How to Determine if Android Device has Proximity Sensor Feature

public static final String FEATURE_SENSOR_PROXIMITY was added in API level 7
Feature for getSystemAvailableFeatures() and hasSystemFeature(String).

The device includes a proximity sensor.
Constant Value: "android.hardware.sensor.proximity"

1. Get a PackageManager Instance named myPackageManager.

2. Create a Boolean Variable named bolProximitySupported. 

3. Set the Minimum and Target SDK version  to 7 or greater. 

4. In the onCreate method, add the below code. This will return the proximity sensor ability to a boolean named bolProximitySupported. It will then display a toast displaying the proximity sensor ability of the device to the user.

bolProximitySupported = myPackageManager.hasSystemFeature(PackageManager.FEATURE_SENSOR_PROXIMITY);

if (bolProximitySupported) {

Toast.makeText(this, "Device has Proximity Sensor capability", Toast.LENGTH_LONG).show();

} else {

Toast.makeText(this, "No Proximity Sensor capability!", Toast.LENGTH_LONG).show();

}

5. Compile and run!

Resources:
- http://developer.android.com/reference/android/content/pm/PackageManager.html#FEATURE_SENSOR_PROXIMITY
- http://developer.android.com/guide/topics/sensors/sensors_position.html