。
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(100, 100, 100, 100)];
view.backgroundColor = [UIColor redColor];
view.layer.cornerRadius = 15;
view.layer.borderWidth = 10;
[self.view addSubview:view];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
转载于:https://www.cnblogs.com/0515offer/p/4638528.html
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