Was working in 18.2.59 but now in 18.3.38 it's not working. I reverted back to 18.2.59 and it works like before. I have a Floating Action Button that calls a function that that sets the state of and toggles a variable between CalendarView.day and Calendar.workWeek. I've confirmed that the variable changes state but the UI doesn't update. In 18.2.59 it did as I expected and once the state is updated the UI updates as well. Did something change? Am I missing something? Thanks in advance!

[√] Flutter (Channel stable, 1.22.1-0.0.pre.2, on Microsoft Windows [Version 10.0.18362.1082], locale en-US)
• Flutter version 1.22.1-0.0.pre.2 at C:\Users<username>\Documents\flutter
• Framework revision 46098c6e5f (3 days ago), 2020-10-06 18:02:43 -0700
• Engine revision 5babba6c4d
• Dart version 2.10.0

[√] Android toolchain - develop for Android devices (Android SDK version 30.0.2)
• Android SDK at C:\Users<username>\Documents\android
• Platform android-30, build-tools 30.0.2
• ANDROID_SDK_ROOT = C:\Users<username>\Documents\android
• Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
• All Android licenses accepted.

[!] Android Studio (version 4.0)
• Android Studio at C:\Program Files\Android\Android Studio
X Flutter plugin not installed; this adds Flutter specific functionality.
X Dart plugin not installed; this adds Dart specific functionality.
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)

[√] VS Code (version 1.49.3)
• VS Code at C:\Users<username>\AppData\Local\Programs\Microsoft VS Code
• Flutter extension version 3.15.0

[√] Connected device (1 available)
• sdk gphone x86 (mobile) • emulator-5554 • android-x86 • Android 11 (API 30) (emulator)

! Doctor found issues in 1 category.

How we can search a column from SFGrid by using search bar.

In the current implementation it is only possible to hide or keep both edge labels

/// Placement of edge labels in the axis.
enum EdgeLabelPlacement {
  /// - EdgeLabelPlacement.none, places the edge labels in its own position.
  none,

  /// - EdgeLabelPlacement.hides, hide the edge labels.
  hide,

  /// - EdgeLabelPlacement.shift, shift the edge labels inside the plot area bounds.
  shift
}

I need to hide only the left most EdgeLabel, would work the same for the right one e.g.

/// Placement of edge labels in the axis.
enum EdgeLabelPlacement {
  /// - EdgeLabelPlacement.none, places the edge labels in its own position.
  none,

  /// - EdgeLabelPlacement.hides, hide the edge labels.
  hide,
  /// - EdgeLabelPlacement.hides, hide the left-most edge labels.
  hideLeft,
  /// - EdgeLabelPlacement.hides, hide the right-most edge labels.
  hideRight,
  /// - EdgeLabelPlacement.shift, shift the edge labels inside the plot area bounds.
  shift
}

Is there any way to position the Y axis on the right side?

Hello, thank you for great widgets, but I found issue in iPhone 6 with iOS 12.4.5, date 24 positioned horizontally(see screenshot)
code:

Widget _calendarWidget(BuildContext context) { return Center( child: Container( child: SfDateRangePicker( monthViewSettings: DateRangePickerMonthViewSettings( firstDayOfWeek: 1, ), onSelectionChanged: _onSelectionChanged, selectionMode: DateRangePickerSelectionMode.range, minDate: DateTime.now(), showNavigationArrow: false, allowViewNavigation: true, navigationDirection: DateRangePickerNavigationDirection.horizontal, selectionShape: DateRangePickerSelectionShape.circle, headerHeight: 60, rangeSelectionColor: Colors.red.withOpacity(0.5), endRangeSelectionColor: Colors.red, startRangeSelectionColor: Colors.red, ), ),); }
How can I fix it ?

development/flutter/.pub-cache/hosted/pub.dartlang.org/syncfusion_flutter_datagrid-18.3.44-beta/lib/src/sfdatagrid.dart:1136:32: Error: No named parameter with the name 'nullOk'.
MediaQuery.of(context, nullOk: true)?.textScaleFactor ?? 1.0;

Does this library have multi touch support? e.g. touch a graph at 2 different points like the stock graph for apple stocks on the iphone

Hello,
Could the widget pdf support chinese or no?
By testing the app, I input one chinese char, it can't generate pdf.
Thanks.

• flutter version any
• syncfusion_flutter_charts : ^18.3.44
  1. It's normal to run the app the first time
  

**2.when refresh the widget or perform hot reload , it will display errors(end to end)，The data is obtained by network request **

code
`class EchartsWidget extends StatefulWidget{

@OverRide
State createState() {
return EchartsWidgetState();
}

}

class EchartsWidgetState extends State{
RefreshController _refreshController =
RefreshController(initialRefresh: false);

void _onRefresh() async {
// monitor network fetch
await Future.delayed(Duration(milliseconds: 1000));
if (mounted)
setState(() {
});
// if failed,use refreshFailed()
_refreshController.refreshCompleted();
}

