如何在android应用程序中使用传感器接收电话？

Question

我想开发一个android应用程序，我想使用接近传感器或加速度传感器来回答电话呼叫。在有来电的情况下，当我将获得一定的感应器值时，该呼叫将被自动接收。例如，当我将我的手从左到右移动到接近传感器前面时，呼叫将被接收，从右到左，呼叫将被拒绝。在使用加速度计的情况下，当我用耳朵触摸手机时，传感器将接收到x，y，z的某个值，然后电话就会被接收到。我已经尝试了一些东西，但是，当电话收到一个号码的呼叫时，我无法读取传感器的值。当手机接到电话时，有没有可能获取BroadCastReceiver内部的感应值或读取感应器？我从play商店测试了一个名为"Wave Control Pro“的应用程序。

https://play.google.com/store/apps/details?id=com.MarksThinkTank.WaveControlPro&feature=search_result

Answer 1

像这样使用，我得到了水平和垂直的传感器

public class SensorActivity extends Activity implements SensorEventListener{
    private static final String TAG="SensorActivity";

    private Context context=null;
    private float mLastX, mLastY, mLastZ;
    private boolean mInitialized;
    private SensorManager mSensorManager;
    private Sensor mAccelerometer;
    private final float NOISE = (float) 5.0;

    ArrayList<String> arraylist=null;

    private SharedPreferences seedPrefs = null;
    private String prefname = "shakingvideo";

    VideoBean vbean= new VideoBean();

      @Override
      public void onCreate(Bundle savedInstanceState) {
           super.onCreate(savedInstanceState);
           setContentView(R.layout.video);
           context=this;

           mInitialized = false;
           mSensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
           mAccelerometer = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
           mSensorManager.registerListener(this, mAccelerometer , SensorManager.SENSOR_DELAY_NORMAL);

            arraylist= new ArrayList<String>();

      }

      @Override
    protected void onResume() {
        super.onResume();
        mSensorManager.registerListener(this, mAccelerometer, SensorManager.SENSOR_DELAY_NORMAL);
    }

      @Override
    protected void onPause() {
        super.onPause();
        mSensorManager.unregisterListener(this);
    }


    public void onAccuracyChanged(Sensor arg0, int arg1) {
        // TODO Auto-generated method stub

    }

    public void onSensorChanged(SensorEvent event) {

        float x = event.values[0];
        float y = event.values[1];
        float z = event.values[2];


        if (!mInitialized) {
            mLastX = x;
            mLastY = y;
            mLastZ = z;
            mInitialized = true;
        } else {
            float deltaX = Math.abs(mLastX - x);
            float deltaY = Math.abs(mLastY - y);
            float deltaZ = Math.abs(mLastZ - z);
            if (deltaX < NOISE) deltaX = (float)0.0;
            if (deltaY < NOISE) deltaY = (float)0.0;
            if (deltaZ < NOISE) deltaZ = (float)0.0;
            mLastX = x;
            mLastY = y;
            mLastZ = z;
            if (deltaX > deltaY) {


                // horizontal shaking    receive here your call

            } else if (deltaY > deltaX) {

                //Reject here your call

            } else {
                // no shaking
            }
        }
    }
}