How to get sensor value as variable -

this stupid question cannot handle myself. managed value of light sensor. need value variable cannot access variable x. me out?

public class lightwakeup extends appcompatactivity {

imagebutton imagebutton; intent navrat; mediaplayer mp; textview text; sensormanager sensormanager; sensor sensor; float x; public float c;      @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_light_wakeup);     toolbar toolbar = (toolbar) findviewbyid(r.id.toolbar);     setsupportactionbar(toolbar);     text = (textview)findviewbyid(r.id.textview);              //zapnuti hudby     mp = mediaplayer.create(this, r.raw.hypnothis);     mp.setvolume(50, 50);     mp.start();      sensormanager = (sensormanager) getsystemservice(context.sensor_service);     sensor = sensormanager.getdefaultsensor(sensor.type_light);     text.settext(string.valueof(c));         imagebutton = (imagebutton) findviewbyid(r.id.imagebutton);     imagebutton.setonclicklistener(new view.onclicklistener() {         @override         public void onclick(view v) {             mp.stop();             navrat = new intent(getapplicationcontext(), mainpage.class);             startactivity(navrat);         }     }); } public void onresume() {     super.onresume();     sensormanager.registerlistener(lightlistener, sensor,             sensormanager.sensor_delay_normal); }  public void onstop() {     super.onstop();     sensormanager.unregisterlistener(lightlistener); }  public sensoreventlistener lightlistener = new sensoreventlistener() {     public void onaccuracychanged(sensor sensor, int acc) { }      public void onsensorchanged(sensorevent event) {         x = event.values[0];         text.settext((int)x);      } }; 

}

you need set variable x public modifier:

public float x; 

by default, class variables without modifiers set "internal" in c#. can see variable modifiers @ https://msdn.microsoft.com/en-us/library/ms173121.aspx