安卓傳感器直立旋轉

我知道有關於此的線程，我一直在閱讀它們好幾天。安卓傳感器直立旋轉

我覺得我的問題更具體。我試圖讓設備旋轉y軸。

如果我正確的，它被稱爲方位角

當運行應用程序，它經過調試記錄值[0]，值在logcat的返回0.0 [1]，&值[2]

代碼：

mSensorManager = (SensorManager)getSystemService(SENSOR_SERVICE); 
     accelerometer = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER); 
     magnetometer = mSensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD); 

     SensorEventListener SEL = new SensorEventListener() { 
      @Override 
      public void onSensorChanged(SensorEvent event) { 

       mSensorManager.getRotationMatrix(rotationMatrix, I, gravity, geomagnetic); 

       mSensorManager.getOrientation(rotationMatrix, values); 

       accy = values[0]; 

       System.out.println(accy); 
      } 

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

      } 
     }; 

     int rate = SensorManager.SENSOR_DELAY_GAME; 
     mSensorManager.registerListener(SEL, accelerometer, rate); 
     mSensorManager.registerListener(SEL, magnetometer, rate);

logcat的：

09-05 17:34:02.622 6421-6421/com.ahewdev.eataround I/System.out﹕ 0.0 
09-05 17:34:02.642 6421-6421/com.ahewdev.eataround I/System.out﹕ 0.0 
09-05 17:34:02.642 6421-6421/com.ahewdev.eataround I/System.out﹕ 0.0 
09-05 17:34:02.662 6421-6421/com.ahewdev.eataround I/System.out﹕ 0.0 
09-05 17:34:02.662 6421-6421/com.ahewdev.eataround I/System.out﹕ 0.0 
09-05 17:34:02.682 6421-6421/com.ahewdev.eataround I/System.out﹕ 0.0 
09-05 17:34:02.682 6421-6421/com.ahewdev.eataround I/System.out﹕ 0.0 
09-05 17:34:02.702 6421-6421/com.ahewdev.eataround I/System.out﹕ 0.0 
09-05 17:34:02.702 6421-6421/com.ahewdev.eataround I/System.out﹕ 0.0 
09-05 17:34:02.722 6421-6421/com.ahewdev.eataround I/System.out﹕ 0.0 
09-05 17:34:02.722 6421-6421/com.ahewdev.eataround I/System.out﹕ 0.0 
09-05 17:34:02.742 6421-6421/com.ahewdev.eataround I/System.out﹕ 0.0 
09-05 17:34:02.742 6421-6421/com.ahewdev.eataround I/System.out﹕ 0.0 
09-05 17:34:02.762 6421-6421/com.ahewdev.eataround I/System.out﹕ 0.0 
09-05 17:34:02.762 6421-6421/com.ahewdev.eataround I/System.out﹕ 0.0 
09-05 17:34:02.782 6421-6421/com.ahewdev.eataround I/System.out﹕ 0.0 
09-05 17:34:02.782 6421-6421/com.ahewdev.eataround I/System.out﹕ 0.0 
09-05 17:34:02.802 6421-6421/com.ahewdev.eataround I/System.out﹕ 0.0 
09-05 17:34:02.802 6421-6421/com.ahewdev.eataround I/System.out﹕ 0.0

來源

2014-09-05 ahew

從上面的代碼參數gravity和mSensorManager.getRotationMatrix(rotationMatrix, I, gravity, geomagnetic);geomagnetic可能是zero array，因此您accy總是zero

來源

2014-09-06 00:52:25

確定。現在，這似乎很明顯。我想我沒有完全理解功能如此惡劣做一些研究。謝謝。 – ahew 2014-09-06 02:35:45

看看http://stackoverflow.com/questions/17979238/android-getorientation-azimuth-gets-polluted-when-phone-is-tilted/17981374#17981374 – 2014-09-06 02:55:12

完美。這就是我一直在尋找的東西。 – ahew 2014-09-06 14:33:26

安卓傳感器直立旋轉

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