android videoview can't play video

android videoview can't play video

The result display cannot be played.

code is just these lines

public void display(View view) {
        VideoView videoView=findViewById(R.id.videoView);
        videoView.setVideoPath("android.resource://"+getPackageName()+"/"+R.raw.yanhua);
        videoView.start();
    }

Prompts for running:
D/OpenGLRenderer: Enabling debug mode 0
D/EGL_emulation: eglMakeCurrent: 0xa40240a0: ver 2 0(tinfo 0xa40160c0)
D/MediaPlayer: getMetadata
E/MediaPlayer: error(1, -38)
E/MediaPlayer: error(1, -38)
E/MediaPlayer: Error(1,-38)
D/VideoView: Error: 1,-38
D/EGL_emulation: eglMakeCurrent: 0xa40240a0: ver 2 0(tinfo 0xa40160c0)
D/EGL_emulation: eglMakeCurrent: 0xa40240a0: ver 2 0(tinfo 0xa40160c0)