如何以编程方式滚动iOS WKWebView，迅速4 [英] How to Programmatically Scroll iOS WKWebView, swift 4

问题描述

所以我的问题是:在我的iOS webview应用程序中加载了一个网站(www上的任何网站)之后，如何使该应用程序以编程方式垂直滚动到看不见的任何内容?

So my question is: After a website(any websites on the www) has been loaded up in my iOS webview app how to make the app Programmatically Scroll vertically to any of the contents thats out of view?

//  ViewController.swift
//  myWebView

import UIKit
import WebKit

class ViewController: UIViewController, WKNavigationDelegate {

  @IBOutlet weak var myWebView: WKWebView!

  override func viewDidLoad() {
    super.viewDidLoad()

    // Do any additional setup after loading the view, typically from a nib.
  }

  override func viewDidAppear(_ animated: Bool) {
    super.viewDidAppear( animated )

    let urlString:String = "https://www.apple.com"
    let url:URL = URL(string: urlString)!
    let urlRequest:URLRequest = URLRequest(url: url)

    myWebView.load(urlRequest)
  }


  func webViewDidFinishLoad(_ webView: WKWebView) {

    let scrollPoint = CGPoint(x: 0, y: webView.scrollView.contentSize.height - webView.frame.size.height)
    webView.scrollView.setContentOffset(scrollPoint, animated: true )

  }
}

推荐答案

这还将考虑scrollView原点的可能水平偏移:

This will also account for the possible horizontal offset of the origin of the scrollView:

var scrollPoint = self.view.convert(CGPoint(x: 0, y: 0), to: webView.scrollView)
scrollPoint = CGPoint(x: scrollPoint.x, y: webView.scrollView.contentSize.height - webView.frame.size.height)
webView.scrollView.setContentOffset(scrollPoint, animated: true)

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