我使用带有选择器的NSTimer(持续时间为5秒)从NSArray中随机选择名称。代码如下....NSDate*endtime=[NSDatedateWithTimeIntervalSinceNow:5];[NSTimerscheduledTimerWithTimeInterval:0.2target:selfselector:@selector(selectPlayer:)userInfo:endtimerepeats:YES];...-(void)selectPlayer:(NSTimer*)timer{if([timer.userInfotimeIntervalSinceNow]