Position和anchorPoint

Main.storyboard

ViewController.m

// ViewController.m

// 7A12.position和anchorPoint

// Created by huan on 16/2/4.

#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