List resultDataList = [];
List todayDataListOld = [];
List yesterdayDataListOld = [];
var unit;
List todayDataList = List();
List yesterdayDataList = List();

timestampToDateechart(timestamp) {
var date = DateTime.fromMillisecondsSinceEpoch(timestamp);
return date.toString().substring(0, 16);
}

getEchartData(List resultDataList) {

  ResultData data1 = resultDataList[0];
  ResultData data2 = resultDataList[1];
  if (data1.name == "今日") {
    todayDataListOld = data1.data;
    yesterdayDataListOld = data2.data;
  } else {
    todayDataListOld = data2.data;
    yesterdayDataListOld = data1.data;
  }


  for (int i = 0; i < todayDataListOld.length; i++) {
    String timestamp = timestampToDateechart(todayDataListOld[i].date-(24 * 60 * 60 * 1000));
    print("今日" + timestamp);
    var time = DateTime.parse(timestamp);
    var value = double.parse(todayDataListOld[i].value);
    todayDataList.add(new EchartsData(time, value));
  }

  for (int i = 0; i < yesterdayDataListOld.length; i++) {
    String timestamp = timestampToDateechart(yesterdayDataListOld[i].date);
    var time = DateTime.parse(timestamp);
    print("昨日" + timestamp);
    var value = double.parse(yesterdayDataListOld[i].value) ;
    yesterdayDataList.add(new EchartsData(time, value));
  }

}

@OverRide
Widget build(BuildContext context) {
return SmartRefresher(
enablePullDown: true,
header: MaterialClassicHeader(),
controller: _refreshController,
onRefresh: _onRefresh,
child: Container(
child: FutureBuilder(
future: WholeFactoryService().getEchartsData(),
builder: (BuildContext context, AsyncSnapshot snapshot){
if(snapshot.connectionState == ConnectionState.done){
resultDataList = snapshot.data;
getEchartData(resultDataList);
return Container(
width: 300,
height: 300,
child: SfCartesianChart(
title: ChartTitle(
text: '发电负荷(MW)',
alignment: ChartAlignment.near
),
legend: Legend(
isVisible:true,
position: LegendPosition.auto,
),
backgroundColor: Color(0xff2775c7),
// Initialize category axis
primaryXAxis: DateTimeAxis(
//isVisible: true,
dateFormat: DateFormat.Hm(),

                  ),
                  primaryYAxis: NumericAxis(
                    axisLine: AxisLine(width: 0),
                  ),

                  series: <LineSeries<EchartsData, DateTime>>[
                    LineSeries<EchartsData, DateTime>(
                        color: Color(0xff05fcff),
                        // Bind data source
                        dataSource: todayDataList,
                        xValueMapper: (EchartsData data, _) => data.time,
                        yValueMapper: (EchartsData data, _) => data.value,
                        legendItemText: "今日",

                    ),
                    LineSeries<EchartsData, DateTime>(

                        color: Color(0xfff5a92f),
                        // Bind data source
                        dataSource: yesterdayDataList,
                        xValueMapper: (EchartsData data, _) => data.time,
                        yValueMapper: (EchartsData data, _) => data.value,
                        legendItemText: "昨日",
                        isVisible: true,

                    ),
                  ]
              ),
            );

          }else{
            return Container();
          }
        },
      ),
    ),
);

}
}

class EchartsData {
EchartsData(this.time, this.value);

DateTime time;
num value;
}`

When I explorer the CalendarController (view type is CalendarView.month), I wonder why not have any solution to manually tap on calendar cell by programmarically. I have already tried selectedDate setter of CalendarController, but nothing happened.

Any solution for this scenarios? Thanks so much

Hello. First of all thanks for this package .

This package is support search text and highlight text ?

i want to custom add annotation based on x,y cordinate.is there any way to get taped region in pdf viewer

════════════ Exception caught by widgets library ═════════════════
type '_PdfNull' is not a subtype of type '_PdfDictionary' in type cast
The relevant error-causing widget was:
SfPdfViewer file:///Users/claireliu/Desktop/meet_taipei_flutter/lib/page/intro/pdf_viewer_page.dart:15:23
═════════════════════════════════════════════════════

        SfPdfViewer.network(
            "https://osensetech.blob.core.windows.net/meettaipei/IC-07_poster.pdf",
            canShowScrollHead: false,
            canShowScrollStatus: false,
            canShowPaginationDialog: false,
            enableDoubleTapZooming: false,
            onDocumentLoadFailed: (detail) {
              print(detail.error);
            },
          );

Hey,
Please see in the below linked vide, I have set fixed screen data but its screen only data cell, kindly advice me how to stop this scrolling its impact on my whole Screen where i have set multiple widget of scrolling.

Just like we were did in ListView physics = NeverScrollableScrollPhysics() for disable scrolling,
Please provide me an option or code for disable scrolling on fixed screen data

We have a SplineAreaSeries chart and we would like to support two different colours on the graph, blue for data points above zero and red and data points below zero. Does SplineAreaSeries support multiple colours?

I'm getting the following error when compiling

Compiler message:
../../../AppData/Local/Pub/Cache/hosted/pub.dartlang.org/syncfusion_flutter_sliders-18.3.40-beta/lib/src/slider.dart:1232:7: Error: The non-abstract class '_RenderSliderElement' is missing implementations for these members:
RenderObjectElement.insertChildRenderObject
RenderObjectElement.moveChildRenderObject
RenderObjectElement.removeChildRenderObject

im using syncfusion_flutter_pdf: ^18.3.35-beta
plz help me to fix this... I want to add DataRows from my getBIlls.bill list. Help me to fix this...

