VideoView 在Fragment中显示无法播放视频！

真诚求解！

问题描述：在mainActivity中正常播放，而在Fragment运行后模拟器弹窗显示视频无法播放。
Fragment代码
package com.example.myapplication.ui.dashboard;

import android.net.Uri;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.MediaController;
import android.widget.VideoView;

import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;
import com.example.myapplication.R;


public class DashboardFragment extends Fragment {
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater,
                             ViewGroup container, Bundle savedInstanceState) {
        View root=inflater.inflate(R.layout.fragment_dashboard,
                container, false);
        VideoView videoView=root.findViewById(R.id.videoView);
        videoView.setVideoURI(Uri.parse("android:resource://" +
                "com.example.graduation_project/ui/knowledgeFragment/"+R.raw.cognition));
        MediaController mediaController=new MediaController(getContext());
        videoView.setMediaController(mediaController);
        videoView.requestFocus();
        return root;
    }
}
Fragment(XML)代码

<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".ui.dashboard.DashboardFragment">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <VideoView
            android:id="@+id/videoView"
            android:layout_width="match_parent"
            android:layout_height="match_parent"/>
    LinearLayout>
androidx.constraintlayout.widget.ConstraintLayout>
报错内容
I/zygote: Do partial code cache collection, code=28KB, data=30KB
    After code cache collection, code=27KB, data=30KB
    Increasing code cache capacity to 128KB
W/MediaPlayer: Couldn't open android:resource://com.example.graduation_project/ui/knowledgeFragment/2131755008: java.io.FileNotFoundException: No content provider: android:resource://com.example.graduation_project/ui/knowledgeFragment/2131755008
E/MediaPlayerNative: error (1, -2147483648)
E/MediaPlayer: Error (1,-2147483648)
D/VideoView: Error: 1,-2147483648
I/zygote: Do partial code cache collection, code=44KB, data=54KB
I/zygote: After code cache collection, code=44KB, data=54KB
    Increasing code cache capacity to 256KB
I/zygote: JIT allocated 56KB for compiled code of void android.view.View.(android.content.Context, android.util.AttributeSet, int, int)
I/zygote: Do full code cache collection, code=103KB, data=74KB
    After code cache collection, code=78KB, data=45KB
D/EGL_emulation: eglMakeCurrent: 0x9e705120: ver 2 0 (tinfo 0x9e703260)
I/chatty: uid=10084(u0_a84) RenderThread identical 2 lines
D/EGL_emulation: eglMakeCurrent: 0x9e705120: ver 2 0 (tinfo 0x9e703260)
D/EGL_emulation: eglMakeCurrent: 0x9e705120: ver 2 0 (tinfo 0x9e703260)

报错不是提示文件找不到吗