Create a video player that plays video files. Assignment in the Meta Android Developer Professional Certification Course

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Goal:

Create a video player that plays a video file.

Objectives:

1. Create an Android project.
2. Add an mp4 video file to your new project.
3. Create a user interface.
4. Add import statements VideoView and MediaController to your Activity class.
5. Add a VideoView to activity_main.xml.
6. Add the code that plays the video in the onCreate() function of MainActivity.kt.

Following this reading exercise, you should be able to create a simple player app.

1. Create an Android project: Start by creating a new Android project in your preferred development environment.

2. Add an mp4 video file: Add an mp4 video file to your new project. You can either use an existing video file or download one from the internet.

3. Create a user interface: Design the user interface for your video player app. This can include a VideoView to display the video, and any necessary controls (e.g., play, pause, stop) that you want to add.

4. Import necessary classes: In your MainActivity.kt file, add the following import statements at the top of the file:

   import android.net.Uri
   import android.os.Bundle
   import android.widget.MediaController
   import android.widget.VideoView

5. Add a VideoView to activity_main.xml: In your activity_main.xml file, add a VideoView to the layout:

    <VideoView
        android:id="@+id/testView"
        android:layout_width="wrap_content"
        android:layout_height="308dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

6. Play the video in onCreate(): In your MainActivity.kt file, add the following code to the onCreate() function:

   override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
   
        binding = ActivityMainBinding.inflate(layoutInflater)
        setContentView(binding.root)
   
        //Find the VideoView class by its id
        val videoView = findViewById<VideoView>(binding.testView.id)
        //Creating MediaController
        val mediaController = MediaController(this)
        mediaController.setAnchorView(videoView)
        //specify the location of media file
        val uri: Uri = parse(
            "android.resource://" + packageName
                    + "/raw/raw"
        )
        //Setting MediaController and URI, then starting the videoView
        videoView.setMediaController(mediaController)
        videoView.setVideoURI(uri)
        videoView.requestFocus()
        videoView.start()
   }

   Replace your_video_file_name with the name of your video file (e.g., sample_video.mp4).

That's it! You have now created a simple video player app that can play an mp4 video file. You can further customize the app by adding additional features, such as controls to pause, rewind, or fast-forward the video.