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@@ -187,7 +187,7 @@
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<h3><a class="anchor" aria-hidden="true" id="onaccessibilityescape-ios"></a><a href="#onaccessibilityescape-ios" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>onAccessibilityEscape (iOS)</h3>
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<p>Assign this property to a custom function which will be called when someone performs the "escape" gesture, which is a two finger Z shaped gesture. An escape function should move back hierarchically in the user interface. This can mean moving up or back in a navigation hierarchy or dismissing a modal user interface. If the selected element does not have an <code>onAccessibilityEscape</code> function, the system will attempt to traverse up the view hierarchy until it finds a view that does or bonk to indicate it was unable to find one.</p>
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<h3><a class="anchor" aria-hidden="true" id="accessibilityliveregion-android"></a><a href="#accessibilityliveregion-android" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>accessibilityLiveRegion (Android)</h3>
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<p>When components dynamically change, we want TalkBack to alert the end user. This is made possible by the ‘accessibilityLiveRegion’ property. It can be set to ‘none’, ‘polite’ and ‘assertive’:</p>
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<p>When components dynamically change, we want TalkBack to alert the end user. This is made possible by the <code>accessibilityLiveRegion</code> property. It can be set to <code>none</code>, <code>polite</code> and <code>assertive</code>:</p>
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<ul>
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<li><strong>none</strong> Accessibility services should not announce changes to this view.</li>
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<li><strong>polite</strong> Accessibility services should announce changes to this view.</li>
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@@ -202,16 +202,16 @@
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Clicked </span><span class="token punctuation">{</span><span class="token keyword">this</span><span class="token punctuation">.</span>state<span class="token punctuation">.</span>count<span class="token punctuation">}</span><span class="token plain-text"> times
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</span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span><span class="token class-name">Text</span></span><span class="token punctuation">></span></span>
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</code></pre>
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<p>In the above example method _addOne changes the state.count variable. As soon as an end user clicks the TouchableWithoutFeedback, TalkBack reads text in the Text view because of its 'accessibilityLiveRegion=”polite”' property.</p>
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<p>In the above example method _addOne changes the state.count variable. As soon as an end user clicks the TouchableWithoutFeedback, TalkBack reads text in the Text view because of its <code>accessibilityLiveRegion=”polite”</code> property.</p>
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<h3><a class="anchor" aria-hidden="true" id="importantforaccessibility-android"></a><a href="#importantforaccessibility-android" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>importantForAccessibility (Android)</h3>
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<p>In the case of two overlapping UI components with the same parent, default accessibility focus can have unpredictable behavior. The ‘importantForAccessibility’ property will resolve this by controlling if a view fires accessibility events and if it is reported to accessibility services. It can be set to ‘auto’, ‘yes’, ‘no’ and ‘no-hide-descendants’ (the last value will force accessibility services to ignore the component and all of its children).</p>
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<p>In the case of two overlapping UI components with the same parent, default accessibility focus can have unpredictable behavior. The <code>importantForAccessibility</code> property will resolve this by controlling if a view fires accessibility events and if it is reported to accessibility services. It can be set to <code>auto</code>, <code>yes</code>, <code>no</code> and <code>no-hide-descendants</code> (the last value will force accessibility services to ignore the component and all of its children).</p>
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<pre><code class="hljs css language-jsx"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span><span class="token class-name">View</span></span> <span class="token attr-name">style</span><span class="token script language-javascript"><span class="token script-punctuation punctuation">=</span><span class="token punctuation">{</span>styles<span class="token punctuation">.</span>container<span class="token punctuation">}</span></span><span class="token punctuation">></span></span><span class="token plain-text">
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</span><span class="token tag"><span class="token tag"><span class="token punctuation"><</span><span class="token class-name">View</span></span> <span class="token attr-name">style</span><span class="token script language-javascript"><span class="token script-punctuation punctuation">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>position<span class="token punctuation">:</span> <span class="token string">'absolute'</span><span class="token punctuation">,</span> left<span class="token punctuation">:</span> <span class="token number">10</span><span class="token punctuation">,</span> top<span class="token punctuation">:</span> <span class="token number">10</span><span class="token punctuation">,</span> right<span class="token punctuation">:</span> <span class="token number">10</span><span class="token punctuation">,</span> height<span class="token punctuation">:</span> <span class="token number">100</span><span class="token punctuation">,</span>
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backgroundColor<span class="token punctuation">:</span> <span class="token string">'green'</span><span class="token punctuation">}</span><span class="token punctuation">}</span></span> <span class="token attr-name">importantForAccessibility</span><span class="token attr-value"><span class="token punctuation">=</span>”yes”</span><span class="token punctuation">></span></span><span class="token plain-text">
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backgroundColor<span class="token punctuation">:</span> <span class="token string">'green'</span><span class="token punctuation">}</span><span class="token punctuation">}</span></span> <span class="token attr-name">importantForAccessibility</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>yes<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token plain-text">
