WKWebView:将UIImage插入网页 [英] WKWebView: insert UIImage into web page
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问题描述
在iOS中，给定加载在 WKWebView 内的网页，如何在HTML内显示自己的 UIImage ?
In iOS, given a web page loaded inside a WKWebView, how can I show my own UIImage inside the HTML?
谢谢
推荐答案
一种方法是使用Base64编码.下面的示例应该是一个完整的示例，假设您连接了 UIWebView 并具有正确名称的图像:
One way to do it is using Base64 encoding. The following should be a completely working example, assuming you wire up a UIWebView and have an image of the correct name:
import UIKit
import WebKit
class ViewController: UIViewController {
@IBOutlet weak var webView: UIWebView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
if let image = UIImage(named: "Castle"),
let data = UIImagePNGRepresentation(image) {
let base64 = data.base64EncodedString(options: [])
let url = "data:application/png;base64," + base64
let html = "<html><head></head><body><h1>Hello World!</h1><img src='\(url)'></body></html>"
webView.loadHTMLString(html, baseURL: URL(fileURLWithPath: ""))
}
}
}
我尝试在Playground中执行此操作，但是无法显示webView，因此这是一个最小的应用程序...
I tried to do this in Playground, but couldn't get the webView to display, so it's a minimal app...
输出:
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