Implemented accelerometer sensor for detection of facing down

android/app/src/main/java/com/chatman/activity/ChatRoomActivity.java

@@ -189,7 +189,7 @@ public class ChatRoomActivity extends AppCompatActivity {
     public void onResume() {
         super.onResume();
         mSensorHelper.listenSensor(Sensor.TYPE_PROXIMITY);
-        mSensorHelper.listenSensor(Sensor.TYPE_GYROSCOPE);
+        mSensorHelper.listenSensor(Sensor.TYPE_ACCELEROMETER);
     }
 
     @Override

android/app/src/main/java/com/chatman/activity/MainActivity.java

@@ -127,7 +127,7 @@ public class MainActivity extends AppCompatActivity implements
     public void onResume() {
         super.onResume();
         mSensorHelper.listenSensor(Sensor.TYPE_PROXIMITY);
-        mSensorHelper.listenSensor(Sensor.TYPE_GYROSCOPE);
+        mSensorHelper.listenSensor(Sensor.TYPE_ACCELEROMETER);
     }
 
     @Override

android/app/src/main/java/com/chatman/helper/SensorHelper.java

@@ -46,8 +46,12 @@ public class SensorHelper {
                         Toast.makeText(context, "You are too close to device", Toast.LENGTH_SHORT).show();
                     }
                 }
-                else if (event.sensor.getType() == Sensor.TYPE_GYROSCOPE) {
-                    //gyro
+                else if (event.sensor.getType() == Sensor.TYPE_ACCELEROMETER) {
+                    //accelero
+                    float z = event.values[2];
+                    if (z > -10 && z < -8) {
+                        Toast.makeText(context, "Please don't use phone while resting down", Toast.LENGTH_SHORT).show();
+                    }
                 }
             }
         };