android webview增加下载附件功能

 webView.setDownloadListener(new DownloadListener() {

            public void onDownloadStart(String url, String userAgent,
                    String contentDisposition, String mimetype,
                    long contentLength) {
                // handle download, here we use brower to download, also you can try other approach.
                Uri uri = Uri.parse(url);
                Intent intent = new Intent(Intent.ACTION_VIEW, uri);
                startActivity(intent);
            }
        });