2015-08-03 30 views
-2

我想将从大气压的高度存储到MySql中,但结果为null将Float从Android存储到MySql中

这是我的代码:

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,该值的格式两倍。如何解决这个问题?

回答