How to integrate TEST PayU Payment Gateway in android application?

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("[email protected]");
        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

I think your code is okay, I am also doing same and got to know from payu that test merchant_key and salt is not working currently. Try for production mode.

If you want to load data from server use(postUrl):

 post_Data = "hash="+PayMentGateWay.this.hash+"&key="+merchant_key+"&txnid="+PayMentGateWay.this.params.get("txnid")+"&amount="+PayMentGateWay.this.params.get("amount")+
                "&productinfo="+PayMentGateWay.this.params.get("productinfo")+"&firstname="+PayMentGateWay.this.params.get("firstname")+
                "&email="+PayMentGateWay.this.params.get("email")+"&phone="+PayMentGateWay.this.params.get("phone")+
                "&surl="+PayMentGateWay.this.params.get("surl")+"&furl="+ PayMentGateWay.this.params.get("furl")+
                "&service_provider="+ "payu_paisa";

 webView.postUrl("https://secure.payu.in/_payment", EncodingUtils.getBytes(post_Data, "base64"));

I hope this help.

Answer 2

I have successfully implemented payment Gateway.

Images used in drawable for progress dialog

PayUMoneyActivity

public class PayUMoneyActivity extends AppCompatActivity {

WebView webView;
Context activity;
/**
 * Order Id
 * To Request for Updating Payment Status if Payment Successfully Done
 */
int mId;
private String mMerchantKey = "JBZaLc";//For merchant and salt key you need to contact payu money tech support otherwise you get error
private String mSalt = "GQs7yium";//copy and paste works fine 
private String mBaseURL = "https://test.payu.in";
private String mAction = ""; // For Final URL
private String mTXNId; // This will create below randomly
private String mHash; // This will create below randomly
private String mProductInfo; // From Previous Activity
private String mFirstName; // From Previous Activity
private String mEmailId; // From Previous Activity
private double mAmount; // From Previous Activity
private String mPhone; // From Previous Activity
private String mServiceProvider = "payu_paisa";
private String mSuccessUrl = "https://payu.herokuapp.com/success";
private String mFailedUrl = "https://payu.herokuapp.com/failure";


boolean isFromOrder;
/**
 * Handler os handler
 */
Handler mHandler = new Handler();
private String TAG = "User info";
private ProgressDialog progressDialog;


/**
 * @param savedInstanceState
 */
@SuppressLint({"AddJavascriptInterface", "SetJavaScriptEnabled", "JavascriptInterface"})
@Override
protected void onCreate(Bundle savedInstanceState) {
    // getWindow().requestFeature(Window.FEATURE_PROGRESS);
    super.onCreate(savedInstanceState);
   /**
     * Setting WebView to Screen
     */
    setContentView(R.layout.activity_payumoney);
    /**
     * start processing Payu dialog
     */
    progressBarVisibilityPayuChrome(View.VISIBLE);

    /**
     * Creating WebView
     */
    webView = (WebView) findViewById(R.id.payumoney_webview);

    /**
     * Context Variable
     */
    activity = getApplicationContext();
    /**
     * Getting Intent Variables...
     */
    Bundle bundle = getIntent().getExtras();
    if (bundle != null) {
        mFirstName = bundle.getString("name");
        mEmailId = bundle.getString("email");
        mProductInfo = bundle.getString("productInfo");
        mAmount = Double.parseDouble(bundle.getString("amount"));//in my case amount getting as String so i parse it double
        mPhone = bundle.getString("phone");
        mId = bundle.getInt("id");
        isFromOrder = bundle.getBoolean("isFromOrder");

        Log.i(TAG, "" + mFirstName + " : " + mEmailId + " : " + mAmount + " : " + mPhone);

        /**
         * Creating Transaction Id
         */
        Random rand = new Random();
        String randomString = Integer.toString(rand.nextInt()) + (System.currentTimeMillis() / 1000L);
        mTXNId = hashCal("SHA-256", randomString).substring(0, 20);

        mAmount = new BigDecimal(mAmount).setScale(0, RoundingMode.UP).intValue();

        /**
         * Creating Hash Key
         */
        mHash = hashCal("SHA-512", mMerchantKey + "|" +
                mTXNId + "|" +
                mAmount + "|" +
                mProductInfo + "|" +
                mFirstName + "|" +
                mEmailId + "|||||||||||" +
                mSalt);

