在asset文件打开本地网页WebView

class WebUtils{
    companion object {
        fun Uri(web : WebView?,s: String?) {
            web!!.loadUrl(s!!)
            web!!.webViewClient = WebViewClient()
            web!!.settings.javaScriptEnabled = true
            web!!.settings.javaScriptCanOpenWindowsAutomatically = true
            web!!.settings.useWideViewPort = true
            web!!.settings.loadWithOverviewMode = true
            web!!.settings.allowFileAccess = true
            web!!.settings.defaultTextEncodingName = "utf-8"
            web!!.settings.setSupportZoom(true)
            web!!.settings.builtInZoomControls = true
            web!!.settings.displayZoomControls = false
            web!!.settings.cacheMode = WebSettings.LOAD_DEFAULT
            web!!.settings.mediaPlaybackRequiresUserGesture = false
        }
    }
}

在asset文件打开本地网页

class MainActivity(){

WebUtils.Uri(frag.web,"file:///android_asset/Rain/DMY.html")

}