Android: Mass validation / deactivation buttons

I have an activity where a bunch of buttons are placed inside TableLayout, not unlike a dial pad. During some operations I need to temporarily disable the buttons. To my unpleasant surprise doing TableLayout.setEnabled(false)
has no effect on the nested buttons. Am I stuck with setting each individual button or is there a nifty (better) way to achieve the same?

I’d try to do something like this:

TableLayout tableLayoutInstance; // let's suppouse you have already initialized it
// blablabla
// example to deactivate all buttons
ArrayList touchables = tableLayoutInstance.getTouchables();
for(View touchable : touchables){
    if( touchable instanceof Button )
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