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Android APIs
public abstract @interface

StringDef

implements Annotation
android.support.annotation.StringDef

Class Overview

Denotes that the annotated String element, represents a logical type and that its value should be one of the explicitly named constants.

Example: 

        
         @Retention(SOURCE)
  @StringDef({
     POWER_SERVICE,
     WINDOW_SERVICE,
     LAYOUT_INFLATER_SERVICE
  })
  public @interface ServiceName {}
  public static final String POWER_SERVICE = "power";
  public static final String WINDOW_SERVICE = "window";
  public static final String LAYOUT_INFLATER_SERVICE = "layout_inflater";
  ...
  public abstract Object getSystemService(@ServiceName String name);

Summary

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Inherited Methods
From interface java.lang.annotation.Annotation