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</span><span class="token tag"><span class="token tag"><span class="token punctuation"><</span><span class="token class-name">Text</span></span><span class="token punctuation">></span></span><span class="token plain-text"> First layout </span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span><span class="token class-name">Text</span></span><span class="token punctuation">></span></span><span class="token plain-text">
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</span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span><span class="token class-name">View</span></span><span class="token punctuation">></span></span><span class="token plain-text">
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</span><span class="token tag"><span class="token tag"><span class="token punctuation"><</span><span class="token class-name">View</span></span> <span class="token attr-name">style</span><span class="token script language-javascript"><span class="token script-punctuation punctuation">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>position<span class="token punctuation">:</span> <span class="token string">'absolute'</span><span class="token punctuation">,</span> left<span class="token punctuation">:</span> <span class="token number">10</span><span class="token punctuation">,</span> top<span class="token punctuation">:</span> <span class="token number">10</span><span class="token punctuation">,</span> right<span class="token punctuation">:</span> <span class="token number">10</span><span class="token punctuation">,</span> height<span class="token punctuation">:</span> <span class="token number">100</span><span class="token punctuation">,</span>
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backgroundColor<span class="token punctuation">:</span> <span class="token string">'yellow'</span><span class="token punctuation">}</span><span class="token punctuation">}</span></span> <span class="token attr-name">importantForAccessibility</span><span class="token attr-value"><span class="token punctuation">=</span>”no-hide-descendants”</span><span class="token punctuation">></span></span><span class="token plain-text">
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backgroundColor<span class="token punctuation">:</span> <span class="token string">'yellow'</span><span class="token punctuation">}</span><span class="token punctuation">}</span></span> <span class="token attr-name">importantForAccessibility</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>no-hide-descendants<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token plain-text">
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</span><span class="token tag"><span class="token tag"><span class="token punctuation"><</span><span class="token class-name">Text</span></span><span class="token punctuation">></span></span><span class="token plain-text"> Second layout </span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span><span class="token class-name">Text</span></span><span class="token punctuation">></span></span><span class="token plain-text">
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</span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span><span class="token class-name">View</span></span><span class="token punctuation">></span></span><span class="token plain-text">
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</span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span><span class="token class-name">View</span></span><span class="token punctuation">></span></span>
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@@ -187,7 +187,7 @@
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<h3><a class="anchor" aria-hidden="true" id="onaccessibilityescape-ios"></a><a href="#onaccessibilityescape-ios" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>onAccessibilityEscape (iOS)</h3>
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<p>Assign this property to a custom function which will be called when someone performs the "escape" gesture, which is a two finger Z shaped gesture. An escape function should move back hierarchically in the user interface. This can mean moving up or back in a navigation hierarchy or dismissing a modal user interface. If the selected element does not have an <code>onAccessibilityEscape</code> function, the system will attempt to traverse up the view hierarchy until it finds a view that does or bonk to indicate it was unable to find one.</p>
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<h3><a class="anchor" aria-hidden="true" id="accessibilityliveregion-android"></a><a href="#accessibilityliveregion-android" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>accessibilityLiveRegion (Android)</h3>
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<p>When components dynamically change, we want TalkBack to alert the end user. This is made possible by the ‘accessibilityLiveRegion’ property. It can be set to ‘none’, ‘polite’ and ‘assertive’:</p>
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<p>When components dynamically change, we want TalkBack to alert the end user. This is made possible by the <code>accessibilityLiveRegion</code> property. It can be set to <code>none</code>, <code>polite</code> and <code>assertive</code>:</p>
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<ul>
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<li><strong>none</strong> Accessibility services should not announce changes to this view.</li>
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<li><strong>polite</strong> Accessibility services should announce changes to this view.</li>
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@@ -202,16 +202,16 @@
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Clicked </span><span class="token punctuation">{</span><span class="token keyword">this</span><span class="token punctuation">.</span>state<span class="token punctuation">.</span>count<span class="token punctuation">}</span><span class="token plain-text"> times
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</span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span><span class="token class-name">Text</span></span><span class="token punctuation">></span></span>
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</code></pre>
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<p>In the above example method _addOne changes the state.count variable. As soon as an end user clicks the TouchableWithoutFeedback, TalkBack reads text in the Text view because of its 'accessibilityLiveRegion=”polite”' property.</p>
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<p>In the above example method _addOne changes the state.count variable. As soon as an end user clicks the TouchableWithoutFeedback, TalkBack reads text in the Text view because of its <code>accessibilityLiveRegion=”polite”</code> property.</p>
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<h3><a class="anchor" aria-hidden="true" id="importantforaccessibility-android"></a><a href="#importantforaccessibility-android" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>importantForAccessibility (Android)</h3>
