Enum (enum) for Android development--@IntDef use

Official documentation indicates that Android development should avoid using enums (enum classes) because it takes more than twice times more memory than a static const enum. Ginseng http://developer.android.com/training/articles/memory.html#Overhead

So what should I do if I need to use an enum?

https://noobcoderblog.wordpress.com/2015/04/12/java-enum-and-android-intdefstringdef-annotation/

public class Mainactivity extends Activity {//First define constants public static final int SUNDAY = 0;    public static final int MONDAY = 1;    public static final int Tuesday = 2;    public static final int Wednesday = 3;    public static final int Thursday = 4;    public static final int FRIDAY = 5;     public static final int SATURDAY = 6; Use@IntDef "Wrap" constant;//@Retention define policy//Declare constructor @IntDef ({SUNDAY, monday,tuesday,wednesday,thursday,friday,saturday})     @Retention (retentionpolicy.source) public @interface weekdays {} @WeekDays int currentday = SUNDAY;        @Override protected void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);        Setcontentview (R.layout.activity_main);         Setcurrentday (Wednesday);         Declaring a variable @WeekDays int today = Getcurrentday ();            Switch (today) {case sunday:break;            Case Monday:break;            Case Tuesday:break;            Case Wednesday:break;            Case Thursday:break;            Case Friday:break;            Case Saturday:break;        Default:break;    }} public void Setcurrentday (@WeekDays int currentday) {this.currentday = Currentday;   }  @WeekDays public int Getcurrentday () {return currentday; }}

In Build.gradle

Compile ' com.android.support:support-annotations:22.0.0 '

 

Enum (enum) for Android development--@IntDef use