Does not auto size the text with bounded constraints

[baoxiehao]

Hi, I've tried the wrong and right code section to add constraints to the text widget, but it doesn't work, the font size is not scaled down, but just missing the later part of the text not shown.

      Widget _buildRepayRow() {
        return Row(
          children: <Widget>[
            Expanded(
              child: TextWidget(
                '${StringUtils.formatAmount(LoanUtils.equalPrincipalAndInterest(
                  creditTrialAmount,
                  vm.response.rateAnnualMin,
                  creditTrialTerm,
                ))} - ${StringUtils.formatAmount(LoanUtils.equalPrincipalAndInterest(
                  creditTrialAmount,
                  vm.response.rateAnnualMax,
                  creditTrialTerm,
                ))}',
                style: L.tsNumberHeaderDark,
                maxLines: 1,
                presetFontSizes: [L.f32, L.f24, L.f16, L.f14, L.f12],
              ),
            ),
          ],
        );
      }

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[baoxiehao]

Sorry, my mistakes. I've wrap it inside a custom text widget, but forgot to set the isAutoSize attribute...