Music Player 2020 – Android App + Admob Integration

Introduction to Music Player 2020 - Android App with AdMob Integration Tutorial

In this tutorial, we will be building a music player Android app that uses AdMob to display ads. This app will allow users to play music files stored on their device, and will include features such as play/pause, next/previous track, and a playlist view. We will also integrate AdMob to display ads in the app.

Step 1: Setting up the Project

To start, create a new Android project in Android Studio. Name your project "MusicPlayer2020".

Next, add the AdMob SDK to your project. Go to the AdMob website and follow the instructions to get the AdMob SDK. Once you have the SDK, copy the AdMob API key and add it to your Android project.

Step 2: Creating the User Interface

Create a new activity in your Android project and name it "MainActivity". This will be the main activity that the user will interact with.

Create a layout file for the activity, and add the following elements:

• A toolbar with the title "Music Player 2020"
• A RecyclerView to display the playlist
• A Button to play/pause the music
• A Button to skip to the next track
• A Button to skip to the previous track

Here is an example of what the layout file might look like:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <androidx.appcompat.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@color/colorPrimary"
        android:titleTextAppearance="@style/TextAppearance.AppCompat.Title">

    </androidx.appcompat.widget.Toolbar>

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/playlistRecyclerView"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1">

    </androidx.recyclerview.widget.RecyclerView>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <Button
            android:id="@+id/playPauseButton"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="Play/Pause" />

        <Button
            android:id="@+id/nextTrackButton"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="Next" />

        <Button
            android:id="@+id/previousTrackButton"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="Previous" />

    </LinearLayout>

</LinearLayout>

Step 3: Creating the Playlist Adapter

Create a new Java class that will act as the adapter for the RecyclerView. This class will be responsible for displaying the playlist and handling the clicks on the playlist items.

Here is an example of what the adapter class might look like:

public class PlaylistAdapter extends RecyclerView.Adapter<PlaylistAdapter.ViewHolder> {

    private List<Song> songs;

    public PlaylistAdapter(List<Song> songs) {
        this.songs = songs;
    }

    @NonNull
    @Override
    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.playlist_item, parent, false);
        return new ViewHolder(view);
    }

    @Override
    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
        Song song = songs.get(position);
        holder.songTextView.setText(song.getTitle());
    }

    @Override
    public int getItemCount() {
        return songs.size();
    }

    public class ViewHolder extends RecyclerView.ViewHolder {
        public TextView songTextView;

        public ViewHolder(View itemView) {
            super(itemView);
            songTextView = itemView.findViewById(R.id.songTextView);
        }
    }
}

Step 4: Creating the Music Player

Create a new Java class that will act as the music player. This class will be responsible for playing the music and handling the play/pause and next/previous track buttons.

Here is an example of what the music player class might look like:

public class MusicPlayer {

    private MediaPlayer mediaPlayer;
    private List<Song> songs;
    private int currentSongIndex;

    public MusicPlayer(List<Song> songs) {
        this.songs = songs;
        currentSongIndex = 0;
        mediaPlayer = new MediaPlayer();
    }

    public void play() {
        try {
            mediaPlayer.reset();
            mediaPlayer.setDataSource(songs.get(currentSongIndex).getPath());
            mediaPlayer.prepare();
            mediaPlayer.start();
        } catch (IOException e) {
            Log.e("MusicPlayer", "Error playing music");
        }
    }

    public void pause() {
        mediaPlayer.pause();
    }

    public void nextTrack() {
        currentSongIndex++;
        if (currentSongIndex >= songs.size()) {
            currentSongIndex = 0;
        }
        play();
    }

    public void previousTrack() {
        currentSongIndex--;
        if (currentSongIndex < 0) {
            currentSongIndex = songs.size() - 1;
        }
        play();
    }
}

Step 5: Integrating AdMob

Create a new Java class that will act as the AdMob handler. This class will be responsible for displaying ads in the app.

Here is an example of what the AdMob handler class might look like:

public class AdMobHandler {

    private MobileAds mobileAds;
    private InterstitialAd interstitialAd;
    private RewardedAd rewardedAd;

    public AdMobHandler() {
        mobileAds = new MobileAds();
        interstitialAd = new InterstitialAd();
        rewardedAd = new RewardedAd();
    }

    public void loadInterstitialAd() {
        interstitialAd.loadAd(new AdRequest.Builder().build());
    }

    public void showInterstitialAd() {
        interstitialAd.show(MainActivity.this);
    }

    public void loadRewardedAd() {
        rewardedAd.loadAd(new AdRequest.Builder().build());
    }

    public void showRewardedAd() {
        rewardedAd.show(MainActivity.this);
    }
}

Step 6: Creating the AdMob Layout

Create a new layout file for the AdMob ads. This layout file will contain the ad layout.

Here is an example of what the ad layout file might look like:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">

    <com.google.android.gms.ads.AdView
        android:id="@+id/adView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        ads:adSize="BANNER"
        ads:adUnitId="@string/admob_banner_ad_unit_id">

    </com.google.android.gms.ads.AdView>

</LinearLayout>

Step 7: Integrating the AdMob Layout

Add the AdMob layout to the main activity layout file.

Here is an example of what the main activity layout file might look like:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <androidx.appcompat.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@color/colorPrimary"
        android:titleTextAppearance="@style/TextAppearance.AppCompat.Title">

    </androidx.appcompat.widget.Toolbar>

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/playlistRecyclerView"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1">

    </androidx.recyclerview.widget.RecyclerView>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <Button
            android:id="@+id/playPauseButton"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="Play/Pause" />

        <Button
            android:id="@+id/nextTrackButton"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="Next" />

        <Button
            android:id="@+id/previousTrackButton"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="Previous" />

    </LinearLayout>

    <include layout="@layout/ad_mob_layout" />

</LinearLayout>

Step 8: Adding the AdMob Code

Add the AdMob code to the main activity class.

Here is an example of what the main activity class might look like:

public class MainActivity extends AppCompatActivity {

    private AdMobHandler adMobHandler;
    private MusicPlayer musicPlayer;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        adMobHandler = new AdMobHandler();
        musicPlayer = new MusicPlayer(songs);

        // Load the ad
        adMobHandler.loadInterstitialAd();

        // Display the ad
        adMobHandler.showInterstitialAd();

        // Create the playlist adapter
        PlaylistAdapter playlistAdapter = new PlaylistAdapter(songs);

        // Set the adapter for the RecyclerView
        playlistRecyclerView.setAdapter(playlistAdapter);

        // Set the onClickListener for the playlist items
        playlistAdapter.setOnItemClickListener(new PlaylistAdapter.OnItemClickListener() {
            @Override
            public void onItemClick(Song song) {
                musicPlayer.play(song);
            }
        });

        // Create the music player
        musicPlayer.play();
    }
}

That's it! You have now created a music player Android app with AdMob integration.

Please note that this is a basic example, you may want to add more features to your app such as error handling, network connectivity checking, and more.

Also, make sure to replace the AdMob API key with your own API key and to replace the ad unit IDs with your own ad unit IDs.

I hope this tutorial was helpful! Let me know if you have any questions or need further assistance.