my code

DataTable dataTable = DataTable(
                          columns: const <DataColumn>[
                            DataColumn(label: Text('Series From')),
                            DataColumn(label: Text('Series To')),
                            DataColumn(label: Text('No From')),
                            DataColumn(label: Text('No To')),
                            DataColumn(label: Text('QTY')),
                            DataColumn(label: Text('Price')),
                          ],
                          rows: getBill.bill.map(
                            (value) => DataRow(cells: <DataCell>[
                              DataCell(Text(value.series_from.toString())),
                              DataCell(Text(value.series_to.toString())),
                              DataCell(Text(value.no_from.toString())),
                              DataCell(Text(value.no_to.toString())),
                              DataCell(Text(value.qty.toString())),
                              DataCell(Text(value.mrp.toString())),
                            ]),
                          ));
                      DataTable invoiceDetails = dataTable;

getting error

Error: Expected a value of type 'List<DataRow>', but got one of type 'MappedListIterable<Bill, DataRow>'
    at Object.throw_ [as throw] (http://localhost:62775/dart_sdk.js:4328:11)
    at Object.castError (http://localhost:62775/dart_sdk.js:4299:15)
    at Object.cast [as as] (http://localhost:62775/dart_sdk.js:4615:17)
    at dart.LegacyType.new.as (http://localhost:62775/dart_sdk.js:6159:60)
    at GenerateBill.ShowBill.new.<anonymous> (http://localhost:62775/packages/lotto_pos/GenerateBill.dart.lib.js:3060:121)
    at Generator.next (<anonymous>)
    at runBody (http://localhost:62775/dart_sdk.js:37613:34)
    at Object._async [as async] (http://localhost:62775/dart_sdk.js:37644:7)
    at ink_well._InkResponseStateWidget.new.<anonymous> (http://localhost:62775/packages/lotto_pos/GenerateBill.dart.lib.js:3032:7173)
    at ink_well._InkResponseState.new.[_handleTap] (http://localhost:62775/packages/flutter/src/material/icon_button.dart.lib.js:47433:21)
    at http://localhost:62775/packages/flutter/src/material/icon_button.dart.lib.js:47535:668
    at tap.TapGestureRecognizer.new.invokeCallback (http://localhost:62775/packages/flutter/src/gestures/recognizer.dart.lib.js:189:18)
    at tap.TapGestureRecognizer.new.handleTapUp (http://localhost:62775/packages/flutter/src/gestures/tap.dart.lib.js:395:40)
    at tap.TapGestureRecognizer.new.[_checkUp] (http://localhost:62775/packages/flutter/src/gestures/tap.dart.lib.js:201:12)
    at tap.TapGestureRecognizer.new.handlePrimaryPointer (http://localhost:62775/packages/flutter/src/gestures/tap.dart.lib.js:148:23)
    at tap.TapGestureRecognizer.new.handleEvent (http://localhost:62775/packages/flutter/src/gestures/recognizer.dart.lib.js:448:16)
    at pointer_router.PointerRouter.new.[_dispatch] (http://localhost:62775/packages/flutter/src/gestures/pointer_router.dart.lib.js:74:9)
    at http://localhost:62775/packages/flutter/src/gestures/pointer_router.dart.lib.js:109:26
    at LinkedMap.new.forEach (http://localhost:62775/dart_sdk.js:24743:11)
    at pointer_router.PointerRouter.new.[_dispatchEventToRoutes] (http://localhost:62775/packages/flutter/src/gestures/pointer_router.dart.lib.js:106:29)
    at pointer_router.PointerRouter.new.route (http://localhost:62775/packages/flutter/src/gestures/pointer_router.dart.lib.js:98:37)
    at binding$5.WidgetsFlutterBinding.new.handleEvent (http://localhost:62775/packages/flutter/src/gestures/binding.dart.lib.js:303:26)
    at binding$5.WidgetsFlutterBinding.new.dispatchEvent (http://localhost:62775/packages/flutter/src/gestures/binding.dart.lib.js:286:24)
    at binding$5.WidgetsFlutterBinding.new.dispatchEvent (http://localhost:62775/packages/flutter/src/rendering/layer.dart.lib.js:5949:13)
    at binding$5.WidgetsFlutterBinding.new.[_handlePointerEvent] (http://localhost:62775/packages/flutter/src/gestures/binding.dart.lib.js:257:14)
    at binding$5.WidgetsFlutterBinding.new.[_flushPointerEventQueue] (http://localhost:62775/packages/flutter/src/gestures/binding.dart.lib.js:229:35)
    at binding$5.WidgetsFlutterBinding.new.[_handlePointerDataPacket] (http://localhost:62775/packages/flutter/src/gestures/binding.dart.lib.js:213:65)
    at Object._invoke1 (http://localhost:62775/dart_sdk.js:175453:7)
    at _engine.EngineWindow.new.invokeOnPointerDataPacket (http://localhost:62775/dart_sdk.js:171307:15)
    at _engine.PointerBinding.__.[_onPointerData] (http://localhost:62775/dart_sdk.js:158211:24)
    at http://localhost:62775/dart_sdk.js:158598:26
    at http://localhost:62775/dart_sdk.js:158557:16
    at http://localhost:62775/dart_sdk.js:158310:11

Hello,I using the code like
#3
you give me.
It can generate chinese in pdf but I can't be printed.
this is open in pdf

this is prview before print

It can only print the symbol ","

i realize when try to place an image it crashes when i take out the code it works fine. is there something i am missing?

PdfImage image = PdfBitmap.fromBase64String('R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7');

//Draws the image to the PDF page
page.graphics.drawImage(image, Rect.fromLTWH(pageSize.width - 30, pageSize.height - 70, 0, 0));

syncfusion_flutter_datagrid-18.3.44-beta/lib/src/sfdatagrid.dart:1136:32: Error: No named parameter with the name 'nullOk'.
MediaQuery.of(context, nullOk: true)?.textScaleFactor ?? 1.0;

We have todayCellDecoration,cellDecoration,blackoutDatesDecoration etc. but we dont have SelectedCellDecoration.
I want to be able to change decoration of SelectedCells and cells Between startRange,endRange.

Good afternoon

Guys my question is very simple is there a provision for updating the dependency used in syncfusion_flutter_corre called pedantic?

