shared preferences android code example

Example 1: 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 2: android sharedpreferences

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

Example 3: 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 4: refresh sharedpreferences going back java

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

Example 5: 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();

Example 6: shared preferences make null in android

Its as simple as:

yourEditor.remove("your key to remove");
and you must remember to commit as usual:

yourEditor.commit();