SharedPreferences change set values after apply()

Variable declaration

public String am_PM1, am_PM2;
        
public static final String AM_PM1 = "";
public static final String AM_PM2 = "";

I have 2 string values that are being put in sharedPreferences, but after they get put in and applied, the second value in this case AM_PM2 overwrites AM_PM1. If I change the order of execution and put AM_PM2 before AM_PM1, then AM_PM1 overwrites the first value.

Log.d("lol", "Value before 1: " + am_PM1);
Log.d("lol", "Value before 2: " + am_PM2);

editor.putString(AM_PM1, am_PM1);
editor.putString(AM_PM2, am_PM2);

editor.apply();

Log.d("lol", "" + sharedPreferences.getAll());

Log.d("lol", "Value after 1: " + sharedPreferences.getString(AM_PM1, ""));
Log.d("lol", "Value after 2: " + sharedPreferences.getString(AM_PM2, ""));

Screenshot of the console output:

Doing this for the first time, I didn't realize that the actual string value assigned to the variable mattered. So if you encounter such a problem make sure that you are not as silly as me and have actually assigned a string value to the variable.

public static final String AM_PM1 = "amPM1";
public static final String AM_PM2 = "amPM2";

SharedPreferences use a Key-Value pair to store data. If your keys are the same, it means every time you write a value, you over write the previous one. Thus giving you unexpected values when you try to retrieve them.

AM_PM1 & AM_PM2 are equal. remove public static final String AM_PM1 = ""; & public static final String AM_PM2 = "";
do this :

  editor.edit().putString("AM_PM1", am_PM1).apply();
  editor.edit().putString("AM_PM2", am_PM2).apply();