在处理传感器方向时,需要考虑到屏幕的边缘嵌入问题,以防止出现方向错误。在代码中可以通过使用 WindowInsets API 来计算屏幕边缘的偏移量,然后将偏移量应用于传感器方向计算中。示例代码如下:
public class SensorActivity extends AppCompatActivity
implements SensorEventListener {
private SensorManager mSensorManager;
private Sensor mAccelerometer;
private Sensor mMagnetometer;
private float[] mAccelValues = new float[3];
private float[] mMagnetValues = new float[3];
private float[] mRotationMatrix = new float[9];
private float[] mOrientation = new float[3];
private Rect mEdges;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_sensor);
// get the insets for the screen edges
View content = findViewById(android.R.id.content);
mEdges = content.getRootWindowInsets().getSystemWindowInsetRect();
// get sensor manager and sensors
mSensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
mAccelerometer = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
mMagnetometer = mSensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD);
}
@Override
protected void onResume() {
super.onResume();
// register listeners
mSensorManager.registerListener(this, mAccelerometer, SensorManager.SENSOR_DELAY_UI);
mSensorManager.registerListener(this, mMagnetometer, SensorManager.SENSOR_DELAY_UI);
}
@Override
protected void onPause() {
super.onPause();
// unregister listeners
mSensorManager.unregisterListener(this);
}
@Override
public void onSensorChanged(SensorEvent event) {
// get sensor data
if (event.sensor == mAccelerometer) {
System.arraycopy(event.values, 0, mAccelValues, 0, event.values.length);
} else if (event.sensor == mMagnetometer) {
System.arraycopy(event.values