How to integrate TEST PayU Payment Gateway in andr

Question

I am new in Payment Gateway. Currently, I am working on a mobile app where I need to integrate PayU payment gateway in android app.

So far, I have created a code for TEST url & when I run my app I get below exception:

An error occurred. Sorry, some problem occurred.

Screenshot of mobile app

This is my code:

public class PayMentGateWay extends Activity {
     private ArrayList<String> post_val = new ArrayList<String>();
     private String post_Data="";
     WebView webView ;
     final Activity activity = this;
     private String tag = "PayMentGateWay";
     private String hash,hashSequence;

     String merchant_key="JBZaLc";
        String salt="GQs7yium";
        String action1 ="";
        String base_url="https://test.payu.in";
        int error=0;
        String hashString="";
        Map<String,String> params;
        String txnid ="";

        Handler mHandler = new Handler();


    @SuppressLint("JavascriptInterface")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
         final ProgressDialog progressDialog = new ProgressDialog(activity);
         getWindow().requestFeature(Window.FEATURE_PROGRESS);
        webView = new WebView(this);
        setContentView(webView);

        post_val.add("key");
        post_val.add("JBZaLc");
        post_val.add("txnid");
        post_val.add("5d59dae66618a14f5020");
        post_val.add("amount");
        post_val.add("100.00");
        post_val.add("productinfo");

        post_val.add("{paymentParts:[{name:abc,description:abcd,value:500,isRequired:true,settlementEvent:EmailConfirmation}], paymentIdentifiers:[{field:CompletionDate, value:25/06/2015}]}");
        post_val.add("firstname");
        post_val.add("pqrs");
        post_val.add("email");
        post_val.add("[e-mail]");
        post_val.add("phone");
        post_val.add("xxxxxxxxxx");
        post_val.add("surl");
        post_val.add("https://www.google.com");
        post_val.add("furl");
        post_val.add("https://www.gmail.com");
        post_val.add("hash");
        post_val.add("");
        post_val.add("provider");
        post_val.add("payu_paisa");
        Log.d(tag, "post_val: "+post_val);
        params= new HashMap<String,String>();
        for(int i = 0;i<post_val.size();){
            params.put(post_val.get(i), post_val.get(i+1));

            i+=2;   
        }

        if(empty(params.get("txnid"))){
            Random rand = new Random();
            String rndm = Integer.toString(rand.nextInt())+(System.currentTimeMillis() / 1000L);
            txnid=hashCal("SHA-256",rndm).substring(0,20);
            popup("txnid : " + txnid);
            System.out.println("......txnid...... " + txnid);
        } else {
            txnid=params.get("txnid");
            System.out.println("....else.......txnid...... " + txnid);
        }

            //String udf2 = txnid;
        String txn="abcd";
         hash="";
        String hashSequence = "key|txnid|amount|productinfo|firstname|email|udf1|udf2|udf3|udf4|udf5|udf6|udf7|udf8|udf9|udf10";
        if(empty(params.get("hash")) && params.size()>0) {
            if( empty(params.get("key"))
                || empty(params.get("txnid"))
                || empty(params.get("amount"))
                || empty(params.get("firstname"))
                || empty(params.get("email"))
                || empty(params.get("phone"))
                || empty(params.get("productinfo"))
                || empty(params.get("surl"))
                || empty(params.get("furl"))
                || empty(params.get("service_provider"))

        ) {
                String[] hashVarSeq = hashSequence.split("\\|");
                for (int i = 0; i < hashVarSeq.length; i++) {
                    System.out.println("<<<<<>>>>>>>> " + hashVarSeq[i]);
                }

                for(String part : hashVarSeq)
                {
                    hashString= (empty(params.get(part))) ? hashString.concat("") : hashString.concat(params.get(part));
                    hashString=hashString.concat("|");
                    System.out.println("??????? " + hashString);
                }
                hashString=hashString.concat(salt);


                 hash=hashCal("SHA-512",hashString);
                 System.out.println(hashString + " /////~~~~~~ " + hash);
                action1=base_url.concat("/_payment");
            }
        }
        else if(!empty(params.get("hash")))
        {
            hash=params.get("hash");
            action1=base_url.concat("/_payment");
            System.out.println("!!!!!!!!HASHHHHHHH!!!!!! " + hash);
        }

        webView.setWebViewClient(new WebViewClient(){


            @Override
            public void onReceivedError(WebView view, int errorCode,
                    String description, String failingUrl) {
                // TODO Auto-generated method stub
                System.out.println(">>>>>>>>>>>>>>onReceivedError>>>>>>>>>>>>>>>>>>");
                Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onReceivedSslError(WebView view,
                    SslErrorHandler handler, SslError error) {
                // TODO Auto-generated method stub
                System.out.println(">>>>>>>>>>>>>>onReceivedSslError>>>>>>>>>>>>>>>>>>");
                Toast.makeText(activity, "SslError! " +  error, Toast.LENGTH_SHORT).show();
                 handler.proceed();
            }

