sinpk166807

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<div><span style="color: #569cd6;">import</span> <span style="color: #ce9178;">'package:cloud_firestore/cloud_firestore.dart'</span>;</div>
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<div><span style="color: #569cd6;">class</span> <span style="color: #4ec9b0;">Movie</span> {</div>
<div><span style="color: #569cd6;">final</span> <span style="color: #4ec9b0;">String</span> <span style="color: #9cdcfe;">title</span>;</div>
<div><span style="color: #569cd6;">final</span> <span style="color: #4ec9b0;">String</span> <span style="color: #9cdcfe;">keyword</span>;</div>
<div><span style="color: #569cd6;">final</span> <span style="color: #4ec9b0;">String</span> <span style="color: #9cdcfe;">poster</span>;</div>
<div><span style="color: #569cd6;">final</span> <span style="color: #4ec9b0;">bool</span> <span style="color: #9cdcfe;">like</span>;</div>
<div><span style="color: #569cd6;">final</span> <span style="color: #4ec9b0;">DocumentReference</span>? <span style="color: #9cdcfe;">reference</span>;</div>
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<div><span style="color: #4ec9b0;">Movie</span>.<span style="color: #dcdcaa;">fromMap</span>(<span style="color: #4ec9b0;">Map</span><<span style="color: #4ec9b0;">String</span>, <span style="color: #4ec9b0;">dynamic</span>> <span style="color: #9cdcfe;">map</span>, {<span style="color: #569cd6;">this</span>.<span style="color: #9cdcfe;">reference</span>})</div>
<div>: <span style="color: #9cdcfe;">title</span> = <span style="color: #9cdcfe;">map</span>[<span style="color: #ce9178;">'title'</span>],</div>
<div><span style="color: #9cdcfe;">keyword</span> = <span style="color: #9cdcfe;">map</span>[<span style="color: #ce9178;">'keyword'</span>],</div>
<div><span style="color: #9cdcfe;">poster</span> = <span style="color: #9cdcfe;">map</span>[<span style="color: #ce9178;">'poster'</span>],</div>
<div><span style="color: #9cdcfe;">like</span> = <span style="color: #9cdcfe;">map</span>[<span style="color: #ce9178;">'like'</span>];</div>
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<div><span style="color: #4ec9b0;">Movie</span>.<span style="color: #dcdcaa;">fromSnapshow</span>(<span style="color: #4ec9b0;">DocumentSnapshot</span> <span style="color: #9cdcfe;">snapshot</span>)</div>
<div>: <span style="color: #569cd6;">this</span>.<span style="color: #dcdcaa;">fromMap</span>(<span style="color: #9cdcfe;">snapshot</span>.<span style="color: #dcdcaa;">data</span>() <span style="color: #569cd6;">as</span> <span style="color: #4ec9b0;">Map</span><<span style="color: #4ec9b0;">String</span>, <span style="color: #4ec9b0;">dynamic</span>>,</div>
<div><span style="color: #9cdcfe;">reference</span>: <span style="color: #9cdcfe;">snapshot</span>.<span style="color: #9cdcfe;">reference</span>);</div>
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<div><span style="color: #9cdcfe;">@</span><span style="color: #9cdcfe;">override</span></div>
<div><span style="color: #4ec9b0;">String</span> <span style="color: #dcdcaa;">toString</span>() => <span style="color: #ce9178;">'Movice<</span>$<span style="color: #9cdcfe;">title</span><span style="color: #ce9178;">:</span>$<span style="color: #9cdcfe;">keyword</span><span style="color: #ce9178;">>'</span>;</div>
<div>}</div>
</div>

snapshot.data 오류

<p>이렇게 사용하시면 됩니다.</p>
<p>&nbsp;</p>
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<div><span style="color: #c792ea;">class</span> <span style="color: #ffcb6b;">CarouselImage</span> <span style="color: #c792ea;">extends</span> <span style="color: #ffcb6b;">StatefulWidget</span> {</div>
<div>&nbsp; <span style="color: #c792ea;">final</span> <span style="color: #ffcb6b;">List</span><<span style="color: #ffcb6b;">Movie</span>> movies<span style="color: #89ddff;">;</span></div>
<div>&nbsp; <span style="color: #ffcb6b;">CarouselImage</span>({<span style="color: #c792ea;">required</span> <span style="color: #ff5370; font-style: italic;">this</span><span style="color: #89ddff;">.</span>movies})<span style="color: #89ddff;">;</span></div>
<div>&nbsp; <span style="color: #ffcb6b;">_CarouselImageState</span> <span style="color: #82aaff;">createState</span>() <span style="color: #89ddff;">=></span> <span style="color: #ffcb6b;">_CarouselImageState</span>()<span style="color: #89ddff;">;</span></div>
<div>}</div>
</div>

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