How to integrate TEST PayU Payment Gateway in android application?
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
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.