When adding/deleting pictures in the folder, generate a thumbnail in advance, and then load it directly when needed.
p.s. The avatar of the WeChat group is pre-generated when the group is created.
p.p.s. If you generate all the pictures into a thumbnail first, if you do it incorrectly, it will directly cause OOM. If the number is large, you can only do it one by one....
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When adding/deleting pictures in the folder, generate a thumbnail in advance, and then load it directly when needed.
p.s. The avatar of the WeChat group is pre-generated when the group is created.
p.p.s. If you generate all the pictures into a thumbnail first, if you do it incorrectly, it will directly cause OOM. If the number is large, you can only do it one by one....
MediaStore.Images.ThumbnailUtils can get thumbnails in bitmap format, which should solve your problem