什么是Android定向传感器的替代品？ [英] What is the alternative to android orientation sensor?

问题描述

我正在尝试在我的游戏中添加一个传感器，允许播放器倾斜Android作为其控件。

理想情况下，我想使用ORIENTATION传感器，但我注意到它已被弃用。有没有人知道如何在Android中检测到倾斜并且不使用此传感器？

解决方案

没有实际的方向传感器 - 实际上是一个复合传感器，由加速度计和压力计的组合产生。

从 http://developer.android.com/reference/android/hardware/SensorEvent.html

传感器类型存在原因，请使用 getRotationMatrix（）与和 getOrientation（）来计算这些值。

  public class OrientationTestActivity extends Activity实现了SensorEventListener 
 {
 private SensorManager mSensorManager; 
私人传感器mAccelerometer; 
私人传感器mMagnetometer; 
 
 private float [] mLastAccelerometer = new float [3]; 
 private float [] mLastMagnetometer = new float [3]; 
 private boolean mLastAccelerometerSet = false; 
 private boolean mLastMagnetometerSet = false; 
 
 private float [] mR = new float [9]; 
 private float [] mOrientation = new float [3]; 
 
 @Override 
 public void onCreate（Bundle savedInstanceState）
 {
 super.onCreate（savedInstanceState）; 
 setContentView（R.layout.main）; 
 
 mSensorManager =（SensorManager）getSystemService（SENSOR_SERVICE）; 
 mAccelerometer = mSensorManager.getDefaultSensor（Sensor.TYPE_ACCELEROMETER）; 
 mMagnetometer = mSensorManager.getDefaultSensor（Sensor.TYPE_MAGNETIC_FIELD）; 
} 
 
 protected void onResume（）{
 super.onResume（）; 
 mLastAccelerometerSet = false; 
 mLastMagnetometerSet = false; 
 mSensorManager.registerListener（this，mAccelerometer，SensorManager.SENSOR_DELAY_NORMAL）; 
 mSensorManager.registerListener（this，mMagnetometer，SensorManager.SENSOR_DELAY_NORMAL）; 
} 
 
 protected void onPause（）{
 super.onPause（）; 
 mSensorManager.unregisterListener（this）; 
} 
 
 public void onAccuracyChanged（传感器传感器，int精度）{
} 
 
 @Override 
 public void onSensorChanged（SensorEvent event） {
 if（event.sensor == mAccelerometer）{
 System.arraycopy（event.values，0，mLastAccelerometer，0，event.values.length）; 
 mLastAccelerometerSet = true; 
} else if（event.sensor == mMagnetometer）{
 System.arraycopy（event.values，0，mLastMagnetometer，0，event.values.length）; 
 mLastMagnetometerSet = true; 
} 
 if（mLastAccelerometerSet&& mLastMagnetometerSet）{
 SensorManager.getRotationMatrix（mR，null，mLastAccelerometer，mLastMagnetometer）; 
 SensorManager.getOrientation（mR，mOrientation）; 
 Log.i（OrientationTestActivity，String.format（Orientation：％f，％f，％f，
 mOrientation [0]，mOrientation [1]，mOrientation [2]））; 
} 
} 
} 
  

Hi I am building a 3D game for Android.

I am currently trying to add a sensor to my game that allows the player to tilt the android as its controls.

Ideally I would like to use the ORIENTATION sensor, but I noticed it has been deprecated. Does anyone know how to detect tilt in the android and doesn't use this sensor?

解决方案

There is no actual "orientation" sensor - this is (was) actually a composite sensor, generated from a combination of the accelerometer and the magnometer.

From http://developer.android.com/reference/android/hardware/SensorEvent.html

"This sensor type exists for legacy reasons, please use getRotationMatrix() in conjunction with remapCoordinateSystem() and getOrientation() to compute these values instead."

public class OrientationTestActivity extends Activity implements SensorEventListener
{
    private SensorManager mSensorManager;
    private Sensor mAccelerometer;
    private Sensor mMagnetometer;

    private float[] mLastAccelerometer = new float[3];
    private float[] mLastMagnetometer = new float[3];
    private boolean mLastAccelerometerSet = false;
    private boolean mLastMagnetometerSet = false;

    private float[] mR = new float[9];
    private float[] mOrientation = new float[3];

    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        mSensorManager = (SensorManager)getSystemService(SENSOR_SERVICE);
        mAccelerometer = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
        mMagnetometer = mSensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD);
    }

    protected void onResume() {
        super.onResume();
        mLastAccelerometerSet = false;
        mLastMagnetometerSet = false;
        mSensorManager.registerListener(this, mAccelerometer, SensorManager.SENSOR_DELAY_NORMAL);
        mSensorManager.registerListener(this, mMagnetometer, SensorManager.SENSOR_DELAY_NORMAL);
    }

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

    public void onAccuracyChanged(Sensor sensor, int accuracy) {
    }

    @Override
    public void onSensorChanged(SensorEvent event) {
        if (event.sensor == mAccelerometer) {
            System.arraycopy(event.values, 0, mLastAccelerometer, 0, event.values.length);
            mLastAccelerometerSet = true;
        } else if (event.sensor == mMagnetometer) {
            System.arraycopy(event.values, 0, mLastMagnetometer, 0, event.values.length);
            mLastMagnetometerSet = true;
        }
        if (mLastAccelerometerSet && mLastMagnetometerSet) {
            SensorManager.getRotationMatrix(mR, null, mLastAccelerometer, mLastMagnetometer);
            SensorManager.getOrientation(mR, mOrientation);
            Log.i("OrientationTestActivity", String.format("Orientation: %f, %f, %f",
                                                           mOrientation[0], mOrientation[1], mOrientation[2]));
        }
    }
}

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