The argument type 'String?' can't be assigned to the parameter type 'String'. -Flutter

Question

This is my my code and null safety is enabled. I am not able to understand why I am facing the mentioned error where I am storing the value for "videoId".

Also, what can be another way to store this value for using later as I don't think that its the best way? P.S.- It works when null safety is disabled.

better to place your code inside a 'code sample' tag rather than a image. This will help others re-run your code — rosh-dev851, Oct 31 '21 at 13:26

score 0 · Answer 1 · answered Oct 31 '21 at 12:58

0

First don't assign a value for your var videoId inside the player initialization! before initializing the controller Add:

videoId = ....;

Then

YoutubePlayerController(
      initialVideoId:videoId ...);

if your widget.youtubelink is a String, assign it to your videoId without calling convert uriToId

answered Oct 31 '21 at 12:58

Reham Alraee

139
8

I did that but now facing another error- The instance member 'widget' can't be accessed in an initializer. Try replacing the reference to the instance member with a different expression. – Shashwat Singh Oct 31 '21 at 16:20
Yeah, write this.widget.youtubeLink -> access your widget using this – Reham Alraee Nov 01 '21 at 05:24

score 0 · Answer 2 · answered Jan 01 '23 at 06:18

Try in this way

YoutubePlayer(
  controller: _youtubePlayerController = 
     YoutubePlayerController(
      initialVideoId: YoutubePlayer.convertUrlToId(Links!).toString(),

         flags: YoutubePlayerFlags(
            autoPlay: false,
           ),
     ),

The argument type 'String?' can't be assigned to the parameter type 'String'. -Flutter

2 Answers2