1 //将UTCDate(世界标准时间)转化为当地时区的标准Date（钟表显示的时间）
2 //NSDate *date = [NSDate date]; 2018-03-27 06:54:41 +0000
3 //转化后：2018-03-27 14:54:41 +0000
4 -(NSDate *)getLocalDateFromUTCDate:(NSDate *)UTCDate{
5
6 NSTimeZone *tz = [NSTimeZone defaultTimeZone];
7 NSInteger seconds = [tz secondsFromGMTForDate: UTCDate];
8 return [NSDate dateWithTimeInterval: seconds sinceDate: UTCDate];
9
10 }
11
12 //将当地时区的标准Date转化为UTCDate
13 //当前当地的标准时间：2018-03-27 14:54:41 +0000
14 //转化为世界标准时间:2018-03-27 06:54:41 +0000
15 -(NSDate *)getUTCDateFromLocalDate:(NSDate *)LocalDate{
16
17 NSTimeZone *tz = [NSTimeZone defaultTimeZone];
18 NSInteger seconds = -[tz secondsFromGMTForDate: LocalDate];
19 return [NSDate dateWithTimeInterval: seconds sinceDate: LocalDate];
20
21 }
22
23 //根据UTCDate获取当前时间字符串（钟表上显示的时间）
24 //输入：[NSDate date] 2018-03-27 07:44:05 +0000
25 //输出：2018-03-27 15:44:05
26 -(NSString *)localStringFromUTCDate:(NSDate *)UTCDate{
27
28 NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init];
29 NSTimeZone *tz = [NSTimeZone defaultTimeZone];
30 [dateFormatter setTimeZone:tz];
31 [dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
32 NSString* result=[dateFormatter stringFromDate:UTCDate];
33 return result;
34
35 }
36
37 //根据UTC字符串获取当前时间字符串（钟表上显示的时间）
38 //输入：2018-03-27 07:44:05
39 //输出：2018-03-27 15:44:05
40 -(NSString *)localStringFromUTCString:(NSString *)UTCString{
41
42 //先将UTC字符串转为UTCDate;
43 NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
44 NSTimeZone *tz = [NSTimeZone timeZoneWithAbbreviation:@"GMT"];
45 [dateFormatter setTimeZone:tz];
46 [dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
47 NSDate *UTCDate = [dateFormatter dateFromString:UTCString];
48
49 [dateFormatter setTimeZone:[NSTimeZone defaultTimeZone]];
50 NSString* result = [dateFormatter stringFromDate:UTCDate];
51 return result;
52 }
53
54 //将当前时间字符串转为UTCDate
55 -(NSDate *)UTCDateFromLocalString:(NSString *)localString{
56
57 NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
58 [dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
59 NSDate *date = [dateFormatter dateFromString:localString];
60 return date;
61 }
62
63 //将当前时间字符串转为UTC字符串
64 -(NSString *)UTCStringFromLocalString:(NSString *)localString{
65
66 NSDate *date = [self UTCDateFromLocalString:localString];
67 NSString *string = [NSString stringWithFormat:@"%@",date];
68 NSString *result = [string substringToIndex:string.length-6];
69 return result;
70
71 }
72
73 //UTCDate转UTC字符串
74 -(NSString *)UTCStringFromUTCDate:(NSDate *)UTCDate{
75
76 NSDateFormatter *dataFormatter = [[NSDateFormatter alloc]init];
77 [dataFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
78 NSTimeZone *tz = [NSTimeZone timeZoneWithAbbreviation:@"GMT"];
79 [dataFormatter setTimeZone:tz];
80 NSString *UTCString = [dataFormatter stringFromDate:UTCDate];
81 return UTCString;
82
83 }
84
85 //将当前时间（UTCDate）转为时间戳
86 -(NSString *)timeStampFromUTCDate:(NSDate *)UTCDate{
87
88 NSTimeInterval timeInterval = [UTCDate timeIntervalSince1970];
89 // *1000,是精确到毫秒；这里是精确到秒;
90 NSString *result = [NSString stringWithFormat:@"%.0f",timeInterval];
91 return result;
92
93 }
94
95 //当前时间字符串(钟表上显示的时间)转为时间戳
96 -(NSString *)timeStamapFromLocalString:(NSString *)localString{
97
98 //先转为UTCDate
99 NSDate *UTCDate = [self UTCDateFromLocalString:localString];
100 NSString *timeStamap = [self timeStampFromUTCDate:UTCDate];
101 return timeStamap;
102
103 }
104
105 //将UTCString转为时间戳
106 -(NSString *)timeStamapFromUTCString:(NSString *)UTCString{
107
108 //先将UTC字符串转为UTCDate;
109 NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
110 NSTimeZone *tz = [NSTimeZone timeZoneWithAbbreviation:@"GMT"];
111 [dateFormatter setTimeZone:tz];
112 [dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
113 NSDate *UTCDate = [dateFormatter dateFromString:UTCString];
114
115 NSString *timeStamap = [self timeStampFromUTCDate:UTCDate];
116 return timeStamap;
117 }
118
119 //时间戳转UTCDate
120 -(NSDate *)UTCDateFromTimeStamap:(NSString *)timeStamap{
121
122 NSTimeInterval timeInterval=[timeStamap doubleValue];
123 // /1000;传入的时间戳timeStamap如果是精确到毫秒的记得要/1000
124 NSDate *UTCDate=[NSDate dateWithTimeIntervalSince1970:timeInterval];
125 return UTCDate;
126
127 }
若是想要将时间戳转为字符串，可根据获得的UTCDate再进行转化