EditText 只能输入小数点后两位

在EditText的xml属性里面添加了android:inputType=”number|numberDecimal” 小数或者小数点

//数量监听
viewHolder.quantity.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {

        }

        @Override
        public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {

        }

        @Override
        public void afterTextChanged(Editable editable) {
            String editStr = editable.toString().trim();

            int posDot = editStr.indexOf(".");
            //不允许输入3位小数,超过三位就删掉
            if (posDot < 0) {
                return;
            }
            if (editStr.length() - posDot - 1 > 2) {
                editable.delete(posDot + 3, posDot + 4);
            } else {
                //TODO...在这里写逻辑
            }
        }
    });