How to disable a RadioGroup until checkbox is checked

Question

I have a radio group which I do not want to user to be able to select any of the buttons until a particular checkbox is selected within my app. If the checkbox is unticked then this disables the radio-group. How do I go about doing this.

Answer 1

The real trick is to loop through all children view (in this case: CheckBox) and call it's setEnabled(boolean)

Something like this should do the trick:

//initialize the controls final RadioGroup rg1 = (RadioGroup)findViewById(R.id.radioGroup1); CheckBox ck1 = (CheckBox)findViewById(R.id.checkBox1);  //set setOnCheckedChangeListener() ck1.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {      @Override     public void onCheckedChanged(CompoundButton checkBox, boolean checked) {         //basically, since we will set enabled state to whatever state the checkbox is         //therefore, we will only have to setEnabled(checked)         for(int i = 0; i < rg1.getChildCount(); i++){             ((RadioButton)rg1.getChildAt(i)).setEnabled(checked);         }     } });  //set default to false for(int i = 0; i < rg1.getChildCount(); i++){     ((RadioButton)rg1.getChildAt(i)).setEnabled(false); }