NSDate Timestamp and string conversion

2. One, the method of conversion is
4. NSString *timesp = [NSString stringwithformat:@"%d", (long) [Localedate timeIntervalSince1970]];
6. NSLog (@"timesp:%@", TIMESP); //timestamp value
10. Second, convert the acquired time into the current time
12. NSDate *datenow = [NSDate Date]; //Time now, you can output to see what the format is
14. Nstimezone *zone = [Nstimezone systemtimezone];
16. Nsinteger interval = [zone Secondsfromgmtfordate:datenow];
18. NSDate *localedate = [Datenow datebyaddingtimeinterval:interval];
20. NSLog (@"%@", localedate);
24. 3. Ways to convert timestamps into time
26. NSDate *CONFROMTIMESP = [nsdate dateWithTimeIntervalSince1970:1363948516];
28. NSLog (@"1363948516 =%@", CONFROMTIMESP);
32. Timer
34. NSDate *datenow = [NSDate Date]; //Time now, you can output to see what the format is
36. Nstimezone *zone = [Nstimezone systemtimezone];
38. Nsinteger interval = [zone Secondsfromgmtfordate:datenow];
40. NSDate *localedate = [Datenow datebyaddingtimeinterval:interval];
42. NSLog (@"%@", localedate);
46. NSString *timesp = [NSString stringwithformat:@"%lld", (long long) [Localedate timeIntervalSince1970]];
48. NSLog (@"timesp:%@", TIMESP); //Timestamp value 1369189763711 1369218563 1369218614
52. NSDate *CONFROMTIMESP = [nsdate dateWithTimeIntervalSince1970:1369189763711/1000];
54. NSLog (@"1363948516 =%@", CONFROMTIMESP);
58. //Instantiate a NSDateFormatter object
62. //Judge yesterday morning time before the day of the hour stamp
64. NSDateFormatter *dateformatter1 = [[[[NSDateFormatter alloc] init] autorelease];
66. [DateFormatter1 setdateformat:@"Yyyy-mm-dd 00:00:00"];
68. NSString *currentdatestr1 = [dateFormatter1 stringfromdate:[nsdate Date]];
70. NSLog (@"wee Hours:%@", CURRENTDATESTR1);
72. NSString *TIMESP1 = [NSString stringwithformat:@"%lld", (long long) [Localedate timeIntervalSince1970]];
74. NSLog (@"Morning time stamp:%@", TIMESP1);
76. //Yesterday morning time stamp
78. NSString *timesp2 = [NSString stringwithformat:@"%lld", (long long) [Localedate timeintervalsince1970]-  24*60*60];
80. NSLog (@"Yesterday morning Time stamp:%@", TIMESP2);

NSDate Timestamp and string conversion