How to make SharedPreferences backward compatible?

When developing Android applications, managing user preferences is essential. SharedPreferences is commonly used for this purpose. However, backward compatibility can be an issue, especially when the app updates or when you need to maintain compatibility with older versions of Android. Below is an example of how to handle backward compatibility with SharedPreferences in your Android app.

Example of Creating Backward Compatible SharedPreferences

        SharedPreferences preferences = getSharedPreferences("MyPrefs", Context.MODE_PRIVATE);
        SharedPreferences.Editor editor = preferences.edit();

        // Check for existing data
        if (preferences.contains("key")) {
            String existingValue = preferences.getString("key", "default_value");
            // Handle existing value
        } else {
            // Set default value for older versions
            editor.putString("key", "default_value");
        }
        
        // Commit changes
        editor.apply();

Android SharedPreferences backward compatibility user preferences app development

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