In html input we used to put restriction like this on the number of characters:
<input type="text" maxlength="10" size="10" />
But in nativescript you would need to code it in the code behind file like.
var phoneField = view.getViewById(page,'phoneField'); var fArray = ; // 10 is the character length I want to restrict fArray = new android.text.InputFilter.LengthFilter(10); phoneField.android.setFilters(fArray);
Put the above code in pageloaded or anywhere so that it executes.