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| OverlayEntry entry; entry = OverlayEntry( builder: (BuildContext context) { return Positioned( top: 120, left: MediaQuery.of(context).size.width / 2 - 120, width: 240, height: 180, child: Card( clipBehavior: Clip.antiAliasWithSaveLayer, shape: RoundedRectangleBorder( borderRadius: BorderRadius.all(Radius.circular(12))), color: Colors.white, child: ListView( shrinkWrap: false, padding: const EdgeInsets.all(0), physics: ScrollPhysics(), children: <Widget>[ FlatButton( onPressed: () { entry.remove(); }, child: Row( mainAxisSize: MainAxisSize.max, children: <Widget>[ Text( '全部', style: TextStyle( fontSize: 16,), ) ], ) ), Divider( height: 2, ), FlatButton( onPressed: () { entry.remove(); }, child: Row( mainAxisSize: MainAxisSize.max, children: <Widget>[ Text( '原创', style: TextStyle( fontSize: 16,), ) ], ) ), Divider( height: 2, ), FlatButton( onPressed: () { entry.remove(); }, child: Row( mainAxisSize: MainAxisSize.max, children: <Widget>[ Text( '收藏', style: TextStyle( fontSize: 16,), ) ], ) ), Divider( height: 2, ), FlatButton( onPressed: () { entry.remove(); }, child: Row( mainAxisSize: MainAxisSize.max, children: <Widget>[ Text( '好友圈', style: TextStyle( fontSize: 16,), ) ], ) ), Divider( height: 2, ), ], ), ), ); }, ); Overlay.of(viewService.context).insert(entry);
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