license: > Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied.  See the License for the
specific language governing permissions and limitations
under the License.

title: volumedownbutton

volumedownbutton

L‘evento viene generato quando l’utente preme il volume basso pulsante.

document.addEventListener("volumedownbutton", yourCallbackFunction, false);

Dettagli

Se è necessario eseguire l'override di volume giù il comportamento predefinito è possibile registrare un listener di eventi per il volumedownbutton evento.

Applicazioni in genere è necessario utilizzare document.addEventListener per fissare un listener di eventi una volta il [deviceready](events.deviceready.html) evento incendi.

Piattaforme supportate

BlackBerry 10

Esempio rapido

document.addEventListener("volumedownbutton", onVolumeDownKeyDown, false);

function onVolumeDownKeyDown() {
    // Handle the volume down button
}

Esempio completo

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
                      "http://www.w3.org/TR/html4/strict.dtd">
<html>
  <head>
    <title>Volume Down Button Example</title>

    <script type="text/javascript" charset="utf-8" src="cordova.js"></script>
    <script type="text/javascript" charset="utf-8">

    // Wait for device API libraries to load
    //
    function onLoad() {
        document.addEventListener("deviceready", onDeviceReady, false);
    }

    // device APIs are available
    //
    function onDeviceReady() {
        // Register the event listener
        document.addEventListener("volumedownbutton", onVolumeDownKeyDown, false);
    }

    // Handle the volume down button
    //
    function onVolumeDownKeyDown() {
    }

    </script>
  </head>
  <body onload="onLoad()">
  </body>
</html>