package com.hdl.photovoltaic.enums; import static java.lang.annotation.RetentionPolicy.SOURCE; import androidx.annotation.StringDef; import java.lang.annotation.Retention; @Retention(SOURCE) @StringDef({MessageStateType.untreated, MessageStateType.processed, MessageStateType.all}) public @interface MessageStateType { //未处理 String untreated = "UNTREATED"; //已处理 String processed = "PROCESSED"; //全部 String all = "ALL"; }