Android：获取光传感器的最大值

Question

For my app I need to get the maximum value of light sensor. I thought it was the same for all devices which have light sensor (ie SensorManager.LIGHT_SUNLIGHT_MAX) but according to sample tests made on devices I was wrong.

The problem is that with SensorListener you can only know when the value has changed.

So my question is: How to get maximum value of light sensor (assuming that the user can put a powerfull light in front of the sensor that, ie light value > maximum sensor value) ?

A solution could be looking at value growth but I don't know how to manage it.

Answer 1

Use following method :

getMaximumRange()

Implementation :

SensorManager sensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
Sensor lightSensor = sensorManager.getDefaultSensor(Sensor.TYPE_LIGHT);
maxvalue = lightSensor.getMaximumRange(); 

Source :

http://developer.android.com/reference/android/hardware/Sensor.html#getMaximumRange ()