Android Open Source - T-CEP-Alert Settings Data

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License

The source code is released under:
MIT License
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Java Source Code

package org.ruscoe.tcepalert.dao;
/*from  www .jav  a2s.  c  o m*/
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;

/**
 * Extends the game Data Access Object to provide access to the
 * user settings data.
 * 
 * All settings as stored as a name / value pair, where the value is always
 * a String. Methods exist to get and set values as boolean and int.
 * This allows for additional settings to be added later without altering the
 * simple table structure.
 * 
 * @author Dan Ruscoe
 */
public class SettingsData extends AlertDAO
{
  public static final String TABLE_NAME = "settingsData";
  
  public static final String SETTING_NAME = "settingName";
  public static final String VALUE = "value";
  
  public static final String SETTING_NAME_UPDATE_INTERVAL = "updateInterval";
  
  public SettingsData(Context ctx)
  {
    super(ctx);
  }
  
  /**
   * Gets the value of a setting as a boolean.
   * 
   * @param settingName - The name of the setting to get.
   * @return boolean - The boolean value of the setting.
   */
  public boolean getValueAsBoolean(String settingName)
  {
    boolean booleanValue = false;
    
    String value = getValue(settingName); 
    
    if (value != null)
    {
      booleanValue = (value.equals("1"));
    }
    
    return booleanValue;
  }
  
  /**
   * Gets the value of a setting as an int.
   * 
   * @param settingName - The name of the setting to get.
   * @return int - The int value of the setting.
   */
  public int getValueAsInt(String settingName)
  {
    int intValue = 0;
    
    String value = getValue(settingName);
    
    if (value != null)
    {
      intValue = Integer.parseInt(value);
    }
    
    return intValue;
  }
  
  /**
   * Gets the string value of a setting by name.
   * 
   * @param String settingName - The name of the setting to get.
   * @return String - The value of the setting.
   */
  public String getValue(String settingName)
  {
      SQLiteDatabase db = this.getReadableDatabase();
      
      String[] from = { SETTING_NAME, VALUE };
      Cursor cursor = db.query(TABLE_NAME, from, SETTING_NAME + "='" + settingName + "'", null, null, null, null);
      
      String value = null;
      
      if (cursor != null)
      {
        while (cursor.moveToNext())
          {          
          value = cursor.getString(1);
          }
        cursor.close();
      }
      
      db.close();
      return value;
  }
  
  /**
   * Sets the value of a setting as a boolean.
   * 
   * @param settingName - The name of the setting to set.
   * @param value - The boolean value of the setting.
   */
  public void setValue(String settingName, boolean value)
  {
    String stringValue = (value)? "true" : "false";
    
    setValue(settingName, stringValue);
  }
  
  /**
   * Sets the value of a setting as an int.
   * 
   * @param settingName - The name of the setting to set.
   * @param value - The int value of the setting.
   */
  public void setValue(String settingName, int value)
  {
    String stringValue = Integer.toString(value);
    
    setValue(settingName, stringValue);
  }
  
  /**
   * Sets the value of a setting by name.
   * 
   * @param String settingName - The name of the setting to set.
   * @param String value - The string value of the setting.
   */
  public void setValue(String settingName, String value)
    {
      SQLiteDatabase db = this.getWritableDatabase();
      
      ContentValues values = new ContentValues();
      
      values.put(SETTING_NAME, settingName);
      values.put(VALUE, value);
      
      int affectedRows = db.update(TABLE_NAME, values, null, null);
      
      if (affectedRows < 1)
      {
        db.insertOrThrow(TABLE_NAME, null, values);
      }
      
      db.close();
    }
}
Java Source Code List