            @Override
            public boolean shouldOverrideUrlLoading(WebView view, String url) {
                // TODO Auto-generated method stub
                System.out.println(">>>>>>>>>>>>>>shouldOverrideUrlLoading>>>>>>>>>>>>>>>>>>");
                return super.shouldOverrideUrlLoading(view, url);
            }

            @Override
            public void onPageFinished(WebView view, String url) {
                // TODO Auto-generated method stub
                super.onPageFinished(view, url);
                System.out.println(">>>>>>>>>>>>>>onPageFinished>>>>>>>>>>>>>>>>>>");
            }


        });


        webView.setVisibility(0);
        webView.getSettings().setBuiltInZoomControls(true);
        webView.getSettings().setCacheMode(2);
        webView.getSettings().setDomStorageEnabled(true);
        webView.clearHistory();
        webView.clearCache(true);
        webView.getSettings().setJavaScriptEnabled(true);
        webView.getSettings().setSupportZoom(true);
        webView.getSettings().setUseWideViewPort(false);
        webView.getSettings().setLoadWithOverviewMode(false);

        webView.addJavascriptInterface(new PayUJavaScriptInterface(activity), "PayUMoney");
        Map<String, String> mapParams = new HashMap<String, String>();
        mapParams.put("key",merchant_key);
        mapParams.put("hash",PayMentGateWay.this.hash);
        mapParams.put("txnid",(empty(PayMentGateWay.this.params.get("txnid"))) ? "" : PayMentGateWay.this.params.get("txnid"));
        Log.d(tag, "txnid: "+PayMentGateWay.this.params.get("txnid"));
        mapParams.put("service_provider","payu_paisa");

            mapParams.put("amount",(empty(PayMentGateWay.this.params.get("amount"))) ? "" : PayMentGateWay.this.params.get("amount"));
            mapParams.put("firstname",(empty(PayMentGateWay.this.params.get("firstname"))) ? "" : PayMentGateWay.this.params.get("firstname"));
            mapParams.put("email",(empty(PayMentGateWay.this.params.get("email"))) ? "" : PayMentGateWay.this.params.get("email"));
            mapParams.put("phone",(empty(PayMentGateWay.this.params.get("phone"))) ? "" : PayMentGateWay.this.params.get("phone"));

            mapParams.put("productinfo",(empty(PayMentGateWay.this.params.get("productinfo"))) ? "" : PayMentGateWay.this.params.get("productinfo"));
            mapParams.put("surl",(empty(PayMentGateWay.this.params.get("surl"))) ? "" : PayMentGateWay.this.params.get("surl"));
            mapParams.put("furl",(empty(PayMentGateWay.this.params.get("furl"))) ? "" : PayMentGateWay.this.params.get("furl"));
            mapParams.put("lastname",(empty(PayMentGateWay.this.params.get("lastname"))) ? "" : PayMentGateWay.this.params.get("lastname"));

            mapParams.put("address1",(empty(PayMentGateWay.this.params.get("address1"))) ? "" : PayMentGateWay.this.params.get("address1"));
            mapParams.put("address2",(empty(PayMentGateWay.this.params.get("address2"))) ? "" : PayMentGateWay.this.params.get("address2"));
            mapParams.put("city",(empty(PayMentGateWay.this.params.get("city"))) ? "" : PayMentGateWay.this.params.get("city"));
            mapParams.put("state",(empty(PayMentGateWay.this.params.get("state"))) ? "" : PayMentGateWay.this.params.get("state"));

            mapParams.put("country",(empty(PayMentGateWay.this.params.get("country"))) ? "" : PayMentGateWay.this.params.get("country"));
            mapParams.put("zipcode",(empty(PayMentGateWay.this.params.get("zipcode"))) ? "" : PayMentGateWay.this.params.get("zipcode"));
            mapParams.put("udf1",(empty(PayMentGateWay.this.params.get("udf1"))) ? "" : PayMentGateWay.this.params.get("udf1"));
            mapParams.put("udf2",(empty(PayMentGateWay.this.params.get("udf2"))) ? "" : PayMentGateWay.this.params.get("udf2"));

            mapParams.put("udf3",(empty(PayMentGateWay.this.params.get("udf3"))) ? "" : PayMentGateWay.this.params.get("udf3"));
            mapParams.put("udf4",(empty(PayMentGateWay.this.params.get("udf4"))) ? "" : PayMentGateWay.this.params.get("udf4"));
            mapParams.put("udf5",(empty(PayMentGateWay.this.params.get("udf5"))) ? "" : PayMentGateWay.this.params.get("udf5"));
            mapParams.put("pg",(empty(PayMentGateWay.this.params.get("pg"))) ? "" : PayMentGateWay.this.params.get("pg"));
            webview_ClientPost(webView, action1, mapParams.entrySet());

