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地豆 提交于 2019-12-10 18:03 +08:00 . 初始化1.9
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<title>isChecked property - SemanticsConfiguration class - semantics library - Dart API</title>
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<li><a href="index.html">flutter</a></li>
<li><a href="semantics/semantics-library.html">semantics</a></li>
<li><a href="semantics/SemanticsConfiguration-class.html">SemanticsConfiguration</a></li>
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<h5>SemanticsConfiguration class</h5>
<ol>
<li class="section-title"><a href="semantics/SemanticsConfiguration-class.html#constructors">Constructors</a></li>
<li><a href="semantics/SemanticsConfiguration/SemanticsConfiguration.html">SemanticsConfiguration</a></li>
<li class="section-title">
<a href="semantics/SemanticsConfiguration-class.html#instance-properties">Properties</a>
</li>
<li><a href="semantics/SemanticsConfiguration/customSemanticsActions.html">customSemanticsActions</a></li>
<li><a href="semantics/SemanticsConfiguration/decreasedValue.html">decreasedValue</a></li>
<li><a href="semantics/SemanticsConfiguration/elevation.html">elevation</a></li>
<li><a href="semantics/SemanticsConfiguration/explicitChildNodes.html">explicitChildNodes</a></li>
<li><a href="semantics/SemanticsConfiguration/hasBeenAnnotated.html">hasBeenAnnotated</a></li>
<li><a href="semantics/SemanticsConfiguration/hasImplicitScrolling.html">hasImplicitScrolling</a></li>
<li><a href="semantics/SemanticsConfiguration/hint.html">hint</a></li>
<li><a href="semantics/SemanticsConfiguration/hintOverrides.html">hintOverrides</a></li>
<li><a href="semantics/SemanticsConfiguration/increasedValue.html">increasedValue</a></li>
<li><a href="semantics/SemanticsConfiguration/indexInParent.html">indexInParent</a></li>
<li><a href="semantics/SemanticsConfiguration/isBlockingSemanticsOfPreviouslyPaintedNodes.html">isBlockingSemanticsOfPreviouslyPaintedNodes</a></li>
<li><a href="semantics/SemanticsConfiguration/isButton.html">isButton</a></li>
<li><a href="semantics/SemanticsConfiguration/isChecked.html">isChecked</a></li>
<li><a href="semantics/SemanticsConfiguration/isEnabled.html">isEnabled</a></li>
<li><a href="semantics/SemanticsConfiguration/isFocused.html">isFocused</a></li>
<li><a href="semantics/SemanticsConfiguration/isHeader.html">isHeader</a></li>
<li><a href="semantics/SemanticsConfiguration/isHidden.html">isHidden</a></li>
<li><a href="semantics/SemanticsConfiguration/isImage.html">isImage</a></li>
<li><a href="semantics/SemanticsConfiguration/isInMutuallyExclusiveGroup.html">isInMutuallyExclusiveGroup</a></li>
<li><a href="semantics/SemanticsConfiguration/isMergingSemanticsOfDescendants.html">isMergingSemanticsOfDescendants</a></li>
<li><a href="semantics/SemanticsConfiguration/isMultiline.html">isMultiline</a></li>
<li><a href="semantics/SemanticsConfiguration/isObscured.html">isObscured</a></li>
<li><a href="semantics/SemanticsConfiguration/isReadOnly.html">isReadOnly</a></li>
<li><a href="semantics/SemanticsConfiguration/isSelected.html">isSelected</a></li>
<li><a href="semantics/SemanticsConfiguration/isSemanticBoundary.html">isSemanticBoundary</a></li>
<li><a href="semantics/SemanticsConfiguration/isTextField.html">isTextField</a></li>
<li><a href="semantics/SemanticsConfiguration/isToggled.html">isToggled</a></li>
<li><a href="semantics/SemanticsConfiguration/label.html">label</a></li>
<li><a href="semantics/SemanticsConfiguration/liveRegion.html">liveRegion</a></li>
<li><a href="semantics/SemanticsConfiguration/namesRoute.html">namesRoute</a></li>
<li><a href="semantics/SemanticsConfiguration/onCopy.html">onCopy</a></li>
<li><a href="semantics/SemanticsConfiguration/onCut.html">onCut</a></li>
<li><a href="semantics/SemanticsConfiguration/onDecrease.html">onDecrease</a></li>
<li><a href="semantics/SemanticsConfiguration/onDidGainAccessibilityFocus.html">onDidGainAccessibilityFocus</a></li>
<li><a href="semantics/SemanticsConfiguration/onDidLoseAccessibilityFocus.html">onDidLoseAccessibilityFocus</a></li>
<li><a href="semantics/SemanticsConfiguration/onDismiss.html">onDismiss</a></li>
<li><a href="semantics/SemanticsConfiguration/onIncrease.html">onIncrease</a></li>
<li><a href="semantics/SemanticsConfiguration/onLongPress.html">onLongPress</a></li>
<li><a href="semantics/SemanticsConfiguration/onMoveCursorBackwardByCharacter.html">onMoveCursorBackwardByCharacter</a></li>
<li><a href="semantics/SemanticsConfiguration/onMoveCursorBackwardByWord.html">onMoveCursorBackwardByWord</a></li>
<li><a href="semantics/SemanticsConfiguration/onMoveCursorForwardByCharacter.html">onMoveCursorForwardByCharacter</a></li>
<li><a href="semantics/SemanticsConfiguration/onMoveCursorForwardByWord.html">onMoveCursorForwardByWord</a></li>
