Description
更新了flutter后footer出现错误：SliverGeometry has a paintOffset that exceeds the remainingPaintExtent from the constraints.
════════ Exception caught by rendering library ═════════════════════════════════
The following assertion was thrown during performLayout():
SliverGeometry has a paintOffset that exceeds the remainingPaintExtent from the constraints.
The render object whose geometry violates the constraints is the following: RenderSliverLoading#36d29 relayoutBoundary=up1 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
The remainingPaintExtent is 237.0, but the paintOrigin + paintExtent is 292.0.
The paintOrigin and paintExtent must cause the child sliver to paint within the viewport, and so cannot exceed the remainingPaintExtent.
The relevant error-causing widget was
CustomFooter
lib/forum_main.dart:39
When the exception was thrown, this was the stack
#0 RenderSliver.debugAssertDoesMeetConstraints.
package:flutter/…/rendering/sliver.dart:1215
#1 RenderSliver.debugAssertDoesMeetConstraints
package:flutter/…/rendering/sliver.dart:1229
#2 RenderObject.layout.
package:flutter/…/rendering/object.dart:1770
#3 RenderObject.layout
package:flutter/…/rendering/object.dart:1772
#4 RenderViewportBase.layoutChildSequence
package:flutter/…/rendering/viewport.dart:451
...
The following RenderObject was being processed when the exception was fired: RenderSliverLoading#36d29 relayoutBoundary=up1 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
RenderObject: RenderSliverLoading#36d29 relayoutBoundary=up1 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
parentData: paintOffset=Offset(0.0, 0.0) (can use size)
constraints: SliverConstraints(AxisDirection.down, GrowthDirection.forward, ScrollDirection.idle, scrollOffset: 0.0, remainingPaintExtent: 237.0, crossAxisExtent: 375.0, crossAxisDirection: AxisDirection.right, viewportMainAxisExtent: 667.0, remainingCacheExtent: 487.0 cacheOrigin: 0.0 )
geometry: SliverGeometry(scrollExtent: 0.0, paintExtent: 55.0, paintOrigin: 237.0, maxPaintExtent: 55.0, hasVisualOverflow: true, cacheExtent: 55.0)
scrollExtent: 0.0
paintExtent: 55.0
paintOrigin: 237.0
maxPaintExtent: 55.0
hasVisualOverflow: true
cacheExtent: 55.0
child: _RenderLayoutBuilder#47e10 relayoutBoundary=up2 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
parentData: paintOffset=Offset(0.0, -0.0) (can use size)
constraints: BoxConstraints(w=375.0, 0.0<=h<=Infinity)
size: Size(375.0, 55.0)
child: RenderSemanticsGestureHandler#d6f37 relayoutBoundary=up3 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
parentData: offset=Offset(0.0, 0.0) (can use size)
constraints: BoxConstraints(w=375.0, 0.0<=h<=Infinity)
size: Size(375.0, 55.0)
gestures: tap
child: RenderPointerListener#3324b relayoutBoundary=up4 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
parentData: (can use size)
constraints: BoxConstraints(w=375.0, 0.0<=h<=Infinity)
size: Size(375.0, 55.0)
behavior: opaque
listeners: down
child: RenderConstrainedBox#ad0f9 relayoutBoundary=up5 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
parentData: (can use size)
constraints: BoxConstraints(w=375.0, 0.0<=h<=Infinity)
size: Size(375.0, 55.0)
additionalConstraints: BoxConstraints(0.0<=w<=Infinity, h=55.0)
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