获取当前时间的前一周时间

for (int i=0; i<7; i++) {

NSDate *nowDate = [NSDatedate];

NSDateFormatter *dateFormatter = [[NSDateFormatteralloc]init];

if (i == 6)

{

[dateFormattersetDateFormat:@"MM月dd日"];

}else

{

[dateFormattersetDateFormat:@"dd"];

}

NSDate *timeDate = [NSDatedateWithTimeInterval:-(i+1)*24*60*60sinceDate:nowDate];//前一天

NSString *timeString = [dateFormatter
stringFromDate:timeDate];

NSLog(@"lastDay:%@",timeString);

}

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