摘要： - (NSString *)compareCurrentTime:(NSString *)str{ //把字符串转为NSdate NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init]; [dateFormatter setDa 阅读全文

摘要： NSString *curren = [self timeWithTimeIntervalString:time]; - (NSString *)timeWithTimeIntervalString:(NSString *)timeString { NSTimeInterval time=[time 阅读全文