I want to play a notification sound for my Vaadin based website on Android and iOS devices. The notification sound works perfect on desktops. How do I get it to work on mobile devices.
I am using the "Audio" component, with no controls displayed, and just "play" it when I need it. It is a very short sound and small file.
Edit 6/1/2017 ( my current implementation ):
First of all, in the constructor for my very simple form:
barcode.setInputPrompt("Barcode");
barcode.setCaption("Barcode");
barcode.setMaxLength(22);
barcode.setNullRepresentation("");
barcode.setRequired(true);
submit = new Button("Submit");
addComponents(barcode, facilityId, submit );
submit.setStyleName(ValoTheme.BUTTON_PRIMARY);
submit.setClickShortcut(KeyCode.ENTER);
submit.addClickListener(e->this.handleSubmit());
goodScan = new Audio(null, new ThemeResource( "sounds/good-scan.mp3"));
goodScan.setAutoplay(false);
goodScan.setShowControls(false);
badScan = new Audio(null, new ThemeResource( "sounds/bad-scan.mp3"));
badScan.setAutoplay(false);
badScan.setShowControls(false);
addComponents( goodScan, badScan );
Note that I turned auto-play and controls off, so it won't show up on the screen. Actually, at least in my case, the "setShowContrtols(false)" is what hides things, it seems. Later, in my submit method, I have this ( "..." for unrelated code ):
private void submit() {
try {
...
barcode.setValue(null);
barcode.focus();
goodScan.play();
} catch (WMSException e) {
...
Notification.show("Consumption Scan Error", message, Type.ERROR_MESSAGE);
barcode.focus();
badScan.play();
}
...
}
The above works on desktops, but does not work consistently ( if at all ) on Android and iOS devices. I have not dug back into this since the original post because I have had no ideas myself, and people I have asked did not have anything new to offer.
All that said, the above code should work for Vaadin 8 ( knock on wood ), which might help you, Basil.
Related
I don't understand why my sound trigger is not working. I have created a GameObject and added an Audio Source to it (on Audio Source I have the Play On Wake and Loop checked. Then I added a Sphere Collider (I have the Is Trigger checked). Finally I added my script and added the sound clips into the inspector. Unity also says that: "There are 2 audio listeners in the scene." I have pretty much unchecked all the audio listeners and it still says it, what am I doing wrong?
Here is a look at my code:
#pragma strict
var WalkAudio:AudioClip;
var OutCry:AudioClip;
function Update (){
var Audio= gameObject.GetComponent(AudioSource);
if(Input.GetButton("Horizontal") || Input.GetButton("Vertical"))
{
Audio.Play();
}
else
{
Audio.Pause();
}
}
function OnControllerColliderHit (hit : ControllerColliderHit)
{
var Audio= gameObject.GetComponent(AudioSource);
if (hit.gameObject.tag == "templeFloor")
{
var groundType = 1;
print("Temple");
Audio.clip=OutCry;
}
else{
Audio.clip=WalkAudio;
}
}
As you said:
I have pretty much unchecked all the audio listeners
The component AudioListener attached to the Main Camera must be enabled. Probably you have used LoadLevelAdditive so you have two camera and two AudioListener components, one on each of them. Please make sure this additive camera and any other gameObject should have this component disabled.
Also at runtime, you can search which component(s) have AudioListener component attached using this in the Hierarchy window search bar.
t:AudioListener
This should help you out. Also double check using Debug.Log that OnControllerColliderHit function calls and Audio.clip is not null after assignment. Also is it necessary to play sound in Update ?
Also, you should move this line from Update to Start function instead, due to performance cost:
var Audio= gameObject.GetComponent(AudioSource);
and use this Audio variable throughout your script.
i`m using mediaElement to play background music in my app. And that works just fine.
Problem is when the user minimize the application. When the application resume there is no sound... I can play other sounds in my application but cant play that background music any more.
First i have this code to stop all background music at first time app open:
if (Microsoft.Xna.Framework.Media.MediaPlayer.State == MediaState.Playing)
{
Microsoft.Xna.Framework.Media.MediaPlayer.Pause();
FrameworkDispatcher.Update();
}
xaml code of that mediaElement
<MediaElement AutoPlay="True" Source="/Dodaci/pozadina.mp3" x:Name="muzika_pozadina" MediaEnded="pustiPonovo" Loaded="pustiPonovo" />
and the cs code
private void pustiPonovo(object sender, RoutedEventArgs e)
{
muzika_pozadina.Play();
}
sound is about 300kb size.