<li><a href="semantics/SemanticsConfiguration/onPaste.html">onPaste</a></li>
<li><a href="semantics/SemanticsConfiguration/onScrollDown.html">onScrollDown</a></li>
<li><a href="semantics/SemanticsConfiguration/onScrollLeft.html">onScrollLeft</a></li>
<li><a href="semantics/SemanticsConfiguration/onScrollRight.html">onScrollRight</a></li>
<li><a href="semantics/SemanticsConfiguration/onScrollUp.html">onScrollUp</a></li>
<li><a href="semantics/SemanticsConfiguration/onSetSelection.html">onSetSelection</a></li>
<li><a href="semantics/SemanticsConfiguration/onShowOnScreen.html">onShowOnScreen</a></li>
<li><a href="semantics/SemanticsConfiguration/onTap.html">onTap</a></li>
<li><a href="semantics/SemanticsConfiguration/platformViewId.html">platformViewId</a></li>
<li><a href="semantics/SemanticsConfiguration/scopesRoute.html">scopesRoute</a></li>
<li><a href="semantics/SemanticsConfiguration/scrollChildCount.html">scrollChildCount</a></li>
<li><a href="semantics/SemanticsConfiguration/scrollExtentMax.html">scrollExtentMax</a></li>
<li><a href="semantics/SemanticsConfiguration/scrollExtentMin.html">scrollExtentMin</a></li>
<li><a href="semantics/SemanticsConfiguration/scrollIndex.html">scrollIndex</a></li>
<li><a href="semantics/SemanticsConfiguration/scrollPosition.html">scrollPosition</a></li>
<li><a href="semantics/SemanticsConfiguration/sortKey.html">sortKey</a></li>
<li><a href="semantics/SemanticsConfiguration/tagsForChildren.html">tagsForChildren</a></li>
<li><a href="semantics/SemanticsConfiguration/textDirection.html">textDirection</a></li>
<li><a href="semantics/SemanticsConfiguration/textSelection.html">textSelection</a></li>
<li><a href="semantics/SemanticsConfiguration/thickness.html">thickness</a></li>
<li><a href="semantics/SemanticsConfiguration/value.html">value</a></li>
<li class="inherited"><a href="dart-core/Object/hashCode.html">hashCode</a></li>
<li class="inherited"><a href="dart-core/Object/runtimeType.html">runtimeType</a></li>
<li class="section-title"><a href="semantics/SemanticsConfiguration-class.html#instance-methods">Methods</a></li>
<li><a href="semantics/SemanticsConfiguration/absorb.html">absorb</a></li>
<li><a href="semantics/SemanticsConfiguration/addTagForChildren.html">addTagForChildren</a></li>
<li><a href="semantics/SemanticsConfiguration/copy.html">copy</a></li>
<li><a href="semantics/SemanticsConfiguration/getActionHandler.html">getActionHandler</a></li>
<li><a href="semantics/SemanticsConfiguration/isCompatibleWith.html">isCompatibleWith</a></li>
<li class="inherited"><a href="dart-core/Object/noSuchMethod.html">noSuchMethod</a></li>
<li class="inherited"><a href="dart-core/Object/toString.html">toString</a></li>
<li class="section-title inherited"><a href="semantics/SemanticsConfiguration-class.html#operators">Operators</a></li>
<li class="inherited"><a href="dart-core/Object/operator_equals.html">operator ==</a></li>
</ol>
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<div><h1><span class="kind-property">isChecked</span> property</h1></div>
<section id="getter">
<section class="multi-line-signature">
<span class="returntype"><a href="dart-core/bool-class.html">bool</a></span>
<span class="name ">isChecked</span>
</section>
<section class="desc markdown">
<p>If this node has Boolean state that can be controlled by the user, whether
that state is checked or unchecked, corresponding to true and false,
respectively.</p>
<p>Do not call the setter for this field if the owning <a href="rendering/RenderObject-class.html">RenderObject</a> doesn't
have checked/unchecked state that can be controlled by the user.</p>
<p>The getter returns null if the owning <a href="rendering/RenderObject-class.html">RenderObject</a> does not have
checked/unchecked state.</p>
</section>
<section class="summary source-code" id="source">
<h2><span>Implementation</span></h2>
<pre class="language-dart"><code class="language-dart">bool get isChecked =&gt; _hasFlag(SemanticsFlag.hasCheckedState) ? _hasFlag(SemanticsFlag.isChecked) : null;</code></pre>
</section>
</section>
<section id="setter">
<section class="multi-line-signature">
<span class="returntype">void</span>
<span class="name ">isChecked=</span>
<span class="signature">(<wbr><span class="parameter" id="isChecked=-param-value"><span class="type-annotation"><a href="dart-core/bool-class.html">bool</a></span> <span class="parameter-name">value</span></span>)</span>
</section>
<section class="summary source-code" id="source">
<h2><span>Implementation</span></h2>
<pre class="language-dart"><code class="language-dart">set isChecked(bool value) {
_setFlag(SemanticsFlag.hasCheckedState, true);
_setFlag(SemanticsFlag.isChecked, value);
}</code></pre>
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