In quiz app previous button is not working properly

By: samiks*** On: Mon Nov 27 16:51:38 IST 2017     0 0 0	0
I have created a quiz app by using the xampp sever database where single layout (i.e. xml file) and also single activity is used to retrive all the questions of database. I have included two buttons i.e Previous and Next. Both buttons are working properly in terms of navigation but the problem encountered in scores management of quiz. When i click on next button , it works properly by increment the value of score and finally leads to result page, but when I am click on previous button the options which we already click are erase and we have to again click the options so give me solution to maintain the state of that redio button so that the options which we are selected first are save kindly help me to sort out dis problem...	0