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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?