是不是又被产品为难了呢，我来帮你解决，如果帮到了你，点个赞哈

  String url = String.format(
                "https://www.pinterest.com/pin/create/button/?url=%s&media=%s&description=%s",
                urlEncode(shareUrl), urlEncode(mediaUrl), urlEncode(content));
        Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
        if (!TextUtils.isEmpty(packageName) && DeviceUtils.isAppInstalled(context, packageName)) {
            intent.setPackage(packageName);
        }
        context.startActivity(intent);


 public static String urlEncode(String s) {
        try {
            return URLEncoder.encode(s, "UTF-8");
        } catch (UnsupportedEncodingException e) {
            return "";
        }
    }