TouchtooltipData stay not updated when I put the cursor still.

[tsuiwade]

Nice contribution! Thank you!

I'm updating the FLSpot with Timer.
The data and the chart will update, but the data in touchTooltip will not when I put the cursor still.
Should I write touchCallback?

I'm new in flutter.
please tell me how to write it?

Screenshots The gif is shown as follows.

Versions

• fl_chart: ^0.35.0
• Flutter (Channel master, 2.2.0-11.0.pre.242）

[imaNNeo]

It would be great if you give me a reproducible code to fix it faster.

[imaNNeo]

Fixed, wait for the next version. or check it out in dev branch.

[imaNNeo]

It must be fixed in 0.36.0. Check it out and let me know.

[tsuiwade]

Nice of you! Thanks!

This bug is fixed. However, there seems to appear a new bug which is shown as the gif.
barIndex seems no working in this version. It would be working in last version (fl-chart-0.35.0).
When I use double line, the barIndex will equal to 0(temperature line) or 1(humidity line) in last version.
However, in 0.36.0 version, there will be 0 only.

My part code is as follows.

      lineTouchData: LineTouchData(
        touchTooltipData: LineTouchTooltipData(
          maxContentWidth: 200,
          tooltipBgColor: Colors.white.withOpacity(0.8),
          getTooltipItems: (List<LineBarSpot> touchedBarSpots) {
            return touchedBarSpots.map((barSpot) {
              LineBarSpot flSpot;
              String textSensor;
              String unit;
              double flSpotY;
              Color colorText;
              if (barSpot.barIndex == 0) {
                flSpot = barSpot;
                textSensor = 'temperature: ';
                unit = ' (°C)';
                colorText = Color(0xfff64f59);
                flSpotY = NumUtil.getNumByValueDouble(flSpot.y, 1);
              }
              if (barSpot.barIndex == 1) {
                flSpot = barSpot;
                textSensor = 'humidity: ';
                unit = ' (%RH)';
                colorText = Color(0xff12c2e9);
                flSpotY = NumUtil.getNumByValueDouble(
                    ((flSpot.y - biasY2toY) / factorY2toY), 1);
              }
              return LineTooltipItem(
                textSensor,
                TextStyle(
                  color: colorText,
                  fontWeight: FontWeight.bold,
                ),
                children: [
                  TextSpan(
                    text: '\n' + flSpotY.toString(),
                    style: TextStyle(
                      color: colorText,
                      fontWeight: FontWeight.normal,
                    ),
                  ),
                  TextSpan(
                    text: unit,
                    style: TextStyle(
                      fontStyle: FontStyle.italic,
                      fontWeight: FontWeight.normal,
                    ),
                  ),
                ],
              );
            }).toList();
          },
        ),
      ),

I can’t thank you enough.

[imaNNeo]

Oh. Let's follow it in #665.

Thanks!

[imaNNeo]

Hi, I had to revert the changes in which have fixed this issue (It made another important issue)

Check out our new version:
0.36.1

Now let it be open. I will work on it again.

Thanks for reporting!

[itamarsch]

@imaNNeo

Untitled.video.mp4

Is this the same issue?