关于枚举enum的的简单使用

1.自定义一个枚举集合类

public class EnumUnit {
    public enum BoxStatus {
        offline("离线", 0), online("在线", 1);
        private String key;
        private int value;
        BoxStatus(String key, int value) {
            this.key = key;
            this.value = value;
        }

        public int getValue() {
            return value;
        }

        public void setValue(int value) {
            this.value = value;
        }
    }

    public enum DeviceStatus{
        safe("优", 0), warn("良", 1),danger("差",2);
        private String key;
        private int value;

        DataStatus(String key, int value) {
            this.key = key;
            this.value = value;
        }

        public int getValue() {
            return value;
        }

        public void setValue(int value) {
            this.value = value;
        }
    }

}

2.在代码中的使用

   if (boxStatus == EnumUnit.BoxStatus.offline.getValue()) {

     //离线

     imState.setImageResource(R.mipmap.offline);

  }else if (boxStatus== EnumUnit.BoxStatus.online.getValue()) {

     //在线
     imState.setImageResource(R.mipmap.online);
  }