        /**
         * Final Action URL...
         */
        mAction = mBaseURL.concat("/_payment");

        /**
         * WebView Client
         */
        webView.setWebViewClient(new WebViewClient() {

            @Override
            public void onReceivedError(WebView view, WebResourceRequest request, WebResourceError error) {
                super.onReceivedError(view, request, error);
                Toast.makeText(activity, "Oh no! " + error, Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onReceivedSslError(WebView view,
                                           SslErrorHandler handler, SslError error) {
                Toast.makeText(activity, "SSL Error! " + error, Toast.LENGTH_SHORT).show();
                handler.proceed();
            }

            @Override
            public boolean shouldOverrideUrlLoading(WebView view, String url) {
                return super.shouldOverrideUrlLoading(view, url);
            }

            @Override
            public void onPageStarted(WebView view, String url, Bitmap favicon) {
                super.onPageStarted(view, url, favicon);
            }

            @Override
            public void onPageFinished(WebView view, String url) {

                if (url.equals(mSuccessUrl)) {

                    Intent intent = new Intent(PayUMoneyActivity.this, PaymentStatusActivity.class);
                    intent.putExtra("status", true);
                    intent.putExtra("transaction_id", mTXNId);
                    intent.putExtra("id", mId);
                    intent.putExtra("isFromOrder", isFromOrder);
                    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                    startActivity(intent);
                } else if (url.equals(mFailedUrl)) {
                    Intent intent = new Intent(PayUMoneyActivity.this, PaymentStatusActivity.class);
                    intent.putExtra("status", false);
                    intent.putExtra("transaction_id", mTXNId);
                    intent.putExtra("id", mId);
                    intent.putExtra("isFromOrder", isFromOrder);
                    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                    startActivity(intent);
                }
                /**
                 * wait 10 seconds to dismiss payu money processing dialog in my case
                 */
                new Handler().postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        progressBarVisibilityPayuChrome(View.GONE);
                    }
                }, 10000);

                super.onPageFinished(view, url);
            }
        });

        webView.setVisibility(View.VISIBLE);
        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(PayUMoneyActivity.this), "PayUMoney");

        /**
         * Mapping Compulsory Key Value Pairs
         */
        Map<String, String> mapParams = new HashMap<>();
        mapParams.put("key", mMerchantKey);
        mapParams.put("txnid", mTXNId);
        mapParams.put("amount", String.valueOf(mAmount));
        mapParams.put("productinfo", mProductInfo);
        mapParams.put("firstname", mFirstName);
        mapParams.put("email", mEmailId);
        mapParams.put("phone", mPhone);
        mapParams.put("surl", mSuccessUrl);
        mapParams.put("furl", mFailedUrl);
        mapParams.put("hash", mHash);
        mapParams.put("service_provider", mServiceProvider);

        webViewClientPost(webView, mAction, mapParams.entrySet());

    } else {
        Toast.makeText(activity, "Something went wrong, Try again.", Toast.LENGTH_LONG).show();
    }
}

/**
 * Posting Data on PayUMoney Site with Form
 *
 * @param webView
 * @param url
 * @param postData
 */
public void webViewClientPost(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", "webViewClientPost called: " + sb.toString());
    webView.loadData(sb.toString(), "text/html", "utf-8");
}


/**
 * Hash Key Calculation
 *
 * @param type
 * @param str
 * @return
 */
public String hashCal(String type, String str) {
    byte[] hashSequence = str.getBytes();
    StringBuffer hexString = new StringBuffer();
    try {
        MessageDigest algorithm = MessageDigest.getInstance(type);
        algorithm.reset();
        algorithm.update(hashSequence);
        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();
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    if (item.getItemId() == android.R.id.home) {
        onPressingBack();
    }
    return super.onOptionsItemSelected(item);
}

