WebView加载网页完成后跳转到about:blank

public boolean shouldOverrideUrlLoading(WebView view, String url) {
  view.loadUrl(url);
  return true;
}

更改为

public boolean shouldOverrideUrlLoading(WebView view, String url) {
  return super.shouldOverrideUrlLoading(view, url);
}

参考资料https://github.com/selendroid/selendroid/issues/212