Problems with using RichText in the Web #62749
Description
Column( children: <Widget>[ RichText( text: WidgetSpan( child: Container( child: Text("text"), ), ), ), ], );
flutter --version
Flutter 1.21.0-6.0.pre.141 • channel master •
https://github.com/flutter/flutter.git
Framework • revision c748f1a7aa (2 days ago) • 2020-07-31 17:45:18 -0700
Engine • revision 280bbfc763
Tools • Dart 2.10.0 (build 2.10.0-2.0.dev bd528bfbd6)
Logs
════════ Exception caught by rendering library ═════════════════════════════════════════════════════
The following LateInitializationErrorImpl was thrown during performLayout():
LateInitializationError: Field '_placeholderCount' has not been initialized.
The relevant error-causing widget was:
RichText file:///Users/User/{MyAPP}/lib/mine_exam/mine_exam.dart:89:43
When the exception was thrown, this was the stack:
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/errors.dart 212:49 throw_
lib/_engine/engine/text/paragraph.dart 1047:12 get [_placeholderCount]
lib/_engine/engine/text/paragraph.dart 1046:31 get placeholderCount
packages/flutter/src/widgets/widget_span.dart 110:19 build
packages/flutter/src/painting/text_painter.dart 560:13 layout
...
The following RenderObject was being processed when the exception was fired: RenderParagraph#f79ab relayoutBoundary=up3 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=506.0, h=100.0)
... size: MISSING
... textAlign: start
... textDirection: ltr
... softWrap: wrapping at box width
... overflow: clip
... locale: en_US
... maxLines: unlimited
text: WidgetSpan#4ddce
alignment: bottom
RenderObject: RenderParagraph#f79ab relayoutBoundary=up3 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
parentData: <none> (can use size)
constraints: BoxConstraints(0.0<=w<=506.0, h=100.0)
size: MISSING
textAlign: start
textDirection: ltr
softWrap: wrapping at box width
overflow: clip
locale: en_US
maxLines: unlimited
text: WidgetSpan#4ddce
alignment: bottom
════════════════════════════════════════════════════════════════════════════════════════════════════
════════ Exception caught by rendering library ═════════════════════════════════════════════════════
Assertion failed: file:///Users/User/flutter/packages/flutter/lib/src/rendering/box.dart:1713:12
hasSize
"RenderBox was not laid out: RenderParagraph#f79ab relayoutBoundary=up3 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE"
The relevant error-causing widget was:
Container file:///Users/User/Documents/{MyAPP}/lib/mine_exam/mine_exam.dart:89:13
════════════════════════════════════════════════════════════════════════════════════════════════════
════════ Exception caught by rendering library ═════════════════════════════════════════════════════
Assertion failed: file:///Users/User/flutter/packages/flutter/lib/src/rendering/box.dart:1713:12
hasSize
"RenderBox was not laid out: RenderConstrainedBox#128f1 relayoutBoundary=up2 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE"
The relevant error-causing widget was:
Column file:///Users/User/{MyAPP}/lib/mine_exam/mine_exam.dart:64:15
════════════════════════════════════════════════════════════════════════════════════════════════════
════════ Exception caught by rendering library ═════════════════════════════════════════════════════
Assertion failed: file:///Users/User/flutter/packages/flutter/lib/src/rendering/box.dart:1713:12
hasSize
"RenderBox was not laid out: RenderFlex#983ac relayoutBoundary=up1 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE"
The relevant error-causing widget was:
Scaffold file:///Users/User/{MyAPP}/lib/mine_exam/mine_exam.dart:61:12
════════════════════════════════════════════════════════════════════════════════════════════════════
════════ Exception caught by rendering library ═════════════════════════════════════════════════════
'<Unexpected Null Value>'
method not found
Receiver: null
Arguments: []
The relevant error-causing widget was:
Column file:///Users/User/{MyAPP}/lib/mine_exam/mine_exam.dart:64:15
════════════════════════════════════════════════════════════════════════════════════════════════════
════════ Exception caught by scheduler library ═════════════════════════════════════════════════════
Assertion failed: file:///Users/User/flutter/packages/flutter/lib/src/rendering/box.dart:1713:12
hasSize
"RenderBox was not laid out: RenderPointerListener#6763f NEEDS-LAYOUT NEEDS-PAINT"
════════════════════════════════════════════════════════════════════════════════════════════════════
════════ Exception caught by scheduler library ═════════════════════════════════════════════════════
Assertion failed: file:///Users/User/flutter/packages/flutter/lib/src/rendering/mouse_tracking.dart:354:12
!_debugDuringDeviceUpdate
is not true
════════════════════════════════════════════════════════════════════════════════════════════════════