ios - 从 NSString ios 获取日期

Question

我的字符串包含::

 [{"temperature":"96.800003","date":"2015-11-26 18:44:42","random_id":"-1963708530","temp_type":"0","drugsymptom_value":""}]

要求: 我怎样才能只从上面的字符串中获取日期值

Answer 1

第一步

将您的 JSON 字符串转换为简单字符串，就像

 NSString *yourString = [{"temperature":"96.800003","date":"2015-11-26 18:44:42","random_id":"-1963708530","temp_type":"0","drugsymptom_value":""}];

 NSData *jsonData = [yourString dataUsingEncoding:NSUTF8StringEncoding];
 // your yourString is started with array not a Dictionary
NSArray *dict = [NSJSONSerialization JSONObjectWithData:jsonData options:nil error:nil];

// now you have Date String
 NSString *DateSTring  = dict[0][@"date"];

第二步

你的字符串为

 2015-11-26 18:44:42
 yyyy-MM-dd HH:mm:ss

 NSDateFormatter *dateFormatter=[[NSDateFormatter alloc]init];
[dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];

 NSDate *finaldate=[dateFormatter dateFromString:DateSTring];


 NSLog(@" finaldate %@",finaldate);