CupertinoPopoverDirection.right 方向设置 popoverWidth 会报错

[z234009184]

如题

在设置气泡方向为 CupertinoPopoverDirection.right 方向时设置 popoverWidth 会报错

详细报错信息如下

When the exception was thrown, this was the stack: 
#0      RenderBox.debugAssertDoesMeetConstraints.<anonymous closure> (package:flutter/src/rendering/box.dart:2069:9)
#1      RenderBox.debugAssertDoesMeetConstraints (package:flutter/src/rendering/box.dart:2128:6)
#2      RenderBox.size=.<anonymous closure> (package:flutter/src/rendering/box.dart:1846:7)
#3      RenderBox.size= (package:flutter/src/rendering/box.dart:1848:6)
#4      _CupertionPopoverContextRenderObject.performLayout (package:cool_ui/widgets/popover/cupertino_popover.dart:474:7)
...
The following RenderObject was being processed when the exception was fired: _CupertionPopoverContextRenderObject#b9408 relayoutBoundary=up2 NEEDS-LAYOUT
...  needs compositing
...  parentData: offset=Offset(584.0, 244.0) (can use size)
...  constraints: BoxConstraints(w=190.0, 64.0<=h<=72.0)
...  size: Size(198.0, 72.0)
RenderObject: _CupertionPopoverContextRenderObject#b9408 relayoutBoundary=up2 NEEDS-LAYOUT
  needs compositing
  parentData: offset=Offset(584.0, 244.0) (can use size)
  constraints: BoxConstraints(w=190.0, 64.0<=h<=72.0)
  size: Size(198.0, 72.0)
...  child: RenderCustomPaint#a5366 relayoutBoundary=up3
...    needs compositing
...    parentData: offset=Offset(0.0, 0.0) (can use size)
...    constraints: BoxConstraints(w=190.0, 64.0<=h<=72.0)
...    size: Size(190.0, 72.0)
...    child: _RenderInkFeatures#36a74 relayoutBoundary=up4
...      needs compositing
...      parentData: <none> (can use size)
...      constraints: BoxConstraints(w=190.0, 64.0<=h<=72.0)
...      size: Size(190.0, 72.0)
...      child: RenderRepaintBoundary#bfc1f relayoutBoundary=up5
...        needs compositing
...        parentData: <none> (can use size)
...        constraints: BoxConstraints(w=190.0, 64.0<=h<=72.0)
...        layer: OffsetLayer#12c79
...          engine layer: OffsetEngineLayer#5d035
...          offset: Offset(584.0, 244.0)
...        size: Size(190.0, 72.0)
...        metrics: 50.0% useful (1 bad vs 1 good)
...        diagnosis: insufficient data to draw conclusion (less than five repaints)
...        child: RenderCustomPaint#fce3e relayoutBoundary=up6
...          needs compositing
...          parentData: <none> (can use size)
...          constraints: BoxConstraints(w=190.0, 64.0<=h<=72.0)
...          size: Size(190.0, 72.0)
════════════════════════════════════════════════════════════════════════════════════════════════════

Another exception was thrown: _CupertionPopoverContextRenderObject does not meet its constraints.

════════ Exception caught by rendering library ═════════════════════════════════════════════════════
_CupertionPopoverContextRenderObject does not meet its constraints.
════════════════════════════════════════════════════════════════════════════════════════════════════