How can I uncheck or reset the radio button?
android, radio-button
Solution
I think the problem is with btn_practicerg object i.e if you are creating new RadioGroup object everytime you display a new question then you have to execute RadioGroup.clearCheck() on new btn_practicerg object instead of old one that I think you are doing currently.
Even better:
btn_practice1.setText(answ1.get(0));
btn_practice2.setText(answ1.get(1));
btn_practice3.setText(answ1.get(2));
btn_practice4.setText(answ1.get(3));
btn_practice1.setChecked(false);
btn_practice2.setChecked(false);
btn_practice3.setChecked(false);
btn_practice4.setChecked(false);
to uncheck all the buttons in the beginning. I hope this will solve your problem.
Problem
I am developing an quiz based app. There will be 1 question and 4 option (radio buttons) when user opens this app radio button will be unchecked but the problem comes when the user answers 1 quest and when he goes for next quest radio button will be checked. I want to uncheck/reset the radio buttons for every question. How can I do it? ``` answ1=new ArrayList<String>(new ArrayList<String>(answ1)); btn_practice1.setText(answ1.get(0)); btn_practice2.setText(answ1.get(1)); btn_practice3.setText(answ1.get(2)); btn_practice4.setText(answ1.get(3)); btn_practicerg.setOnCheckedChangeListener(new OnCheckedChangeListener(){ @Override public void onCheckedChanged(RadioGroup group, int checkedId) { RadioButton radioButton = (RadioButton)group. findViewById(checkedId); //line 262 String temp = radioButton.getText().toString(); switch(btn_practicerg.getCheckedRadioButtonId()){ case R.id.RB1: if (btn_practice1.isChecked()){ btn_practice2.setChecked(false); btn_practice3.setChecked(false); btn_practice4.setChecked(false); } break; case R.id.RB2: if (btn_practice2.isChecked()){ btn_practice1.setChecked(false); btn_practice3.setChecked(false); btn_practice4.setChecked(false); } break; case R.id.RB3: if (btn_practice3.isChecked()){ btn_practice1.setChecked(false); btn_practice2.setChecked(false); btn_practice4.setChecked(false); } break; case R.id.RB4: if (btn_practice4.isChecked()){ btn_practice1.setChecked(false); btn_practice2.setChecked(false); btn_practice3.setChecked(false); } break; default: btn_practice1.setChecked(false); btn_practice2.setChecked(false); btn_practice3.setChecked(false); btn_practice4.setChecked(false); } ImageView nextBtn = (ImageView) findViewById(R.id.nxt_btn); nextBtn.setOnClickListener(new Button.OnClickListener(){ public void onClick(View v){ btn_practicerg.clearCheck(); //line 355 } }); ``` Logcat ``` E/AndroidRuntime(729):at com.example.TEENEINSTIEN.Question$LoadQuestions$2.onCheckedChanged(Question.java:262) E/AndroidRuntime(729):at android.widget.RadioGroup.setCheckedId(RadioGroup.java:172) E/AndroidRuntime(729):at android.widget.RadioGroup.check(RadioGroup.java:166) E/AndroidRuntime(729):at android.widget.RadioGroup.clearCheck(RadioGroup.java:205) E/AndroidRuntime(729):at com.example.TEENEINSTIEN.Question$LoadQuestions$3.onClick(Question.java:355) E/AndroidRuntime(729):at android.view.View.performClick(View.java:2485) E/AndroidRuntime(729):at android.view.View$PerformClick.run(View.java:9080) ``` I try like this, but I can't uncheck..