Get the array of RadioButtons in a RadioGroup in Android
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05-12-2019 - |
Pregunta
Is there any way of getting an array (or a collection) of the RadioButton
s in an Android RadioGroup
? I would like to add individual listeners to radio buttons but I don't see any obvious way of iterating over them.
Solución
this should do the trick:
int count = radioGroup.getChildCount();
ArrayList<RadioButton> listOfRadioButtons = new ArrayList<RadioButton>();
for (int i=0;i<count;i++) {
View o = radioGroup.getChildAt(i);
if (o instanceof RadioButton) {
listOfRadioButtons.add((RadioButton)o);
}
}
Log.d(TAG,"you have "+listOfRadioButtons.size()+" radio buttons");
Otros consejos
Why do you need to query the radioGroup? Why cant you directly set your listeners on the RadioButton, you must be able to get a hold of the radioButtons since you are the one who is adding them to the RadioGroup.
Regardless, RadioGroup is simply a special type of LinearLayout, all its children are RadioButtons that you have added. You can loop through all the child views to access the RadioButtons.
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