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<p>In the case of two overlapping UI components with the same parent, default accessibility focus can have unpredictable behavior. The ‘importantForAccessibility’ property will resolve this by controlling if a view fires accessibility events and if it is reported to accessibility services. It can be set to ‘auto’, ‘yes’, ‘no’ and ‘no-hide-descendants’ (the last value will force accessibility services to ignore the component and all of its children).</p>
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<p>In the case of two overlapping UI components with the same parent, default accessibility focus can have unpredictable behavior. The <code>importantForAccessibility</code> property will resolve this by controlling if a view fires accessibility events and if it is reported to accessibility services. It can be set to <code>auto</code>, <code>yes</code>, <code>no</code> and <code>no-hide-descendants</code> (the last value will force accessibility services to ignore the component and all of its children).</p>
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<pre><code class="hljs css language-jsx"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span><span class="token class-name">View</span></span> <span class="token attr-name">style</span><span class="token script language-javascript"><span class="token script-punctuation punctuation">=</span><span class="token punctuation">{</span>styles<span class="token punctuation">.</span>container<span class="token punctuation">}</span></span><span class="token punctuation">></span></span><span class="token plain-text">
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</span><span class="token tag"><span class="token tag"><span class="token punctuation"><</span><span class="token class-name">View</span></span> <span class="token attr-name">style</span><span class="token script language-javascript"><span class="token script-punctuation punctuation">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>position<span class="token punctuation">:</span> <span class="token string">'absolute'</span><span class="token punctuation">,</span> left<span class="token punctuation">:</span> <span class="token number">10</span><span class="token punctuation">,</span> top<span class="token punctuation">:</span> <span class="token number">10</span><span class="token punctuation">,</span> right<span class="token punctuation">:</span> <span class="token number">10</span><span class="token punctuation">,</span> height<span class="token punctuation">:</span> <span class="token number">100</span><span class="token punctuation">,</span>
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backgroundColor<span class="token punctuation">:</span> <span class="token string">'green'</span><span class="token punctuation">}</span><span class="token punctuation">}</span></span> <span class="token attr-name">importantForAccessibility</span><span class="token attr-value"><span class="token punctuation">=</span>”yes”</span><span class="token punctuation">></span></span><span class="token plain-text">
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backgroundColor<span class="token punctuation">:</span> <span class="token string">'green'</span><span class="token punctuation">}</span><span class="token punctuation">}</span></span> <span class="token attr-name">importantForAccessibility</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>yes<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token plain-text">
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</span><span class="token tag"><span class="token tag"><span class="token punctuation"><</span><span class="token class-name">Text</span></span><span class="token punctuation">></span></span><span class="token plain-text"> First layout </span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span><span class="token class-name">Text</span></span><span class="token punctuation">></span></span><span class="token plain-text">
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</span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span><span class="token class-name">View</span></span><span class="token punctuation">></span></span><span class="token plain-text">
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</span><span class="token tag"><span class="token tag"><span class="token punctuation"><</span><span class="token class-name">View</span></span> <span class="token attr-name">style</span><span class="token script language-javascript"><span class="token script-punctuation punctuation">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>position<span class="token punctuation">:</span> <span class="token string">'absolute'</span><span class="token punctuation">,</span> left<span class="token punctuation">:</span> <span class="token number">10</span><span class="token punctuation">,</span> top<span class="token punctuation">:</span> <span class="token number">10</span><span class="token punctuation">,</span> right<span class="token punctuation">:</span> <span class="token number">10</span><span class="token punctuation">,</span> height<span class="token punctuation">:</span> <span class="token number">100</span><span class="token punctuation">,</span>
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backgroundColor<span class="token punctuation">:</span> <span class="token string">'yellow'</span><span class="token punctuation">}</span><span class="token punctuation">}</span></span> <span class="token attr-name">importantForAccessibility</span><span class="token attr-value"><span class="token punctuation">=</span>”no-hide-descendants”</span><span class="token punctuation">></span></span><span class="token plain-text">
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backgroundColor<span class="token punctuation">:</span> <span class="token string">'yellow'</span><span class="token punctuation">}</span><span class="token punctuation">}</span></span> <span class="token attr-name">importantForAccessibility</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>no-hide-descendants<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token plain-text">
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</span><span class="token tag"><span class="token tag"><span class="token punctuation"><</span><span class="token class-name">Text</span></span><span class="token punctuation">></span></span><span class="token plain-text"> Second layout </span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span><span class="token class-name">Text</span></span><span class="token punctuation">></span></span><span class="token plain-text">
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</span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span><span class="token class-name">View</span></span><span class="token punctuation">></span></span><span class="token plain-text">
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</span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span><span class="token class-name">View</span></span><span class="token punctuation">></span></span>
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Reference in New Issue
Block a user