Minimum API level for using android EncryptedSharedPreference?

Question

What is the minimum API level required for android encryptedShared preference?

I'm using following dependency

implementation "androidx.security:security-crypto:1.0.0-alpha02"

My minimum API level is 21, I've read that minimum API required for shared preference is 23.

If in my code can I put a logic like below API 23 use regular sharedPreference(I use server to store critical data) and I will never initialize encrypted shared preference and in API23+ I use encrypt shared preference.

Will my code compile and run without any issue in below API23?

Answer 1

Will my code compile and run without any issue in below API23?

Yes

For creating SharedPreferences OR EncryptedSharedPreferences on with API Level check

object PrefMgr {
  private var preferences: SharedPreferences? = null

  init {
    preferences = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        EncryptedSharedPreferences.create(
            context,
            APP_PREF_FILE,
            MasterKey.Builder(context)
                .setKeyScheme(MasterKey.KeyScheme.AES256_GCM)
                .build(),
            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
        )
    } else {
        context.getSharedPreferences(APP_PREF_FILE, Context.MODE_PRIVATE)
    }
  }
}