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fix:#95 with null-safety #115

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Merged
sbis04 merged 1 commit into from
Jul 1, 2021
Merged

fix:#95 with null-safety #115

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10 changes: 10 additions & 0 deletions lib/src/thumbnail_viewer.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,9 @@ class ThumbnailViewer extends StatelessWidget {

List<Uint8List?> _byteList = [];

// the cache of last thumbnail
Uint8List? _lastBytes;

for (int i = 1; i <= numberOfThumbnails; i++) {
Uint8List? _bytes;
_bytes = await VideoThumbnail.thumbnailData(
Expand All @@ -39,6 +42,13 @@ class ThumbnailViewer extends StatelessWidget {
quality: quality,
);

// if current thumbnail is null use the last thumbnail
if (_bytes != null) {
_lastBytes = _bytes;
} else {
_bytes = _lastBytes;
}

_byteList.add(_bytes);

yield _byteList;
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