org.awokenwell.proximity

This is a fork of https://github.com/rbarroetavena/cordova-plugin-proximity, which is a fork of https://github.com/awoken-well/cordova-plugin-proximity. It has been modified to improve power efficiency and be compatible with newer versions of Android.

This plugin provides access to the device's (IR) proximity sensor. This sensor is typically used in applications to prevent touch events on the screen when the device is held close to one's face.

Installation

cordova plugin add https://github.com/opentelecom/cordova-plugin-proximity.git

Supported Platforms

• iOS
• Android

Methods

• navigator.proximity.getProximityState
• navigator.proximity.enableSensor
• navigator.proximity.disableSensor
• navigator.proximity.enableProximityScreenOff
• navigator.proximity.disableProximityScreenOff

navigator.proximity.getProximityState

Get the current proximity sensor state: true = near, false = far.

This proximity state is returned to the 'successCallback' callback function.

navigator.proximity.getProximityState(successCallback);

navigator.proximity.enableSensor

Enable the proximity sensor. In iOS the proximity sensor is disabled by default and must be enabled manually. If the proximity value is not checked within 30 seconds, the sensor will be turned off to save power.

navigator.proximity.enableSensor();

navigator.proximity.disableSensor

Disable the proximity sensor.

navigator.proximity.disableSensor();

navigator.proximity.enableProximityScreenOff();

This function enables the functionality that makes the device screen turn off when the proximity sensor detects a near object. Note that the device does not actually fall asleep while the screen is off.

navigator.proximity.enableProximityScreenOff();

navigator.proximity.disableProximityScreenOff();

This function disables the functionality that makes the device screen turn off when the proximity sensor detects a near object.

navigator.proximity.disableProximityScreenOff();

Example 1

function onSuccess(state) {
    alert('Proximity state: ' + (state ? 'near' : 'far'));
};

navigator.proximity.enableSensor();

setInterval(function(){
  navigator.proximity.getProximityState(onSuccess);
}, 1000);

Example 2

This example shows a watcher. If other things approaches the phone, 'on_approch_callback' would be called.

var proximitysensor = {
};

var proximitysensorWatchStart = function(_scope, on_approch_callback) {
    if(navigator.proximity == null)
        console.log("cannot find navigator.proximity");

    navigator.proximity.enableSensor();

    // Start watch timer to get proximity sensor value
    var frequency = 100;
    _scope.id = window.setInterval(function() {
        navigator.proximity.getProximityState(function(val) { // on success
            var timestamp = new Date().getTime();
            if(timestamp - _scope.lastemittedtimestamp > 1000) { // test on each 1 secs
                if( proximitysensor.lastval == 1 && val == 0 ) { // far => near changed
                    _scope.lastemittedtimestamp = timestamp;
                    _scope.lastval = val;
                    on_approch_callback(timestamp);
                }
            }
            _scope.lastval = val;
        });
    }, frequency);
}

var proximitysensorWatchStop = function(_scope) {
    if(navigator.proximity == null)
        console.log("cannot find navigator.proximity");

    window.clearInterval( _scope.id );

    navigator.proximity.disableSensor();
};

proximitysensorWatchStart(proximitysensor, function(timestamp) {
   console.log('approched on ' + timestamp);
});

// .... after testing
//proximitysensorWatchStop(proximitysensor);

Example 3

This example shows how the plugin can easily be used to turn the device screen on and off when it approaches an object.

// Enables polling of proximity to automatically disable screen when object is near
startProximityPolling() {
    navigator.proximity.enableSensor();
    navigator.proximity.enableProximityScreenOff();
}
disable proximity sensing
stopProximityPolling() {
    navigator.proximity.disableProximityScreenOff();
    navigator.proximity.disableSensor();
}