objective-c – 在XCode 5中显示该特定年份的月份列表

2023年8月25日 170次阅读 
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
dateFormatter.dateFormat = @"yyyy";
NSDate *date = [dateFormatter dateFromString:@"2011"];
for(int month=0;month<=12;month++)
   {
dateFormatter.dateFormat=@"MMMM";
NSString * monthString = [[dateFormatter stringFromDate:date] capitalizedString];
NSLog(@"month: %@", monthString);
    }

我需要显示特定年份的所有月份.例如,如果我将年份作为2011年,我想要在那一年的整个12个月,我使用上面的代码.

但答案是,我将在12月印刷一个月,但是我需要在特定年份整整12个月.

最佳答案 请尝试以下代码.

      //NSInteger startingMonth = 1;
    NSInteger startingYear = 2014;

    // we'll need this in several places
    NSCalendar *cal = [NSCalendar currentCalendar];

    // build the first date (in the starting month and year)
    NSDateComponents *comps = [[NSDateComponents alloc] init];
    //[comps setMonth:startingMonth];
    [comps setYear:startingYear];
    // [comps setDay:1];
    NSDate *date = [cal dateFromComponents:comps];

    // this is our output format
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    [formatter setDateFormat:@"MMMM YYYY"];
    NSDateFormatter *format1 = [[NSDateFormatter alloc] init];
    [format1 setDateFormat:@"MM yy"];
    // we need NSDateComponents for the difference, i.e. at each step we
    // want to go one month further
    NSDateComponents *comps2 = [[NSDateComponents alloc] init];
    [comps2 setMonth:1];

    for (int i= 0; i < 12; i++) {
        NSLog(@"month list %@", [format1 stringFromDate:date]);
        NSString *str=[NSString stringWithFormat:@"%@",[formatter stringFromDate:date]];
        [mothlist_ary addObject:str];
        NSLog(@"GET MONTH %@",mothlist_ary);
        // add 1 month to date
        date = [cal dateByAddingComponents:comps2 toDate:date options:0];

    }
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