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Clipboard.getData(Clipboard.kTextPlain).then((value){
print(value.text); //value is clipbarod data
});
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import 'package:flutter/services.dart';
ClipboardData data = ClipboardData(text: '<Text to copy goes here>');
await Clipboard.setData(data);
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import 'package:flutter/services.dart';
onTap: () {
Clipboard.setData(ClipboardData(text: "your text"));
},