Java-枚举

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枚举不带值

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enum MobileCodeActionEnum {
   MOBILE_LOGIN, THIRD_LOGIN_BIND, CHANGE_PASS
}

使用

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if (mAuthAct == MobileCodeActionEnum.MOBILE_LOGIN) {
    //...
} else if (mAuthAct == MobileCodeActionEnum.THIRD_LOGIN_BIND) {
    //...
} else if (mAuthAct == MobileCodeActionEnum.CHANGE_PASS) {
    //...
}

枚举带值

枚举带单值

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public enum LoginTypeEnum {
	ACCOUNT_LOGIN("account_login"), MOBILE_LOGIN("mobile_login"), THIRD_LOGIN("third_login"),
	ONE_CLICK_LOGIN("one_click_login"), MOBILE_BIND("mobile_bind"), ACCOUNT_BIND("account_bind");

	private final String loginType;
	private String title;

	LoginTypeEnum(String loginType) {
		this.loginType = loginType;
		if (TextUtils.equals(loginType, "account_login")) {
			title = "密码登录";
		} else if (TextUtils.equals(loginType, "mobile_login")) {
			title = "手机号登录/注册";
		} else if (TextUtils.equals(loginType, "mobile_bind")) {
			title = "手机号绑定";
		} else if (TextUtils.equals(loginType, "account_bind")) {
			title = "账号绑定";
		}
	}

	public String getLoginType() {
		return loginType;
	}

	public String getTitle() {
		return title;
	}
}

使用

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//其中 mLoginType 是 LoginTypeEnum 类型。
//如 LoginTypeEnum mLoginTyp = LoginTypeEnum.ACCOUNT_LOGIN;
if (mLoginType != LoginTypeEnum.ACCOUNT_LOGIN) {
	//...
}

枚举带多值

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public enum ApiErrorCodeEnum {
   TOKEN_INVALID(-1001, "token失效，请重新登陆"), UNBIND_597_ACCOUNT(-1106, "未绑定597账号！"),
   MOBILE_BLACKLISTED(-1107, "该手机已被加入黑名单！"),MOBILE_CODE_AUTH_FAILED(-1109,"手机验证码错误");

   private final int code;
   private final String msg;

   ApiErrorCodeEnum(int code, String msg) {
      this.code = code;
      this.msg = msg;
   }

   public int getCode() {
      return code;
   }

   public String getMsg() {
      return msg;
   }
}

使用

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//其中code为int型
if (code == ApiErrorCodeEnum.UNBIND_597_ACCOUNT.getCode()) {
    //...
    //取枚举中的某个字段的值。如取某个状态的msg值
    System.out.println(ApiErrorCodeEnum.UNBIND_597_ACCOUNT.getMsg());
}