    }
    public class PayUJavaScriptInterface {
        Context mContext;

        /** Instantiate the interface and set the context */
        PayUJavaScriptInterface(Context c) {
            mContext = c;
        }


        public void success(long id, final String paymentId) {

        mHandler.post(new Runnable() {

        public void run() {

        mHandler = null;

        Intent intent = new Intent(PayMentGateWay.this, MainActivity.class);

        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP |Intent.FLAG_ACTIVITY_SINGLE_TOP);

        intent.putExtra("result", "success");

        intent.putExtra("paymentId", paymentId);

        startActivity(intent);

        finish();

        }

        });

        }

    }
     public void webview_ClientPost(WebView webView, String url, Collection< Map.Entry<String, String>> postData){
            StringBuilder sb = new StringBuilder();

            sb.append("<html><head></head>");
            sb.append("<body onload='form1.submit()'>");
            sb.append(String.format("<form id='form1' action='%s' method='%s'>", url, "post"));
            for (Map.Entry<String, String> item : postData) {
                sb.append(String.format("<input name='%s' type='hidden' value='%s' />", item.getKey(), item.getValue()));
            }
            sb.append("</form></body></html>");
            Log.d(tag, "webview_ClientPost called");
           webView.loadData(sb.toString(), "text/html", "utf-8");
     }


     public void success(long id, final String paymentId) {

     mHandler.post(new Runnable() {

     public void run() {

     mHandler = null;

     Intent intent = new Intent(PayMentGateWay.this, MainActivity.class);

     intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP |Intent.FLAG_ACTIVITY_SINGLE_TOP);

     intent.putExtra(Constants.ACCOUNT_NAME, "success");

     intent.putExtra(Constants._ID, paymentId);

     startActivity(intent);

     finish();

     }

     });

     }


    public boolean empty(String s)
    {
        if(s== null || s.trim().equals(""))
            return true;
        else
            return false;
    }

    public String hashCal(String type,String str){
        byte[] hashseq=str.getBytes();
        StringBuffer hexString = new StringBuffer();
        try{
        MessageDigest algorithm = MessageDigest.getInstance(type);
        algorithm.reset();
        algorithm.update(hashseq);
        byte messageDigest[] = algorithm.digest();



        for (int i=0;i<messageDigest.length;i++) {
            String hex=Integer.toHexString(0xFF & messageDigest[i]);
            if(hex.length()==1) hexString.append("0");
            hexString.append(hex);
        }

        }catch(NoSuchAlgorithmException nsae){ }

        return hexString.toString();


    }

    public void popup(String msg) {
        Toast.makeText(PayMentGateWay.this, "" + msg, Toast.LENGTH_LONG).show();
    }


}

I really don't know what is the exact problem. Why I am not able to see the next page or am I missing something?

Answer 1

Download demo project from here github project link

and change

int env = PayuConstants.STAGING_ENV;

this will do for test mode

Answer 2

It was happened due to technical error at PayUMoney. Needed to contact support team to issue new Merchant ID & Key.

Answer 3

"Sorry, some problem occurred" this error comes up when you don't have a valid Merchant key and Salt key. In this case you need to contact PayU Money customer care support team for valid Merchant and Salt key. Hope this will help you.

Answer 4

I was facing the same issue and am feed up with this integration's.

But after contacting with payumoney.com sport team, they told me that the integration kit showing in the downloading kit is not active, that is the key(JBZaLc) and salt(GQs7yium) its only a dummy data's. So we need to send your company details including the bank details, then they verify your company details, then they will provide us the new integration kit. With that kit we can do the testing.

Answer 5

PayUmoney merchant dashboard - at right top you will see "Live Mode" just toggle it to make is "Test Mode". The Android app integration of PayUmoney is simple. Add these dependency in gradle file

    implementation 'com.payumoney.core:payumoney-sdk:7.4.4'
    implementation  'com.payumoney.sdkui:plug-n-play:1.4.4'

You can find PHP checksum Hash files and android source code in this reference link.

Answer 6

They have not activated the test account.