Android WebViewでファイルのダウンロード

gistfile1.java

       mWebView.setDownloadListener(new DownloadListener() {
            @Override
            public void onDownloadStart(String url, String userAgent,
                    String contentDisposition, String mimetype, long contentLength) {

                Intent intent = new Intent(Intent.ACTION_VIEW);
                intent.setType(mimetype);
                intent.setData(Uri.parse(url));
                startActivity(intent);
            }
        });