SharedPreferences android code example

Example 1: android sharedpreferences

// load file
SharedPreferences sharedPref = getSharedPreferences(PREFERENCES_FILENAME, MODE_PRIVATE);

// read value
String value = sharedPref.getString(PREFERENCE_KEY, null);

// write value
sharedPref.edit()
  .putString(PREFERENCE_KEY, value)
  .apply();

Example 2: android save int

public void saveInt(int val, String key){
    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(mainActivity);
    SharedPreferences.Editor editor = prefs.edit();
    editor.putInt(key, val);
    editor.apply();
}

public int getInt(String key){
    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(mainActivity);
    int val = prefs.getInt(key, 0);
    return val;
}

Example 3: android sharedpreferences

SharedPreferences sharedPref = getSharedPreferences("name", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPref.edit();
editor.putString("key", "Value");
editor.commit();

Example 4: get preference value android

boolean mBoolean = PreferenceManager.getDefaultSharedPreferences(yourContext).getBoolean(key, defaultValue); //getBoolean will return defaultValue is key isn't found
//you can also use getInt, getFloat, getLong, getString, getStringSet and change the variable type, of course

Example 5: refresh sharedpreferences going back java

getPreferenceScreen().getSharedPreferences().registerOnSharedPreferenceChangeListener(this);

Example 6: store data in sharedpreferences android

// MY_PREFS_NAME - a static String variable like: 
//public static final String MY_PREFS_NAME = "MyPrefsFile";
SharedPreferences.Editor editor = getSharedPreferences(MY_PREFS_NAME, MODE_PRIVATE).edit();
 editor.putString("name", "Elena");
 editor.putInt("idName", 12);
 editor.apply();