[android help] How to hold the selected value in the radio button?

I'M doing quiz app. I have set 50 questions and each question contains 4 options(radio group) with pervious and next button. What i need is when select the answer and goes for next question and again he comes to previous question that time what he select perviously that answer should be in selected state. But user selected value i getText() How to implement this ? Any one help me.. Thanks in advance.. ImageView previousbtn1 = (ImageView) findViewById(R.id.prv_btn); previousbtn1.setOnClickListener(new Button.OnClickListener(){ public void onClick(View v){ if (j < 1) { Toast.makeText(Question.this, "First Question",Toast.LENGTH_SHORT).show(); } else { --j; --num; --m; TextView txtque = (TextView) findViewById(R.id.que_txt); txtque.setText("Q" + num + ")" + ques1.get(j)); --k; btn_practice1.setText(answ1.get((k*4)+0)); btn_practice2.setText(answ1.get((k*4)+1)); btn_practice3.setText(answ1.get((k*4)+2)); btn_practice4.setText(answ1.get((k*4)+3)); } } }); asked 1 min ago

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