I'm asking this because version 18.3.40 is incompatible with the latest version of the test plugin so I can't get both to work as per the message below:

Because test> = 1.16.0-nullsafety.5 depends on pedantic> = 1.10.0-nullsafety <1.10.0 and syncfusion_flutter_core 18.3.40 depends on pedantic> = 1.9.0 <1.9.9, test> = 1.16.0- nullsafety.5 is incompatible with syncfusion_flutter_core 18.3.40.

So, because app depends on both syncfusion_flutter_core 18.3.40 and test 1.16.0-nullsafety.5, version solving failed.
pub get failed (1; So, because app depends on both syncfusion_flutter_core 18.3.40 and test 1.16.0-nullsafety.5, version solving failed.)

I am facing an issue when using the datepicker package.
If I try to give an image to the cell decoration property, i get the following error.

"The following assertion was thrown during paint():
'package:flutter/src/painting/box_decoration.dart': Failed assertion: line 378 pos 12: 'onChanged != null || image == null': is not true."

This is how I am using it -
`
SfDateRangePicker(
minDate: DateTime(DateTime.now().year, DateTime.now().month),
maxDate: DateTime(DateTime.now().year, DateTime.now().month + 1, 0),
selectionTextStyle: TextStyle(color: AppColor.white),
monthViewSettings: DateRangePickerMonthViewSettings(
specialDates: leaveDays,

                        ),
                        monthCellStyle: DateRangePickerMonthCellStyle(
                          cellDecoration: BoxDecoration(
                            image: DecorationImage(
                              image: AssetImage('assets/icons/icon.png'),
                            ),
                          ),
                          specialDatesDecoration: BoxDecoration(
                            color: AppColor.saffron,
                            border: Border.all(color: AppColor.saffron, width: 1),
                            shape: BoxShape.circle,
                          ),
                        ),
                      ),

`

flutter doctor output -

[✓] Flutter (Channel stable, 1.22.1, on Mac OS X 10.15.6 19G2021, locale en-IN)
• Flutter version 1.22.1 at /Users/vaibhav/Documents/flutter
• Framework revision f30b7f4db9 (2 weeks ago), 2020-10-08 10:06:30 -0700
• Engine revision 75bef9f6c8
• Dart version 2.10.1

[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.1)
• Android SDK at /Users/vaibhav/Library/Android/sdk
• Platform android-30, build-tools 30.0.1
• ANDROID_HOME = /Users/vaibhav/Library/Android/sdk
• Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)
• All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 12.0)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Xcode 12.0, Build version 12A7209
• CocoaPods version 1.9.3

[✓] Android Studio (version 4.0)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin version 46.0.2
• Dart plugin version 193.7361
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)

[✓] VS Code (version 1.50.1)
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 3.15.1

[✓] Connected device (2 available)
• Android SDK built for x86 (mobile) • emulator-5554 • android-x86 • Android 7.1.1 (API 25) (emulator)
• iPhone 11 (mobile) • D1539A6B-139F-4F52-A9E9-6A051D602C62 • ios • com.apple.CoreSimulator.SimRuntime.iOS-14-0 (simulator)

• No issues found!

I want to be able to change decoration of DoughnutSeries. We currently can change color,text and percantage. I need to be able to add boxshadow and gradient into chart.

 final List<ChartData> chartData = [
    ChartData('LIVE', 25, Color(0x0ff7262E4)),
    ChartData('MESAJ', 38, Color(0x0ffdce1e8)),
    ChartData('VIDEO', 54, Color(0x0ffADB3FF)),
  ];
DoughnutSeries<ChartData, String>(
          dataSource: chartData,
          
          pointColorMapper: (ChartData data, _) => data.color,
          xValueMapper: (ChartData data, _) => data.name,
          yValueMapper: (ChartData data, _) => data.percentage,
          dataLabelMapper: (ChartData data, _) => data.name,)

SfCartesianChart(
              plotAreaBorderWidth: 0,
              primaryXAxis: CategoryAxis(
                isVisible: true,
                labelStyle: TextStyle(color: Colors.black.withOpacity(0.0)),
                majorGridLines: MajorGridLines(width: 0),
                majorTickLines: MajorTickLines(width: 0),
                axisLine: AxisLine(color: Colors.black, width: 2),
              ),
              primaryYAxis: NumericAxis(
                isVisible: true,
                crossesAt: 0,
                numberFormat: chartYLabelFormat,
                labelStyle: chartLabel,
                axisLine: AxisLine(width: 0),
                majorGridLines: MajorGridLines(width: 2,
                    dashArray: <double>[2,2]),
                majorTickLines: MajorTickLines(
                  width: 0,
                ),
              ),
              trackballBehavior: TrackballBehavior(
                  enable: true,
                  tooltipSettings: InteractiveTooltip(
                      format: "point.x:  point.y", color: Colors.black)),
              series: getGradientAreaSeries(),
            ),

on mobile prodcues:

on web produces:

Hi
We need begin change and end change events for slider.
Thank you

Whenever i am scrolling vertically or horizontally then below line is showing but after few seconds it is hiding.. in scrolling it should not hide

I want to add hyperlink function on image position

Enhancement:Already Modified image contain button or text .adding hyperlink base on image position .

I'm trying to upgrade Flutter version on my project, but looks like that there are incompatible dependencies on the project:

Because test >=1.16.0-nullsafety.5 depends on pedantic >=1.10.0-nullsafety <1.10.0 and syncfusion_flutter_core >=18.2.54 depends on pedantic >=1.9.0 <1.9.9, test >=1.16.0-nullsafety.5 is incompatible with syncfusion_flutter_core >=18.2.54.

