2015-08-03 54 views
-2

我想將從大氣壓的高度存儲到MySql中,但結果爲null將Float從Android存儲到MySql中

這是我的代碼:

public SensorEventListener sensorEventListener = new SensorEventListener() { 
     @Override 
     public void onSensorChanged(SensorEvent event) { 
      float pressure_value = 0.0f; 
      float height = 0.0f; 
      if (Sensor.TYPE_PRESSURE == event.sensor.getType()) 
      { 
       pressure_value = event.values[0]; 
       height = SensorManager.getAltitude(SensorManager.PRESSURE_STANDARD_ATMOSPHERE,pressure_value); 
      } 
      value = String.valueOf(height); 
     } 

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

     } 
    }; 

在我的MySQL,該值的格式兩倍。如何解決這個問題?

回答