how to finish actvity once response redirect to success URL in Payu paymentgetway with android

Question

public class PayUActvity extends AppCompatActivity {
    WebView webView;

    String merchant_key = "i4auSw";
    String salt = "IW510xtG";
    String action1 = "";
    String base_url = "https://test.payu.in";
    String txnid = "TXN8367286482920";
    String amount = "1000";
    String productInfo = "";
    String frstName;
    String emailId;
    private String SUCCESS_URL = "https://dl.dropboxusercontent.com/s/dtnvwz5p4uymjvg/success.html";
    private String FAILED_URL = "https://dl.dropboxusercontent.com/s/z69y7fupciqzr7x/furlithParams.html";
    private String phone;
    private String serviceProvider = "payu_paisa";
    private String hash = "";
    Handler mHandler = new Handler();
    MyDatabaseHelper dbhhelper;
    String ID;
    String emailadress[];
    String mobilenumber[];


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
//        getWindow().requestFeature(Window.FEATURE_PROGRESS);
        webView = new WebView(this);
        setContentView(webView);
        dbhhelper = new MyDatabaseHelper(PayUActvity.this);
        SharedPreferences prefs = getSharedPreferences(
                AppConstants.LOGIN_PREFS, Context.MODE_PRIVATE);

        String coupanvalue = prefs.getString(AppConstants.COUPAN_Exit, "");
        if (coupanvalue.equals("coupanexist"))

        {
            Bundle bundle = getIntent().getExtras();
            amount = bundle.getString("finaltotatalamount");

            SharedPreferences prefs1 = getSharedPreferences(
                    AppConstants.COUPAN_Exit, Context.MODE_PRIVATE);
            SharedPreferences.Editor editor = prefs1.edit();
            editor.clear();
            editor.commit();

        } else {
            Bundle bundle = getIntent().getExtras();
            amount = bundle.getString("totalpaybleamount");
        }

        try {
            dbhhelper.open();
            ID = prefs.getString("Member_id", "");
            frstName = prefs.getString("username", "");
            mobilenumber = dbhhelper.userMobilennumber(ID);
            emailadress = dbhhelper.useremailadress(ID);
            phone = mobilenumber[0];
            emailId = emailadress[0];

        } catch (NullPointerException e) {
            e.printStackTrace();

        }

        JSONObject productInfoObj = new JSONObject();
        JSONArray productPartsArr = new JSONArray();
        JSONObject productPartsObj1 = new JSONObject();
        JSONObject paymentIdenfierParent = new JSONObject();
        JSONArray paymentIdentifiersArr = new JSONArray();
        JSONObject paymentPartsObj1 = new JSONObject();
        JSONObject paymentPartsObj2 = new JSONObject();
        try {
            // Payment Parts
            productPartsObj1.put("name", "abc");
            productPartsObj1.put("description", "abcd");
            productPartsObj1.put("value", "1000");
            productPartsObj1.put("isRequired", "true");
            productPartsObj1.put("settlementEvent", "EmailConfirmation");
            productPartsArr.put(productPartsObj1);
            productInfoObj.put("paymentParts", productPartsArr);
            paymentPartsObj1.put("field", "CompletionDate");
            paymentPartsObj1.put("value", "31/10/2012");
            paymentIdentifiersArr.put(paymentPartsObj1);
            paymentPartsObj2.put("field", "TxnId");
            paymentPartsObj2.put("value", txnid);
            paymentIdentifiersArr.put(paymentPartsObj2);
            paymentIdenfierParent.put("paymentIdentifiers",
                    paymentIdentifiersArr);
            productInfoObj.put("", paymentIdenfierParent);
        } catch (JSONException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        productInfo = productInfoObj.toString();
        Log.e("TAG", productInfoObj.toString());
        Random rand = new Random();
        String rndm = Integer.toString(rand.nextInt())
                + (System.currentTimeMillis() / 1000L);
        txnid = hashCal("SHA-256", rndm).substring(0, 20);
        hash = hashCal("SHA-512", merchant_key + "|" + txnid + "|" + amount
                + "|" + productInfo + "|" + frstName + "|" + emailId
                + "|||||||||||" + salt);

        action1 = base_url.concat("/_payment");

        webView.setWebViewClient(new WebViewClient() {

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

            @Override
            public void onReceivedSslError(WebView view,
                                           SslErrorHandler handler, SslError error) {
                // TODO Auto-generated method stub

            }

            @Override
            public boolean shouldOverrideUrlLoading(WebView view, String url) {
//                Toast.makeText(PayUActvity.this, "Page Started! " + url,
//                        Toast.LENGTH_SHORT).show();
                if (url.equals(SUCCESS_URL)) {
                    Toast.makeText(PayUActvity.this, "Success! ",
                            Toast.LENGTH_SHORT).show();
                    SharedPreferences prefs = getSharedPreferences(
                            AppConstants.PAYMENT_SUCESS, Context.MODE_PRIVATE);


                    SharedPreferences.Editor editor = prefs.edit();
                    editor.putString(AppConstants.PAYMENT_SUCESS, "1");
                    editor.commit();
                    finish();
                } else {


                }
                return super.shouldOverrideUrlLoading(view, url);
            }

            //
            @Override
            public void onPageFinished(WebView view, String url) {
                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(PayUActvity.this),
                "PayUMoney");
        Map<String, String> mapParams = new HashMap<String, String>();
        mapParams.put("key", merchant_key);
        mapParams.put("hash", hash);
        mapParams.put("txnid", txnid);
        mapParams.put("service_provider", "payu_paisa");
        mapParams.put("amount", amount);
        mapParams.put("firstname", frstName);
        mapParams.put("email", emailId);
        mapParams.put("phone", phone);
        mapParams.put("productinfo", productInfo);
        mapParams.put("surl", SUCCESS_URL);
        mapParams.put("furl", FAILED_URL);
          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;

                }
            });
        }
    }

    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 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();

    }

}

this is my PayuPayment getaway integration with android i am able to doing payment and after payment successfully in redirect to success URL while i want to finish Activity and go Back to Previous Activity with Save shared value with 1 please help me each time it redirect to success URl .

Answer 1

Because you are have not override onPageStarted Method, You can try this way,

@Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
if (url.equals(SUCCESS_URL)) {
Toast.makeText(PayUActvity.this, "Success! ",
Toast.LENGTH_SHORT).show();
SharedPreferences prefs = getSharedPreferences(
AppConstants.PAYMENT_SUCESS, Context.MODE_PRIVATE);
SharedPreferences.Editor editor = prefs.edit();
editor.putString(AppConstants.PAYMENT_SUCESS, "1");
editor.commit();
finish();
} else {
Toast.makeText(PayUActvity.this, "Something Wrong! ",
Toast.LENGTH_SHORT).show();
}
}

Answer 2

Override onPageStarted function in your WebViewClient and compare the success url with the url contained in onPageStarted. If both URL are same, launch any activity whatever you want and close this activity.

Update: Try something like below code:

@Override
        public void onPageStarted(WebView view, String url, Bitmap favicon) {
            super.onPageStarted(view, url, favicon);
            if (url.equals(SUCCESS_URL) {
                // finish activity here
            } else {
                // handle other urls here.
            }
        }