How could I solve that?

Hi, I need overallDataPointIndex as argument of onDataLabelTapped similar to onSelectionChanged

Thanks

I have a use case where i need to check the current value before creating the BorderRaduis and went through the documentation but i couldn't find a solution for it.
so maybe adding a borderRaduisMapper : (T point)=> BorderRaduis to the ChartSeries will make it easy to customize it.

Kind regards!

When the user on a mobile device is using their finger to navigate the track ball, if their finger leaves the graph slightly the trackball disapears. On IOS in the stock app the user can start in the graph but then leave the graph and the trackball will still follow their finger.

Other charting libraries for flutter have this by default it is sad to see that this does not support this

Crash in syncfusion_flutter_charts 18.3.38
NoSuchMethodError: The getter 'iterator' was called on null. Receiver: null Tried calling: iterator. Error thrown Instance of 'ErrorDescription'. _GrowableList.addAll

Crashed: pool-16-thread-6
       at _GrowableList.addAll(_GrowableList.java)
       at SfCircularChartState._createAndUpdateSeriesRenderer(SfCircularChartState.java:808)
       at SfCircularChartState.didUpdateWidget(SfCircularChartState.java:627)
       at StatefulElement.update(StatefulElement.java:4815)
       at Element.updateChild(Element.java:3314)
       at ComponentElement.performRebuild(ComponentElement.java:4652)

I'm trying to style the cells in my SfDataGrid with this code:

SfDataGridTheme( data: SfDataGridThemeData( headerStyle: DataGridHeaderCellStyle( backgroundColor: Colors.black54, textStyle: TextStyle( color: Colors.white, fontFamily: 'HNMed', fontSize: 12.sp, ), ), cellStyle: DataGridCellStyle( textStyle: TextStyle( fontFamily: 'HNMed', ), ), ), child: SfDataGrid(....), ),

The above code throws this error:

|I/flutter (12465): ══╡ EXCEPTION CAUGHT BY RENDERING LIBRARY ╞═════════════════════════════════════════════════════════ I/flutter (12465): The following assertion was thrown during paint(): I/flutter (12465): 'dart:ui/painting.dart': Failed assertion: line 1147: '<optimized out>': is not true. I/flutter (12465): The relevant error-causing widget was: I/flutter (12465): _VirtualizingCellsRenderObjectWidget-[DataRow#88901] I/flutter (12465): file:///D:/flutter/.pub-cache/hosted/pub.dartlang.org/syncfusion_flutter_datagrid-18.3.38-beta/lib/src/control/cell_control/virtualizing_cells_widget.dart:22:12 I/flutter (12465): When the exception was thrown, this was the stack: I/flutter (12465): #2 Paint.color= (dart:ui/painting.dart:1147:12) I/flutter (12465): #3 _RenderVirtualizingCellsWidget._drawRowBackground (package:syncfusion_flutter_datagrid/src/control/cell_control/virtualizing_cells_widget.dart:204:35) I/flutter (12465): #4 _RenderVirtualizingCellsWidget.paint (package:syncfusion_flutter_datagrid/src/control/cell_control/virtualizing_cells_widget.dart:328:5) I/flutter (12465): #5 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2311:7)I/flutter (12465): #6 PaintingContext._repaintCompositedChild (package:flutter/src/rendering/object.dart:140:11) I/flutter (12465): #7 PaintingContext.repaintCompositedChild (package:flutter/src/rendering/object.dart:100:5) I/flutter (12465): #8 PipelineOwner.flushPaint (package:flutter/src/rendering/object.dart:978:29) I/flutter (12465): #9 RendererBinding.drawFrame (package:flutter/src/rendering/binding.dart:438:19) I/flutter (12465): #10 WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:914:13) I/flutter (12465): #11 RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:302:5) I/flutter (12465): #12 SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1117:15) I/flutter (12465): #13 SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1055:9) I/flutter (12465): #14 SchedulerBinding.scheduleWarmUpFrame.<anonymous closure> (package:flutter/src/scheduler/binding.dart:864:7) I/flutter (12465): (elided 6 frames from class _AssertionError, class _RawReceivePortImpl, class _Timer, and dart:async-patch) I/flutter (12465): The following RenderObject was being processed when the exception was fired: _RenderVirtualizingCellsWidget#b8516: I/flutter (12465): needs compositing I/flutter (12465): creator: _VirtualizingCellsRenderObjectWidget-[DataRow#88901] ← I/flutter (12465): _VirtualizingCellsWidget-[DataRow#88901] ← _VisualContainerRenderObjectWidget ← _VisualContainer ← I/flutter (12465): ConstrainedBox ← _SingleChildViewport ← IgnorePointer-[GlobalKey#50be6] ← Semantics ←I/flutter (12465): _PointerListener ← Listener ← _GestureSemantics ← I/flutter (12465): RawGestureDetector-[LabeledGlobalKey<RawGestureDetectorState>#09b13] ← ⋯ I/flutter (12465): parentData: offset=Offset(0.0, 245.0) (can use size) I/flutter (12465): constraints: BoxConstraints(w=457.1, h=49.0) I/flutter (12465): layer: OffsetLayer#858a2 I/flutter (12465): size: Size(457.1, 49.0) I/flutter (12465): This RenderObject had the following descendants (showing up to depth 5): I/flutter (12465): child 1: _RenderGridCell#8a5c7 I/flutter (12465): child: RenderSemanticsAnnotations#7742b I/flutter (12465): child: RenderSemanticsGestureHandler#cd669 I/flutter (12465): child: RenderPointerListener#7ed6d I/flutter (12465): child: RenderDecoratedBox#ba529 I/flutter (12465): child 2: _RenderGridCell#a982f I/flutter (12465): child: RenderSemanticsAnnotations#1e823 I/flutter (12465): child: RenderSemanticsGestureHandler#1bf4c I/flutter (12465): child: RenderPointerListener#17434 I/flutter (12465): child: RenderDecoratedBox#b0207 I/flutter (12465): child 3: _RenderGridCell#aca11 I/flutter (12465): child: RenderSemanticsAnnotations#157c1 I/flutter (12465): child: RenderSemanticsGestureHandler#73e7d I/flutter (12465): child: RenderPointerListener#d4c76 I/flutter (12465): child: RenderDecoratedBox#4e7ca I/flutter (12465): ════════════════════════════════════════════════════════════════════════════════════════════════════ I/flutter (12465): Another exception was thrown: 'dart:ui/painting.dart': Failed assertion: line 1147: '<optimized out>': is not true. I/flutter (12465): Another exception was thrown: 'dart:ui/painting.dart': Failed assertion: line 1147: '<optimized out>': is not true. I/flutter (12465): Another exception was thrown: 'dart:ui/painting.dart': Failed assertion: line 1147: '<optimized out>': is not true. I/flutter (12465): Another exception was thrown: 'dart:ui/painting.dart': Failed assertion: line 1147: '<optimized out>': is not true. I/flutter (12465): Another exception was thrown: 'dart:ui/painting.dart': Failed assertion: line 1147: '<optimized out>': is not true.

