修改 Cocos2dxWebView，在shouldOverrideUrlLoading 裡新增

 try {
        if(urlString.startsWith("weixin://") || urlString.startsWith("alipays://") ||
        		urlString.startsWith("mqqapi://") || urlString.startsWith("alipayqr://")
           //其他自定義的scheme
        ) {
            Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(urlString));
            Cocos2dxHelper.getActivity().startActivity(intent);  
            return true;
        }else if (urlString.startsWith("intent://platformapi/startapp"))
        {
        	 Intent intent = Intent.parseUri(urlString, Intent.URI_INTENT_SCHEME);
        	 intent.addCategory("android.intent.category.BROWSABLE");
        	 intent.setComponent(null);
             Cocos2dxHelper.getActivity().startActivity(intent);  
        }
} catch (Exception e) { //防止crash (如果手機上沒有安裝處理某個scheme開頭的url的APP, 會導致crash)
                return false;
}