使用方向传感器，定位手机y轴方向(y轴与北方夹角0-360度)

y轴: 手机长边方向 x轴：手机短边方向 z轴：与手机平面垂直方向

本文源码：https://github.com/lioilwin/StepOrient

一.使用

public class MainActivity extends AppCompatActivity implements OrientSensor.OrientCallBack{ ......... @Override public void Orient(float orient) { // 方向回调,手机长边y轴与北方夹角0-360度 orientText.setText("方向:" + (int) orient); } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); orientText = (TextView) findViewById(R.id.orient_text); // 开启方向监听 orientSensor = new OrientSensor(this, this); if (!orientSensor.registerOrient()) { Toast.makeText(this, "方向传感器不可用！", Toast.LENGTH_SHORT).show(); } } ....... }

二.方向传感器类

/** * 方向传感器 */ public class OrientSensor implements SensorEventListener { private static final String TAG = "OrientSensor"; private SensorManager sensorManager; private OrientCallBack orientCallBack; private Context context; float[] accelerometerValues = new float[3]; float[] magneticValues = new float[3]; public OrientSensor(Context context, OrientCallBack orientCallBack) { this.context = context; this.orientCallBack = orientCallBack; } public interface OrientCallBack { /** * 方向回调 */ void Orient(int orient); } /** * 注册加速度传感器和地磁场传感器 * @return 是否支持方向功能 */ public Boolean registerOrient() { Boolean isAvailable = true; sensorManager = (SensorManager) context.getSystemService(Context.SENSOR_SERVICE); // 注册加速度传感器 if (sensorManager.registerListener(this, sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER), SensorManager.SENSOR_DELAY_GAME)) { Log.i(TAG, "加速度传感器可用！"); } else { Log.i(TAG, "加速度传感器不可用！"); isAvailable = false; } // 注册地磁场传感器 if (sensorManager.registerListener(this, sensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD), SensorManager.SENSOR_DELAY_GAME)) { Log.i(TAG, "地磁传感器可用！"); } else { Log.i(TAG, "地磁传感器不可用！"); isAvailable = false; } return isAvailable; } /** * 注销方向监听器 */ public void unregisterOrient() { sensorManager.unregisterListener(this); } @Override public void onSensorChanged(SensorEvent event) { if (event.sensor.getType() == Sensor.TYPE_ACCELEROMETER) { accelerometerValues = event.values.clone(); } else if (event.sensor.getType() == Sensor.TYPE_MAGNETIC_FIELD) { magneticValues = event.values.clone(); } float[] R = new float[9]; float[] values = new float[3]; SensorManager.getRotationMatrix(R, null, accelerometerValues, magneticValues); SensorManager.getOrientation(R, values); int degree = (int) Math.toDegrees(values[0]);//旋转角度 if (degree < 0) { degree += 360; } orientCallBack.Orient(degree); } @Override public void onAccuracyChanged(Sensor sensor, int accuracy) { } }

简书: http://www.jianshu.com/p/066f667c99c3 博客: http://blog.csdn.net/qq_32115439/article/details/61620059 GitHub博客：http://lioil.win/2017/03/13/Android-Orient.html Coding博客：http://c.lioil.win/2017/03/13/Android-Orient.html