Implementation of music player concept. Welcome Live Equalizer with wave effect. As animation shows, when music plays the waves are active, and once it is paused or stopped – waves calm down.

Setup process can be splitted into few steps.

    <uses-feature android:glEsVersion="0x00020000" android:required="true" />

All functionality built upon Visualizer object, so you also need to include this permissions in your manifest:

    <uses-permission android:name="android.permission.RECORD_AUDIO"/>
    <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS"/>

You must be very careful with new Android M permissions flow. Make sure you have all necessary permissions before using GLAudioVisualizationView.

There are two ways to include GLAudioVisualizationView in your layout: directly in XML layout file or using builder in Java code.

Via XML:

    <com.cleveroad.audiovisualization.GLAudioVisualizationView
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/visualizer_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:bubble_size="@dimen/bubble_size"
        app:randomize_bubble_size="true"
        app:wave_height="@dimen/wave_height"
        app:footer_height="@dimen/footer_height"
        app:waves_count="7"
        app:layers_count="4"
        app:background_color="@color/color_bg"
        />

Via Java code:

    new GLAudioVisualizationView.Builder(getContext())
        .setBubbleSize(R.dimen.bubble_size)
        .setRandomizeBubbleSize(true)
        .setWaveHeight(R.dimen.wave_height)
        .setFooterHeight(R.dimen.footer_height)
        .setWavesCount(7)
        .setLayersCount(4)
        .setBackgroundColorRes(R.color.color_bg)
        .setLayerColors(R.array.colors)
        .build();

GLAudioVisualizationView implements AudioVisualization interface. If you don't need all GLSurfaceView's public methods, you can simply cast your view to AudioVisualization interface and use it.

    private AudioVisualization audioVisualization;
    
    ...
    
    @Override
    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        // you can extract AudioVisualization interface for simplifying things
        audioVisualization = (AudioVisualization) glAudioVisualizationView;
    }

...

To connect audio visualization view to audio output you can use linkTo(int) or linkTo(MediaPlayer) methods.

    // connecting to device's output mix
    audioVisualization.linkTo(0);
    ...
    MediaPlayer mp = MediaPlayer.create(...);
    audioVisualization.linkTo(mp);

You must always call onPause method to pause visualization and stop wasting CPU resources for computations in vain. As soon as your view appears in sight of user, call onResume.

    @Override
    public void onResume() {
        super.onResume();
        audioVisualization.onResume();
    }
    
    @Override
    public void onPause() {
        audioVisualization.onPause();
        super.onPause();
    }

When user leaves screen with audio visualization view, don't forget to free resources and call release() method.

    @Override
    public void onDestroyView() {
        audioVisualization.release();
        super.onDestroyView();
    }

If you have any other questions regarding the use of this library, please contact us for support at info@cleveroad.com (email subject: "Android visualization view. Support request.") or

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