How do I know when someone's finished watching a video on my Android app?

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Java

Mobile

Android

media

Hi! This is my first question on Code Project.

I'm making an Android app. In one of the activities I play videos. When one video ends, the second is supposed to start.

At the moment this part of my Java file plays one video:

@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_watch);
		
		VideoView vidView = (VideoView)findViewById(R.id.myVideo);
		
		String vidAddress = "https://archive.org/download/ksnn_compilation_master_the_internet/ksnn_compilation_master_the_internet_512kb.mp4";
		Uri vidUri = Uri.parse(vidAddress);
		
		vidView.setVideoURI(vidUri);
		
		vidView.start();
	}

When this video ends I'm supposed to play the second one. I will probably number the videos so that I can sequence through them.

But my question is:
How can I know when someone's finished watching the first video? I don't allow controls (like forwarding) so that they don't skip any videos. But I don't want them to move on to the second video by closing the app halfway through the first video, for example. So, how can I know when they've finished the first video, and how can I dynamically change the video being played (e.g. video5.mp4)?