CODEWITHSUNDEEP
c#androidoop
user2129013
user2129013

Reputation: 92

Can somebody please help me with the correct name of this

I am a programming beginner and I have a code snippet like below

public class MainActivity : Activity, Android.Hardware.ISensorEventListener
{
    private SensorManager _senMan;
    float lightSensorValue;
    protected override void OnCreate (Bundle bundle)
    {
        base.OnCreate (bundle);
        SetContentView (Resource.Layout.Main);

        Button button = FindViewById<Button> (Resource.Id.myButton);

        _senMan = (SensorManager)GetSystemService (Context.SensorService);
        Sensor sen = _senMan.GetDefaultSensor (SensorType.Light);
        _senMan.RegisterListener (this, sen, Android.Hardware.SensorDelay.Game);

How do I call _senMan is it an object or a type or any other. My another question is what are the tasks that are happening in senMan = (SensorManager)GetSystemService (Context.SensorService); and Sensor sen = _senMan.GetDefaultSensor (SensorType.Light); How do we call them in a professional way.

Upvotes: 0

Views: 91

Answers (1)

Heinzi
Heinzi

Reputation: 172380

_senMan is a variable of type SensorManager.

_senMan = (SensorManager)GetSystemService (Context.SensorService); is an invocation of method GetSystemService, passing the value of Context.SensorService as a parameter. The result of the method invocation is cast to type SensorManager.

After executing this line of code, variable _senMan references an object of type SensorManager.

Sensor sen = _senMan.GetDefaultSensor (SensorType.Light); is a short hand for

Sensor sen;
sen = _senMan.GetDefaultSensor (SensorType.Light);

The first is a variable declaration, the second an invocation of the GetDefaultSensor method of the object referenced by variable _senMan.

Upvotes: 1

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