Only when I add a cellStyle property the exception is thrown. But when I remove the property, it works.

i think there is a bug
if low and high and open and close are the same equal it dose not show anything
i hope u can fix this.
thank u for ur awosoome project.

Hi all, in the google calendar, the users can touch to resize the calendar schedule.
Eg: We can increase or decrease hours when touching and enlarge the schedule.
Would you please add the feature on syncfusion calendar.
Thank you very much, your calendar is nice and if we have the feature that i told, it will be nicer.

• flutter version any
• syncfusion_flutter_charts : ^18.3.40 or other version

The display error is as follows

Code

import 'package:flutter/material.dart';
import 'package:syncfusion_flutter_charts/charts.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: TargetCacheRateChart(),
    );
  }
}

class TargetCacheRateChart extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    List<TestEntity> list = [
      TestEntity("10-01", 25.4),
      TestEntity("10-02", 26.4),
      TestEntity("10-03", 26.8),
      // TestEntity("10-04", 25.6),
      // TestEntity("10-05", 24.3),
      // TestEntity("10-06", 25.6),
      // TestEntity("10-07", 25.8),
      TestEntity("10-08", 24.6),
      TestEntity("10-09", 25.6),
      TestEntity("10-10", 26.6),
      TestEntity("10-11", 26.4),
      TestEntity("10-12", 26.7),
      TestEntity("10-13", 26.3),
      TestEntity("10-14", 26.7),
    ];

    List<TestEntity> list2 = [
      TestEntity("10-01", 35.4),
      TestEntity("10-02", 36.4),
      TestEntity("10-03", 36.8),
      TestEntity("10-04", 35.6),
      TestEntity("10-05", 14.3),
      TestEntity("10-06", 35.6),
      TestEntity("10-07", 45.8),
      TestEntity("10-08", 34.6),
      TestEntity("10-09", 35.6),
      TestEntity("10-10", 36.6),
      // TestEntity("10-11", 26.4),
      // TestEntity("10-12", 26.7),
      // TestEntity("10-13", 26.3),
      // TestEntity("10-14", 26.7),
    ];

    List<LineSeries> buildCacheRate = [
      LineSeries<TestEntity, String>(
          name: "line1",
          dataSource: list,
          xValueMapper: (TestEntity entity, _) => entity.date,
          yValueMapper: (TestEntity entity, _) => entity.y),
      LineSeries<TestEntity, String>(
          name: "line2",
          dataSource: list2,
          xValueMapper: (TestEntity entity, _) => entity.date,
          yValueMapper: (TestEntity entity, _) => entity.y),
    ];

    return Container(
        child: SfCartesianChart(
            plotAreaBorderWidth: 0,
            primaryXAxis: CategoryAxis(
              majorGridLines: MajorGridLines(width: 0),
              axisLine: AxisLine(width: 0),
            ),
            palette: [
              new Color(0xFF5B8FF9),
              new Color(0xFFE8684A),
            ],
            primaryYAxis: NumericAxis(
                axisLine: AxisLine(width: 0),
                labelFormat: '{value} %',
                majorTickLines: MajorTickLines(size: 0)),
            legend: new Legend(isVisible: true),
            series: buildCacheRate));
  }
}

class TestEntity {
  String date;
  double y;

  TestEntity(this.date, this.y);
}

I am trying to switch calendar view in my app e.g ( from day to month ) but it doesn't to respond to state change. This happens in the latest version ( 18.3.42 ). When I tried the example given in : https://github.com/SyncfusionExamples/view-switching-calendar-flutter ; it seems to work in version ( syncfusion_flutter_calendar: ^17.4.39 ) but when updating the version to the latest it doesn't change.

is this package support horizontal veiw? or will you support horizontal view?

Hi ,

Firstly thank you for this elegant chart library. I registered your system with Community license programme. I can see my license key on dashboard panel but i did not find any documentation about how i can apply this license on my flutter application. Do I need to take action on my flutter application with this license key ?

Thanks.

Library version - syncfusion_flutter_charts: ^18.3.44

The current Dart SDK version is 2.10.2.

