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.

accelerometer.clearWatch

Stop watching the Acceleration referenced by the watch ID parameter.

navigator.accelerometer.clearWatch(watchID);

watchID: The ID returned by accelerometer.watchAcceleration.

Supported Platforms

Android
BlackBerry WebWorks (OS 5.0 and higher)
iPhone
Windows Phone 7 and 8
Bada 1.2 & 2.x
Tizen
Windows 8

Quick Example

var watchID = navigator.accelerometer.watchAcceleration(onSuccess, onError, options);

// ... later on ...

navigator.accelerometer.clearWatch(watchID);

Full Example

<!DOCTYPE html>
<html>
  <head>
    <title>Acceleration Example</title>

    <script type="text/javascript" charset="utf-8" src="cordova-2.8.0.js"></script>
    <script type="text/javascript" charset="utf-8">

    // The watch id references the current `watchAcceleration`
    var watchID = null;
    
    // Wait for Cordova to load
    //
    document.addEventListener("deviceready", onDeviceReady, false);

    // Cordova is ready
    //
    function onDeviceReady() {
        startWatch();
    }

    // Start watching the acceleration
    //
    function startWatch() {
        
        // Update acceleration every 3 seconds
        var options = { frequency: 3000 };
        
        watchID = navigator.accelerometer.watchAcceleration(onSuccess, onError, options);
    }
    
    // Stop watching the acceleration
    //
    function stopWatch() {
        if (watchID) {
            navigator.accelerometer.clearWatch(watchID);
            watchID = null;
        }
    }
	    
    // onSuccess: Get a snapshot of the current acceleration
    //
    function onSuccess(acceleration) {
        var element = document.getElementById('accelerometer');
        element.innerHTML = 'Acceleration X: ' + acceleration.x + '<br />' +
                            'Acceleration Y: ' + acceleration.y + '<br />' +
                            'Acceleration Z: ' + acceleration.z + '<br />' + 
                            'Timestamp: '      + acceleration.timestamp + '<br />';
    }

    // onError: Failed to get the acceleration
    //
    function onError() {
        alert('onError!');
    }

    </script>
  </head>
  <body>
    <div id="accelerometer">Waiting for accelerometer...</div>
	<button onclick="stopWatch();">Stop Watching</button>
  </body>
</html>