PickupDetector.java

package io.rong.callkit;

import android.content.Context;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;

public class PickupDetector {

    private SensorManager manager;
    private Sensor mProximitysensor;

    private boolean isPickUp;
    private PickupDetectListener listener;

    public PickupDetector(Context context) {

        manager = (SensorManager) context.getSystemService(Context.SENSOR_SERVICE);
        if (manager != null){
            mProximitysensor = manager.getDefaultSensor(Sensor.TYPE_PROXIMITY);
        }

    }

    SensorEventListener sensorEventListener = new SensorEventListener() {
        @Override
        public void onSensorChanged(SensorEvent sensorEvent) {

            if (mProximitysensor == null) return;

            float value = sensorEvent.values[0];
            isPickUp = value < sensorEvent.sensor.getMaximumRange();
            //打开或者关闭屏幕
            if (listener != null){
                listener.onPickupDetected(isPickUp);
            }
        }

        @Override
        public void onAccuracyChanged(Sensor sensor, int i) {

        }
    };



    public void register(PickupDetectListener listener){
        this.listener = listener;
        if (manager != null){
            manager.registerListener(sensorEventListener,mProximitysensor,SensorManager.SENSOR_DELAY_FASTEST);
        }
    }

    public void unRegister(){
        if (manager != null){
            manager.unregisterListener(sensorEventListener);
        }
        listener = null;  //释放引用。
    }

    public interface PickupDetectListener{
        void onPickupDetected(boolean isPickingUp);
    }
}