Check if key exists in Shared Preferences

Question

I\'m creating Shared Preferences as follows

preferences = getSharedPreferences(\"text\", 0);
final Editor editor = preferences.edit();

String s1 = serverIP.         


        

Answer 1

Every method for fetching values from SharedPreferences has default value which is returned in case the key does not exist

preferences = getSharedPreferences("text", 0);
String value = preferences.getString("unknown_key",null);
if (value == null) {
    // the key does not exist
} else {
    // handle the value
}