Because every version of flutter_test from sdk depends on test_api 0.2.19-nullsafety.2 and test >=1.15.3 <1.16.0-nullsafety depends on test_api 0.2.18, flutter_test from sdk is incompatible with test >=1.15.3 <1.16.0-nullsafety.
Because test >=1.16.0-nullsafety <1.16.0-nullsafety.5 requires SDK version >=2.10.0-0 <2.10.0 and test >=1.16.0-nullsafety.5 depends on pedantic >=1.10.0-nullsafety <1.10.0, test >=1.16.0-nullsafety requires pedantic >=1.10.0-nullsafety <1.10.0.
Thus, if flutter_test any from sdk and test >=1.15.3 then pedantic >=1.10.0-nullsafety <1.10.0.
And because syncfusion_flutter_core >=18.2.54 depends on pedantic >=1.9.0 <1.9.9, one of flutter_test any from sdk or test >=1.15.3 or syncfusion_flutter_core >=18.2.54 must be false.
And because stack_app depends on syncfusion_flutter_charts ^18.3.44 which depends on syncfusion_flutter_core ^18.3.44, flutter_test from sdk is incompatible with test >=1.15.3.
So, because stack_app depends on both flutter_test any from sdk and test ^1.15.4, version solving failed.
pub get failed (1; So, because stack_app depends on both flutter_test any from sdk and test ^1.15.4, version solving failed.)
Process finished with exit code 1

Here is the output of flutter doctor -v

$ flutter doctor -v
[√] Flutter (Channel stable, 1.22.2, on Microsoft Windows [Version 10.0.19041.572], locale en-US)
    • Flutter version 1.22.2 at C:\Users\yash\flutter
    • Framework revision 84f3d28555 (2 weeks ago), 2020-10-15 16:26:19 -0700
    • Engine revision b8752bbfff
    • Dart version 2.10.2


[√] Android toolchain - develop for Android devices (Android SDK version 30.0.2)
    • Android SDK at C:\Users\yash\AppData\Local\Android\Sdk
    • Platform android-30, build-tools 30.0.2
    • ANDROID_HOME = C:\Users\yash\AppData\Local\Android\Sdk
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
    • All Android licenses accepted.

[√] Android Studio (version 4.0)
    • Android Studio at C:\Program Files\Android\Android Studio
    • Flutter plugin installed
    • Dart plugin version 193.7547
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)

[√] VS Code (version 1.50.1)
    • VS Code at C:\Users\yash\AppData\Local\Programs\Microsoft VS Code
    • Flutter extension version 3.15.1

Hi :)
I'm trying to use two layers with SfMaps, however, after checking the code I saw that only show the last layer, it's supposed to happen?

https://github.com/syncfusion/flutter-widgets/blob/master/packages/syncfusion_flutter_maps/lib/src/maps.dart#L221

Stack(
              alignment: Alignment.center,
              children: <Widget>[widget.layers.last],
            ),

I have seen when we showing data cell
cellStyle: DataGridCellStyle(
textStyle: TextStyle(fontSize: 10,),)
aligment of Text is missing please add Text Aligment its by default aligment left is showing

center, right etc is not showing just pass aligment params inside DataGridCellStyle() constructor

Add heat map like in the following picture:

When you try scrolling on the graph to scroll down the page, the scrolling wont work when Crosshair is enabled

CrosshairBehavior(
                enable: true,)

. Which is good for some cases, and bad for others.
The long press activation method should allow users to easily scroll down when the crosshair has not been pressed for a long time.

Let me know if you need any more information.

Hi, I just start working with this package and seems to be a great work. However, after updating a few cell with app and asking to save the on progress data to a sheet I never get the task done. The result is always a blank sheet.

Currently II'm developing an app for desktop with Flutter. I had no intention to build mobile versions for this app.

I'm working on macOS but have have easy on switching to any other OS. Here's the snippet from wen I try to sae the data:

/// Save workbook data to a file
  void save(String directoryPath, List<CodeModel> validatedCodes) {
    final sheet = _workbook.worksheets[0];

    var globalStyle = _workbook.styles.add('style');
    globalStyle.backColor = '#37D8E9';
    globalStyle.fontName = 'Times New Roman';
    globalStyle.fontSize = 20;
    globalStyle.fontColor = '#C67878';
    globalStyle.italic = true;
    globalStyle.bold = true;
    globalStyle.underline = true;
    globalStyle.wrapText = true;
    globalStyle.hAlign = HAlignType.left;
    globalStyle.vAlign = VAlignType.bottom;
    globalStyle.rotation = 90;
    globalStyle.borders.all.color = '#9954CC';

    for (int row = 1; row == validatedCodes.length; row++) {
      for (int column = 1; column == 4; column++) {
        sheet.getRangeByIndex(column, row).cellStyle = globalStyle;
        sheet.getRangeByIndex(column, row).setText('Hello world');
      }
    }

    List<int> bytes = _workbook.saveAsStream();
    File(join(directoryPath, 'validated-codes.xlsx')).writeAsBytes(bytes);

    //Dispose the workbook.
    _workbook.dispose();
  }

Here is the blank sheet result:

flutter doctor -v

[✓] Flutter (Channel master, 1.23.0-8.0.pre.27, on Mac OS X 10.15.6 19G2021 x86_64, locale en-BR)
    • Flutter version 1.23.0-8.0.pre.27 at /opt/flutter
    • Framework revision 8db31a556b (2 weeks ago), 2020-09-28 14:32:00 +0200
    • Engine revision 3a73d073c8
    • Dart version 2.11.0 (build 2.11.0-161.0.dev)

