->Create your paytm account using mobile number, emailid(option) and password. -> open this link https://business.paytm.com then go for business signup from right top side menu. -> Go for 'Payment Gateway for Website/App. -> If you want to create LIVE account then you need to enter all given data shown in first form. -> and if you want to create stagging (Testing) account please find 'Developers looking to access Sandbox: Click here' and click on it. -> To Generate Sandbox Credentials add company name,yourname,email id,accept payment on app/web or both select option from given choice and add app url and weburl. -> Select Dev Platform. if selected other then enter Callback URL. -> after successfully register you will get bellow details::
Sandbox Merchant ID?
Website Url = ?
App Url = ?
Sandbox Merchant Key = ?
Channel Id = ?
Industry Type = ?
Dashboard Login Details
Merchant Panel Link = ?
User Name = ?
Password = ?
-> For android paytm we need to add PGSDK_V2.1.jar file in lib folder. -> If You have Auth Certificate then keep it in res/raw folder and create PaytmClientCertificate by password and filename. -> If you have not Certificate file don't worry pass null instead of PaytmClientCertificate object.
Refer above example.
Thank you.