Main.storyboard
ViewController.m
//
// ViewController.m
// 7A12.position和anchorPoint
//
// Created by huan on 16/2/4.
// Copyright © 2016年 huanxi. All rights reserved.
//
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
//创建一个图层
CALayer *layer = [CALayer layer];
layer.backgroundColor = [UIColor redColor].CGColor;
layer.bounds = CGRectMake(0, 0, 100, 100);
//图层的透明度
layer.opacity = 0.5;
//设置位置
layer.position = CGPointMake(100, 100);
//设置锚点
layer.anchorPoint = CGPointMake(0.5, 0.5);
//然后添加到控制器view的图层
[self.view.layer addSublayer:layer];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
结果
