Settings.java

package com.koushikdutta.rommanager;

import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

public class Settings
{
	SQLiteDatabase mDatabase;
	Context mContext;
	private Settings(Context context)
	{
		mContext = context;
		SQLiteOpenHelper helper = new SQLiteOpenHelper(mContext, "settings.db", null, 1)
		{
			private final static String mDDL = "CREATE TABLE settings (key TEXT PRIMARY KEY, value TEXT);"; 
			@Override
			public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
				onCreate(db);
			}
			
			@Override
			public void onCreate(SQLiteDatabase db) {
				db.execSQL(mDDL);
			}
		};
		mDatabase = helper.getWritableDatabase();
	}
	
	private static Settings mInstance; 
	public static Settings getInstance(Context context) {
	    if (mInstance == null) {
	        mInstance = new Settings(context);
	    }
	    return mInstance;
	}
	
	public void setString(String name, String value)
	{
		ContentValues cv = new ContentValues();
		cv.put("key", name);
		cv.put("value", value);
		mDatabase.delete("settings", "key='" + name + "'", null);
		mDatabase.insert("settings", null, cv);
	}
	
	public String getString(String name)
	{
		return getString(name, null);
	}
	
	public String getString(String name, String defaultValue)
	{
		Cursor cursor = mDatabase.query("settings", new String[] { "value" }, "key='" + name + "'", null, null, null, null);
		try
		{
			if (cursor.moveToNext())
				return cursor.getString(0);
		}
		finally
		{
			cursor.close();
		}
		return defaultValue;
	}
	
	public void setInt(String name, int value)
	{
		setString(name, ((Integer)value).toString());
	}
	
	public int getInt(String name, int defaultValue)
	{
		try
		{
			return Integer.parseInt(getString(name, null));
		}
		catch(Exception ex)
		{
			return defaultValue;
		}
	}	
	public void setLong(String name, long value)
	{
		setString(name, ((Long)value).toString());
	}
	
	public long getLong(String name, long defaultValue)
	{
		try
		{
			return Long.parseLong(getString(name, null));
		}
		catch(Exception ex)
		{
			return defaultValue;
		}
	}	
	
	public void setBoolean(String name, boolean value)
	{
		setString(name, ((Boolean)value).toString());
	}
	
	public boolean getBoolean(String name, boolean defaultValue)
	{
		try
		{
			return Boolean.parseBoolean(getString(name, ((Boolean)defaultValue).toString()));
		}
		catch(Exception ex)
		{
			ex.printStackTrace();
			return defaultValue;
		}
	}
}