Android JetPlayer: A Guide to Audio Playback on Android

Android JetPlayer is a high-level audio playback engine that provides powerful features such as mixing and crossfading of audio tracks.

In this article, we’ll take a closer look at Android JetPlayer and explore how you can use it to enhance the audio experience in your Android apps.

If you’re an Android developer looking for a way to play high-quality audio files with low latency, then Android JetPlayer is the multimedia API for you. Introduced in Android 4.1 (Jelly Bean), JetPlayer is designed to provide a powerful toolset for creating interactive and dynamic audio experiences in Android applications. It is a part of the Android multimedia framework and is intended to replace the older SoundPool API.

What is Android JetPlayer?

Android JetPlayer is an advanced audio playback engine introduced by Google as part of the Android 4.0 Ice Cream Sandwich release. JetPlayer is designed to provide a high-level interface for audio playback, making it easier for developers to create rich, interactive audio experiences in their apps.

One of the key features of JetPlayer is its ability to mix and crossfade audio tracks. With JetPlayer, you can play multiple audio tracks simultaneously and seamlessly crossfade between them. This feature is particularly useful for creating dynamic audio experiences, such as in music apps or games.

Using Android JetPlayer

To use JetPlayer in your Android app, you will need to include the JetPlayer library in your project and instantiate a JetPlayer object.

Here is an example of how you can use JetPlayer to play an audio file:

JetPlayer player = JetPlayer.getJetPlayer();

In the above code we have created a JetPlayer object in our Android app by using the getJetPlayer() method and then load an audio file using the loadJetFile() method. After loading the audio file, we can call the play() method to play the file.

If you want to customize the audio playback of JetPlayer in your Android app, you can use the JetPlayer.OnJetEventListener interface. This interface enables you to receive events during audio playback, such as when a note is played or when a track finishes playing.

Here’s an example of how you can use the JetPlayer.OnJetEventListener interface:

JetPlayer player = JetPlayer.getJetPlayer();
player.setOnJetEventListener(new JetPlayer.OnJetEventListener() {
public void onJetEvent(JetPlayer player, short segment, byte track, byte channel, byte controller, byte value) {
// Handle the event here
public void onJetNumQueuedSegmentUpdate(JetPlayer player, int nbSegments) {
// Handle the event here

In this example, we instantiate a JetPlayer object and implement the OnJetEventListener interface. Then, we use the play() method to begin playing the audio file.


You can use JetCreator as a powerful tool to create Jet files for your Android games and apps. These multimedia files contain both music and sound effects that can provide users with a more immersive and engaging experience. With Jet files, you can enhance the overall quality of your app or game and make it stand out from the competition.

JetCreator Setup

To use JetCreator, you need to download and install it on your computer, which is available for download from the Android Developers website. After installing JetCreator, you can start creating your custom audio tracks.
To create a new Jet file, select “New” from the File menu, and specify the name and location of your new project. Then, you can add up to 16 tracks to the Jet file by selecting “Add Track” from the Track menu. Each track can contain a MIDI sequence, sound effects, or both.

JetCreator Editing

To edit a track in JetCreator, double-click on it in the Track List. This will open the Track Editor, where you can edit the MIDI sequence or sound effects for the track. The MIDI Editor allows you to create and edit MIDI sequences using a piano roll interface, while the Sound Effect Editor allows you to add and edit sound effects for the track.
After editing a track, you can save your changes by selecting “Save” from the File menu and preview it by selecting “Play” from the Transport menu.

JetCreator Results

Once you have finished creating your Jet file, you can export it to your Android project by selecting “Export” from the File menu. In the Export Project dialog box, you can specify the location and filename of the exported Jet file. Then, you can include it in your Android project.

JetPlayer Methods

Here are some of the methods you can use with JetPlayer:

loadJetFile(String path)Loads a Jet file from the specified path. This file contains the music and sound effects for your app.
play()Starts playing the Jet file. If the file has not been loaded, an IllegalStateException is thrown.
pause()Pauses playback of the Jet file.
resume()Resumes playback of the Jet file.
stop()Stops playback of the Jet file.
queueJetSegment(int segmentNum, int libNum, int repeatCount, int transpose, int muteFlags)Queues a Jet segment to be played. A Jet segment is a section of the Jet file that contains a musical phrase or sound effect.
setOnJetEventListener(JetPlayer.OnJetEventListener listener)Sets the listener for JetPlayer events. The listener will receive callbacks for certain events during audio playback, such as when a note is played or when a track finishes playing.
release()Releases the JetPlayer resources. This should be called when the JetPlayer is no longer needed to free up system resources.
setVolume(float leftVolume, float rightVolume)Sets the volume of the JetPlayer. The volume is specified as a float value between 0.0f and 1.0f, where 0.0f is silent and 1.0f is full volume.
setMuteFlags(int muteFlags)Sets the mute flags for the JetPlayer. The mute flags are used to mute certain channels or tracks in the Jet file.
setMasterVolume(float volume)Sets the master volume for the JetPlayer. The master volume is a float value between 0.0f and 1.0f, where 0.0f is silent and 1.0f is full volume. This method can be used to adjust the overall volume of the JetPlayer without affecting the volume of individual channels or tracks.
getQueueJetSegmentArray()Returns an array of queued Jet segments. Each element in the array represents a queued Jet segment and contains information such as the segment number and repeat count.

Benefits of Android JetPlayer

If you are an Android app developer, you should consider using JetPlayer to enhance the audio experience in your applications.

Here are some of the benefits of using JetPlayer:

  • With JetPlayer, you can play high-quality audio files with up to 16-bit/48 kHz sampling rate. This results in a better audio experience for your users compared to the legacy SoundPool API.
  • JetPlayer is designed to use minimal memory resources. This makes it ideal for use in mobile devices and other resource-constrained environments. With JetPlayer, you can enjoy high-quality audio playback without worrying about excessive memory usage.
  • JetPlayer allows you to dynamically control and manipulate audio playback. You can use JetPlayer to create complex and interactive audio experiences in your application. For example, you can change the tempo, pitch, and volume of audio in real-time.
  • JetPlayer provides a wide range of tools and APIs for customizing audio playback. This enables you to create unique audio experiences for your application. You can use JetPlayer to add effects such as reverb, chorus, and distortion to your audio playback. You can also use JetPlayer to create interactive soundtracks for games and other applications.

To sum up, if you are an Android developer looking to create interactive and immersive audio experiences for your users, Android JetPlayer is an essential tool for you. You can take advantage of its powerful tools and APIs to create unique and high-quality audio experiences that will make your app stand out and improve the user experience.

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