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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();…
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();
}
}
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