So, how can i resume that sound playing after the user resume the application?
When your App is put into Dormant State (when you hit Start buton for example), the MediaElement is stopped. Then after you return to your App (and it wasn't Tombstoned), the Page is not Initialized once again, which means that your MediaElement is not loaded once again, so your Music doesn't start once again.
It depends on your purpose and code how it can be returned. In very simple example when you don't need to remember music last position you can just set source of your MediaElement once again in OnNavigatedTo() event:
protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
if (e.NavigationMode == NavigationMode.Back)
muzika_pozadina.Source = new Uri("/Dodaci/pozadina.mp3", UriKind.RelativeOrAbsolute);
}
As you have set your MediaElement.AutoPlay to true - it should start automatically (because of that you probably also don't need your Loaded event pustiPonovo).
In more complicated cases you can take an advantage of Activation and Deactivation events of your App - returning to MediaElement from Dormant/Tombstoned case is well explained here in the article.
You should also read about Fast App Resume in case User decides to return to your App by Tile instead of Launchers-Choosers.
I haven't tried above code, but hopefully it will do the job.
Can anyone tell me the best approach to playing single-tone, audio (.mp3) files in a Windows Phone 8 app? Think of a piano app, where each key would represent a button, and each button would play a different tone.
I'm looking for the most efficient way to go about this - I've got 8 different buttons that need to play a different tone when tapped.
I tried using the MediaElement:
MediaElement me;
public MainPage()
{
InitializeComponent();
me = new MediaElement();
me.AutoPlay = false;
me.Source = new Uri("/Sounds/Sound1.mp3", UriKind.Relative);
btnPlay.Click += btnPlay_Click;
}
private void btnPlay_Click(object sender, EventArgs e)
{
me.Play();
}
But nothing happens, either in the emulator or on a device (testing w/ a Lumia 822). Am I doing something wrong here? It seems like it should be pretty simple. Or would using MediaElement even be the best thing to use for my scenario?
Would this fall under the Background Audio category? I've read through this example but it seems overkill for what I want to do.
I've also read about using XNA's SoundEffect to do the job, but then I'd have to convert my .mp3 files to .wav (which isn't necessarily a problem, but I'd rather not go through that if I don't need to).
Can anyone tell me either what I'm doing wrong in my example above or guide me to a better solution for playing quick <1s audio tones?
I had this problem before with MediaElement not playing audio files. After many attempts I found out that it only plays if it defined in the xaml and AutoPlay is set to true.
Try defining it in the xaml or you can just add it to your LayoutRoot.
var me = new MediaElement();
LayoutRoot.Children.Add(me);
me.AutoPlay = true;
me.Source = new Uri("Sound/1.mp3", UriKind.Relative);
I have had good luck just doing this piece of code in my app. But it may not work as well in your context, give it a whirl though.
mediaElement.Source = new Uri("/Audio/" + songID.ToString() + ".mp3", UriKind.Relative);
mediaElement.Play();
Background: I'm coding a metro-styled app for Win8. I need to be able to play music-file. Because of quality and space requirements we're using encoded audio (mp3/ogg).
I'm using XAudio2 to play sound effects (.wav files), but since I couldn't figure out a way to play encoded audio with it, I decided to play the music files with Media Foundation (IMFMediaPlayer interface).
I downloaded metro apps sample, and found out that the Media Engine Native C++ video playback sample was closest to what I needed.
Now that my app has MediaPlayer playing musics, I ran into a problem. If the device running the app is slow enough, MediaPlayer hangs. When I'm running the release-version of the app on my device, it's fine and I can hear the music just fine. But when I attach the debugger or run it on a slower device, it hangs when I'm setting bytestream for the MediaPlayer to play.
