有的时候,项目中会用到阴影的效果,增加立体感。我们可以让设计师给出切图,用图片填充。我们还可以使用几句代码来实现简单的阴影效果。
实现效果图展示一:
实现效果图展示一:
关键代码:
firstView.layer.shadowColor = UIColor.purple.cgColor
firstView.layer.shadowOffset = CGSize(width: 0, height: 20)
firstView.layer.shadowRadius = 10
firstView.layer.shadowOpacity = 0.1
简单解释下:
shadowColor: 阴影颜色
shadowOffset:阴影的范围(自己试下看看效果就晓得了)
shadowRadius: 阴影的圆角
shadowOpacity:阴影的透明度
详细步骤:
- 在storyboard上搭建简单的UI
2.拖线关联
- 设置阴影以及圆角
//
// ViewController.swift
// TestShadow
//
// Created by iOS on 2018/9/14.
// Copyright © 2018年 weiman. All rights reserved.
//
import UIKit
class ViewController: UIViewController {
@IBOutlet weak var firstView: UIView!
@IBOutlet weak var purpleView: UIView!
@IBOutlet weak var blueView: UIView!
override func viewDidLoad() {
super.viewDidLoad()
setup()
}
private func setup() {
firstView.layer.shadowColor = UIColor.purple.cgColor
firstView.layer.shadowOffset = CGSize(width: 0, height: 20)
firstView.layer.shadowRadius = 10
firstView.layer.shadowOpacity = 0.1
purpleView.layer.cornerRadius = 10
purpleView.layer.masksToBounds = true
blueView.layer.cornerRadius = 10
blueView.layer.masksToBounds = true
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
注意:
把firstview的背景颜色设置成透明色,也就是clearColor,效果是
把firstview设置成白色,效果是