//覆寫shouldInterceptRequest诬乞，通過url去匹配本地資源，用本地文件替換線上資源，達(dá)到攔截替換目的
private class MyWebViewClient(private val context: Context) : WebViewClient() {
override fun shouldInterceptRequest(
view: WebView?,
request: WebResourceRequest?
): WebResourceResponse? {
val webResourceResponse = shouldInterceptRequest(context, request?.url)
if (webResourceResponse != null) {
return webResourceResponse
}
return super.shouldInterceptRequest(view, request)
}
}
//shouldInterceptRequest方法偽代碼
if (url.isEmpty() || !url.startsWith("http")) {
return null
}
//根據(jù)請求url獲取本地文件用來替換線上資源
val targetFile = getFileByUrl(url)
//匹配資源類型
val mimeType = when {
relativePath.contains(".css") -> "text/css"
relativePath.contains(".js") -> "application/x-javascript"
relativePath.contains(".js") -> "application/x-javascript"
//圖片類型
relativePath.contains(".jpg") || relativePath.contains(".gif") ||
relativePath.contains(".png") || relativePath.contains(".jpeg") -> "image/*"
//pdf
relativePath.endsWith(".pdf") -> "application/pdf"
//word文檔
relativePath.endsWith(".doc") || relativePath.endsWith(".docx") -> "application/msword"
relativePath.endsWith(".ppt") -> "application/pdf"
//表格文檔
relativePath.endsWith(".xlsx") || relativePath.endsWith(".xla") || relativePath.endsWith(".xlc") || relativePath.endsWith(
".xlm"
) || relativePath.endsWith(".xls") || relativePath.endsWith(".xlt") || relativePath.endsWith(
".xlw"
) -> "application/vnd.ms-excel"
else -> "text/html"
}
val ins = FileInputStream(targetFile)
return WebResourceResponse(mimeType, "utf-8", ins)
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