每当我试图从android web视图中获取加载时间时，它都会给出错误的数字

WebView webView = new WebView(context);
webView.loadUrl("https://www.example.com");

webView.setWebViewClient(new WebViewClient() {
    private long startTime;

    @Override
    public void onPageStarted(WebView view, String url, Bitmap favicon) {
        super.onPageStarted(view, url, favicon);
        startTime = System.currentTimeMillis();
    }

    @Override
    public void onPageFinished(WebView view, String url) {
        super.onPageFinished(view, url);
        long endTime = System.currentTimeMillis();
        long loadTime = endTime - startTime;
        // 在这里处理加载时间，例如打印日志或发送给服务器
        Log.d("WebView", "网页加载时间：" + loadTime + "ms");
    }
});