Android App says can't play video on button click

Question

I deployed an app to my smartphone and it was just a simple project to test a video view's functionality. I have xml code i used to design the button that calls the playVideo() function from the MainActivity java class
Here is my xml code for the button with the android:onClick trigger

<Button
android:id="@+id/button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:onClick="playVideo"
android:text="@string/Button1" />
And here is the MainActivity.java embedded code that takes care of playing the video when the button is clicked
package com.example.videoplayer;

import android.net.Uri;
import android.os.Bundle;

import com.google.android.material.floatingactionbutton.FloatingActionButton;
import com.google.android.material.snackbar.Snackbar;

import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;

import android.view.View;

import android.view.Menu;
import android.view.MenuItem;
import android.widget.MediaController;
import android.widget.VideoView;

public class MainActivity extends AppCompatActivity {

public void playVideo(View v) { //Your code here//
MediaController m = new MediaController(this);
String path = "android.resource://com.aasemjs.videoplayer/"+R.raw.rain;
Uri u = Uri.parse(path);
VideoView vid = (VideoView) findViewById(R.id.videoView);
vid.setVideoURI(u);

vid.start();

}

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
VideoView vid = (VideoView) findViewById(R.id.videoView);
Toolbar toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);

FloatingActionButton fab = findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View

Answer 1

@Thesmallest, Does android support mp4 video format?