@Override
public void onBackPressed() {
    onPressingBack();
}

/**
 * On Pressing Back
 * Giving Alert...
 */
private void onPressingBack() {
    final Intent intent;
    if (isFromOrder)
        intent = new Intent(PayUMoneyActivity.this, ProductInCartList.class);
    else
        intent = new Intent(PayUMoneyActivity.this, MainActivity.class);
    intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    AlertDialog.Builder alertDialog = new AlertDialog.Builder(PayUMoneyActivity.this);
    alertDialog.setTitle("Warning");
    alertDialog.setMessage("Do you cancel this transaction?");
    alertDialog.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int which) {
            finish();
            startActivity(intent);
        }
    });
    alertDialog.setNegativeButton("No", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int which) {
            dialog.dismiss();
        }
    });
    alertDialog.show();
}

public class PayUJavaScriptInterface {
    Context mContext;

    PayUJavaScriptInterface(Context c) {
        mContext = c;
    }

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

        mHandler.post(new Runnable() {

            public void run() {

                mHandler = null;
                Toast.makeText(PayUMoneyActivity.this, "Payment Successfully.", Toast.LENGTH_SHORT).show();
                Intent intent = new Intent(PayUMoneyActivity.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 progressBarVisibilityPayuChrome(int visibility) {
    if (getApplicationContext() != null && !isFinishing()) {
        if (visibility == View.GONE || visibility == View.INVISIBLE) {
            if (progressDialog != null && progressDialog.isShowing())
                progressDialog.dismiss();
        } else if (progressDialog == null || !progressDialog.isShowing()) {
            progressDialog = showProgress(this);
        }
    }
}

public ProgressDialog showProgress(Context context) {
    if (getApplicationContext() != null && !isFinishing()) {
        LayoutInflater mInflater = LayoutInflater.from(context);
        final Drawable[] drawables = {getResources().getDrawable(R.drawable.l_icon1),
                getResources().getDrawable(R.drawable.l_icon2),
                getResources().getDrawable(R.drawable.l_icon3),
                getResources().getDrawable(R.drawable.l_icon4)
        };

        View layout = mInflater.inflate(R.layout.prog_dialog, null);
        final ImageView imageView;
        imageView = (ImageView) layout.findViewById(R.id.imageView);
        ProgressDialog progDialog = new ProgressDialog(context, R.style.ProgressDialog);

        final Timer timer = new Timer();
        timer.scheduleAtFixedRate(new TimerTask() {
            int i = -1;

            @Override
            synchronized public void run() {
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        i++;
                        if (i >= drawables.length) {
                            i = 0;
                        }
                        imageView.setImageBitmap(null);
                        imageView.destroyDrawingCache();
                        imageView.refreshDrawableState();
                        imageView.setImageDrawable(drawables[i]);
                    }
                });

            }
        }, 0, 500);

        progDialog.setOnDismissListener(new DialogInterface.OnDismissListener() {
            @Override
            public void onDismiss(DialogInterface dialog) {
                timer.cancel();
            }
        });
        progDialog.show();
        progDialog.setContentView(layout);
        progDialog.setCancelable(true);
        progDialog.setCanceledOnTouchOutside(false);
        return progDialog;
    }
    return null;
}
}

prog_dialog.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="5dp">

<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:layout_marginLeft="30dp"
    android:layout_marginRight="30dp"
    android:background="@drawable/shape_progress"
    android:gravity="center_horizontal"
    android:orientation="vertical">

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="90dp"
        android:layout_height="90dp"
        android:paddingTop="10dp"
        android:scaleType="centerInside"
        android:src="@drawable/l_icon1" />

    <TextView
        android:id="@+id/dialog_title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:paddingTop="30dp"
        android:text="Processing Your Request"
        android:textSize="20dp"
        android:textStyle="normal"/>

    <TextView
        android:id="@+id/dialog_desc"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:paddingTop="10dp"
        android:text="Please Wait..."
        android:textSize="15dp"
        android:textStyle="italic"/>
</LinearLayout>
</RelativeLayout>

activity_payumoney.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/r_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_horizontal">

<FrameLayout
    android:id="@+id/parent"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:visibility="gone" />

<WebView
    android:id="@+id/payumoney_webview"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

<LinearLayout
    android:id="@+id/trans_overlay"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/background_drawable"
    android:orientation="horizontal"/>
</RelativeLayout>

background_drawable.xml

<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#10000000"></solid>
<corners android:radius="0dp" />

Answer 3

They have not activated the test account.

Answer 4

"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.