imageSpan static method
处理文本消息中的表情
Implementation
static WidgetSpan? imageSpan(String? tag) {
var item = EmojiUtil.instance.emojiMap[tag ?? ''];
if (item == null) return null;
String source = item.source;
return WidgetSpan(
child: Image.asset(source, package: kPackage, height: 24, width: 24),
);
}