You can use it as activityindicator during loading.
你可以用它在加载期间活动指示器。
2
Usually the activityindicator shows at least one spontaneous urgent meeting by now.
通常的活动指标表明，目前至少有一个突发的紧急会议。
3
Because you are done receiving data from the server at this point, your request is complete and you can turn off the network activityindicator, as listing 4 demonstrates.