FirstTimePreference helps you to run your code the first time, either the first n times. Example: FirstTimePreference prefFirstTime = new FirstTimePreference(getApplicationContext()); if (prefFirstTime.runTheFirstNTimes("myKey" , 3)) { Toast.makeText(this, "Test myKey & coutdown: "+ prefFirstTime.getCountDown("myKey"), Toast.LENGTH_LONG).show();…

FirstTimePreference.java

package com.use.your.package.here;

import android.content.Context;
import android.content.SharedPreferences;

/**
 * @author Gabriele Porcelli
 * 
 *         Example. 
 *         FirstTimePreference prefFirstTime = new FirstTimePreference(getApplicationContext()); 
 *         if (prefFirstTime.runTheFirstNTimes("myKey" , 3)) {
 *         Toast.makeText(this,"Test myKey & coutdown: "+ prefFirstTime.getCountDown("myKey"),Toast.LENGTH_LONG).show(); }
 */

public class FirstTimePreference {

    private static final int INT_ERROR = -1;
	public static final String FIRST_TIME_PREFERENCES_KEY = "FirstKeyPreferences";
	public static final String FIRST_TIME_COUNTDOWN_KEY = "FirstCountdownKey";
	private final SharedPreferences firstTimePreferences;

	public FirstTimePreference(Context context) {
		firstTimePreferences = context.getSharedPreferences(
				FIRST_TIME_PREFERENCES_KEY, Context.MODE_PRIVATE);
	}

	/**
	 * @param key
	 * @return the how many times the code will be executed yet
	 */
	public int getCountDown(String key) {
		return firstTimePreferences.getInt(key + FIRST_TIME_COUNTDOWN_KEY,
				INT_ERROR);
	}

	/**
	 * @param key
	 *            - Countdown default 0
	 * @return true the first time
	 */
	public boolean runTheFirstTime(String key) {
		return runTheFirstNTimes(key, 0);
	}

	/**
	 * @param key
	 * @param countdown
	 * @return true for the first <countdown> times
	 */
	public boolean runTheFirstNTimes(String key, int countdown) {
		int countDownPref = getCountDown(key);

		switch (countDownPref) {
		case 0:
			setFalse(key);
			break;

		case INT_ERROR:
			if (countdown != 0) {
				setCountDown(key, countdown - 1);
			} else {
				setCountDown(key, 0);
			}
			break;

		default:
			setCountDown(key, countDownPref - 1);
			break;
		}

		boolean actionResult = firstTimePreferences.getBoolean(key, true);
		return actionResult;
	}

	private void setFalse(String key) {
		SharedPreferences.Editor editor = firstTimePreferences.edit();
		editor.putBoolean(key, false);
		editor.commit();
	}

	private void setCountDown(String key, int countDown) {
		SharedPreferences.Editor editor = firstTimePreferences.edit();
		editor.putInt(key + FIRST_TIME_COUNTDOWN_KEY, countDown);
		editor.commit();
	}

}