Here's some code, you'll find it pretty similiar to the sample:
StorageFolder^ installedLocation = Windows::ApplicationModel::Package::Current->InstalledLocation;
m_pickFileTask = Concurrency::task<StorageFile^>(installedLocation->GetFileAsync(filename)), m_tcs.get_token());
auto player = this;
m_pickFileTask.then([player](StorageFile^ fileHandle)
{
player->SetURL(fileHandle->Path);
Concurrency::task<IRandomAccessStream^> fOpenStreamTask = Concurrency::task<IRandomAccessStream^> (fileHandle->OpenAsync(Windows::Storage::FileAccessMode::Read));
fOpenStreamTask.then([player](IRandomAccessStream^ streamHandle)
{
MEDIA::ThrowIfFailed(
player->m_spMediaEngine->Pause()
);
MEDIA::GetMediaError(player->m_spMediaEngine);
player->SetBytestream(streamHandle);
if (player->m_spMediaEngine)
{
MEDIA::ThrowIfFailed(
player->m_spEngineEx->Play()
);
MEDIA::GetMediaError(player->m_spMediaEngine);
}
}
);
}
);
And here's the SetBytestream method:
SetBytestream(IRandomAccessStream^ streamHandle)
{
if(m_spMFByteStream != nullptr)
{
m_spMFByteStream->Close();
m_spMFByteStream = nullptr;
}
MEDIA::ThrowIfFailed(
MFCreateMFByteStreamOnStreamEx((IUnknown*)streamHandle, &m_spMFByteStream)
);
MEDIA::ThrowIfFailed(
m_spEngineEx->SetSourceFromByteStream(m_spMFByteStream.Get(), m_bstrURL)
);
MEDIA::GetMediaError(m_spEngineEx);
return;
}
The line where it hangs is:
m_spEngineEx->SetSourceFromByteStream(m_spMFByteStream.Get(), m_bstrURL)
When I'm debugging the app, I can press pause and see the stack. Well, not much of it, but atleast I can see it that it's indefinitely at
ntdll.dll!77b7f4dc()
Any ideas why my app would hang in such a way?
(OPTIONAL: If you know a better way to play mp3/ogg in a c++ metro-styled app, let me know)
Could not figure out why this is happening, but I managed to code a work-a-round:
IMFSourceReader can be used to decode MP3s and feed bytes into XAudio2SourceVoice.
XAudio2 audio stream effect sample contains good example how to do this.
I am working on a J2ME application.
I am using Nokia 6131 NFC phone. I am using NetBeans IDE.
I have 4 forms and I am playing some notification sounds for the user while filling the form.
The problem is sound goes off suddenly after 3 to 4 min and the only solution is to exit the application and again open it.
My Code
public void playSoundOK()
{
try
{
InputStream is = getClass().getResourceAsStream("/OK.wav");
Player player = Manager.createPlayer(is,"audio/X-wav");
player.realize();
player.prefetch();
player.start();
}
catch(Exception e)
{
e.printStackTrace();
}
}
Exception
at com.nokia.mid.impl.isa.mmedia.audio.AudioOutImpl.openSession(AudioOutImpl.java:206)
at com.nokia.mid.impl.isa.mmedia.MediaOut.openDataSession(MediaOut.java:282)
at com.nokia.mid.impl.isa.mmedia.MediaPlayer.doPrefetch(MediaPlayer.java:155)
at com.nokia.mid.impl.isa.amms.audio.AdvancedSampledPlayer.doPrefetch(+4)
at com.nokia.mid.impl.isa.mmedia.BasicPlayer.prefetch(BasicPlayer.java:409)
at org.ird.epi.ui.UtilityClass.playSoundOK(UtilityClass.java:139)
at org.ird.epi.ui.EnrollmentForm.targetDetected(+695)
at javax.microedition.contactless.DiscoveryManager.notifyTargetListeners(DiscoveryManager.java : 700)
at javax.microedition.contactless.DiscoveryManager.access$1200(DiscoveryManager.java:103)
at javax.microedition.contactless.DiscoveryManager$Discoverer.notifyIndication(DiscoveryManager.java:882)
at com.nokia.mid.impl.isa.io.protocol.external.nfc.isi.NFCConnectionHandler$IndicationNotifier.run(+67) javax.microedition.media.MediaException: AUD
I would advise you to split NFC and audio playback into 2 different threads.
It is typically a bad idea to call a method that should take some time to complete (like prefetch) from inside an API callback (like targetDetected) because it makes you rely on a particularly robust kind of internal threading model that may not actually exist in your phone's implementation of MIDP.
You should have one thread whose sole purpose is to play the sounds that your application can emit. Use the NFC callback to send a non-blocking command to play a sound (typically using synchronized access to a queue of commands). The audio playback thread can decide to ignore commands if they were issued at a time when it was busy playing a sound (no point in notifying the users of multiple simultaneous NFC contacts)
You should close your player. Add the following code to your method:
PlayerListener listener = new PlayerListener() {
public void playerUpdate(Player player, String event, Object eventData) {
if (PlayerListener.END_OF_MEDIA.equals(event)) {
player.close();
}
}
};
player.addPlayerListener(listener);