Selecting one RadioButton value and scrolling back removing the selected one in RecyclerView

Question

In my application am displaying 20 multiple choice questions with the help of RecyclerView.

If I change the value of first RadioGroup and s

Answer 1

This problem occurs because of a bug in either RecyclerView or somewhere in the Android SDK. Anyway, I took the advice from another SO question - onCheckedChanged called automatically.

For RadioGroup, it will be a little different. There are two ways to go about. I recommend 1st one since it is plug-n-play.

1. set OnCheckedChangeListener on RadioGroup:

   mRadioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
       @Override
       public void onCheckedChanged(RadioGroup group, int checkedId) {
           if(checkedId == -1) {
               Log.v("onCheck", "Android bug since RadioButton doesn't get unchecked normally!");
           }
           else {
               Log.v("onCheck", "Valid click. By user");
               mMyListObjectArr[position].setChecked(checkedId);
           }
       }
   });
   

2. or set onCheckedChangeListener on all RadioButtons inside the RadioGroup:

   CompoundButton.OnCheckedChangeListener onCheckedChangeListener = new CompoundButton.OnCheckedChangeListener() {
       @Override
       public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
           if(buttonView.isPressed()) {
               Log.v("onCheck", position + ", valid click by user");
               mMyListObjectArr[position].setChecked(buttonView.getId());
           }
           else {
               Log.v("onCheck", "Android bug");
           }
       }
   };
   mRadioButton1.setOnCheckedChangeListener(onCheckedChangeListener);
   mRadioButton2.setOnCheckedChangeListener(onCheckedChangeListener);