 
[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.2)
    • Android SDK at /Users/rafael/Library/Android/sdk
    • Platform android-30, build-tools 30.0.2
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 12.0.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 12.0.1, Build version 12A7300
    • CocoaPods version 1.9.3

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 4.0)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin version 48.1.2
    • Dart plugin version 193.7547
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)

[✓] Android Studio (version 4.0)
    • Android Studio at /Applications/Android Studio 2.app/Contents
    • Flutter plugin version 48.1.2
    • Dart plugin version 193.7547
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)

[✓] IntelliJ IDEA Community Edition (version 2020.2.2)
    • IntelliJ at /Applications/IntelliJ IDEA CE.app
    • Flutter plugin installed
    • Dart plugin version 202.7319.5

[✓] Connected device (3 available)
    • macOS (desktop)  • macos      • darwin-x64     • Mac OS X 10.15.6 19G2021 x86_64
    • Web Server (web) • web-server • web-javascript • Flutter Tools
    • Chrome (web)     • chrome     • web-javascript • Google Chrome 85.0.4183.121

• No issues found!

How i add custom notes on pdfviewer .Get the pdf selected coordinate

Flutter Calendar throws a TypeErrorImpl exception when clicking on appointment in monthview with custom appointments.
Using Flutter Web on beta channel and syncfusion_flutter_calendar: ^18.3.44

════════ Exception caught by gesture ═══════════════════════════════════════════
The following TypeErrorImpl was thrown while handling a gesture:
Expected a value of type 'Appointment', but got one of type 'Meeting'

When the exception was thrown, this was the stack
dart-sdk/lib/internal/js_dev_runtime/private/ddc_runtime/errors.dart 216:49 throw
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/errors.dart 64:3 castError
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/operations.dart 442:10 cast
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/types.dart 420:9 as
packages/syncfusion_flutter_calendar/src/calendar/views/calendar_view.dart 1411:59 [_handleTouchOnMonthView]
...
Handler: "onTapUp"
Recognizer: TapGestureRecognizer#148a5
debugOwner: GestureDetector
state: ready
won arena
finalPosition: Offset(142.0, 163.0)
finalLocalPosition: Offset(137.0, 67.0)
button: 1
sent tap down
════════════════════════════════════════════════════════════════════════════════

Source:
import 'package:flutter/material.dart';
import 'package:syncfusion_flutter_calendar/calendar.dart';

class CalendarScreen extends StatefulWidget {
const CalendarScreen({Key key}) : super(key: key);
@OverRide
_CalendarScreenState createState() => _CalendarScreenState();
}

MeetingDataSource _events;

class _CalendarScreenState extends State {
CalendarView _calendarView;
List appointments;

@OverRide
void initState() {
_calendarView = CalendarView.month;
appointments = getMeetingDetails();
_events = MeetingDataSource(appointments);
super.initState();
}

@OverRide
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Calendar'),
),
body: Padding(
padding: const EdgeInsets.fromLTRB(5, 0, 5, 5),
child: getEventCalendar(_calendarView, _events, onCalendarTapped)));
}

SfCalendar getEventCalendar(
[CalendarView _calendarView,
CalendarDataSource _calendarDataSource,
CalendarTapCallback calendarTapCallback]) {
return SfCalendar(
allowViewNavigation: true,
view: _calendarView,
allowedViews: [
CalendarView.day,
CalendarView.week,
CalendarView.month,
CalendarView.schedule,
],
dataSource: _calendarDataSource,
onTap: calendarTapCallback,
initialDisplayDate: DateTime(DateTime.now().year, DateTime.now().month,
DateTime.now().day, 0, 0, 0),
monthViewSettings: MonthViewSettings(
appointmentDisplayMode: MonthAppointmentDisplayMode.appointment,
),
);
}

void onCalendarViewChange(String value) {
if (value == 'Day') {
_calendarView = CalendarView.day;
} else if (value == 'Week') {
_calendarView = CalendarView.week;
} else if (value == 'Work week') {
_calendarView = CalendarView.workWeek;
} else if (value == 'Month') {
_calendarView = CalendarView.month;
}
}

void onCalendarTapped(CalendarTapDetails details) {
if (details.targetElement != CalendarElement.calendarCell) {
return;
}
if (_calendarView == CalendarView.month) {
setState(() {
_calendarView = CalendarView.day;
});
}
}
}

List getMeetingDetails() {
final List _meetings = [];
_meetings.add(Meeting(
from: DateTime.now(),
to: DateTime.now().add(const Duration(hours: 1)),
eventName: "Test Meeting",
background: Colors.grey,
isAllDay: false,
));

return _meetings;
}

class Meeting {
Meeting({
this.eventName,
@required this.from,
@required this.to,
this.background,
this.isAllDay,
});

final String eventName;
final DateTime from;
final DateTime to;
final Color background;
final bool isAllDay;
}

class MeetingDataSource extends CalendarDataSource {
MeetingDataSource(List source) {
appointments = source;
}

@OverRide
DateTime getStartTime(int index) => appointments[index].from;

@OverRide
DateTime getEndTime(int index) => appointments[index].to;

@OverRide
String getSubject(int index) => appointments[index].eventName;

@OverRide
Color getColor(int index) => appointments[index].background;

@OverRide
bool isAllDay(int index) => appointments[index].isAllDay;
}

Hi, is there a way to select a data point with the index of dataSource and not with index of visible points?

Thank you.

I wonder why we don't permit an custom widget for agenda cell in calendar (month view). It's so restrictive now. Please add more this support beside wonderful things at present of calendar