Android Open Source - UK-Weather-repo Temperature Scale

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Back to project page UK-Weather-repo.

License

The source code is released under:

Apache License

Java Source Code

package com.haringeymobile.ukweather.data.objects;
/* w  ww . j a va 2 s  .  co m*/
import com.haringeymobile.ukweather.R;

/** Temperature measurement system. */
public enum TemperatureScale {

  CELSIUS(10, R.string.weather_info_degree_celcius) {

    @Override
    public double convertTemperature(double kelvins) {
      return kelvins - Temperature.DIFFERENCE_BETWEEN_KELVIN_AND_CELCIUS;
    }

  },

  FAHRENHEIT(20, R.string.weather_info_degree_fahrenheit) {

    @Override
    public double convertTemperature(double kelvins) {
      double celsius = CELSIUS.convertTemperature(kelvins);
      return celsius * 9 / 5 + 32;
    }

  };

  /** Internal ID for convenience. */
  private int id;
  /** String resource ID for this scale. */
  private int displayResourceId;

  private TemperatureScale(int id, int displayResourceId) {
    this.id = id;
    this.displayResourceId = displayResourceId;
  }

  public int getId() {
    return id;
  }

  public int getDisplayResourceId() {
    return displayResourceId;
  }

  /**
   * Obtains a temperature, measured in this scale.
   * 
   * @param kelvins
   *            temperature measured in Kelvins
   * @return converted teperature
   */
  public abstract double convertTemperature(double kelvins);

  public static TemperatureScale getTemperatureScaleById(int id) {
    switch (id) {
    case 10:
      return CELSIUS;
    case 20:
      return FAHRENHEIT;
    default:
      throw new IllegalArgumentException(
          "Unsupported temperatureScaleId: " + id);
    }
  }

}

Java Source Code List

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