核心数据NSPredicate日期 [英] Core Data NSPredicate for date

问题描述

在我的模型中，我有日期属性，我设置 [NSDate date] ，但得到如

的谓词

  NSPredicate * predicate = [NSPredicate predicateWithFormat：
 @date ==％@，date]; 
   [NSDate date] 它还存储时间和NSPredicate总是返回空有没有办法转换date ==％@部分只找到日期？
解决方案
 
  NSPredicate * predicate = [NSPredicate predicateWithFormat：@（date> =％@）AND（date< =％@） endDate]; 
  
 
In my model I have date attribute and I set it [NSDate date], but getting with predicate like 
 NSPredicate *predicate = [NSPredicate predicateWithFormat:
                              @"date==%@ ,date]; 
returns notting. I know the problem is when I set  [NSDate date] it stores also time and NSPredicate always return empty data. Is there any way to convert "date==%@" part to only look for date?
解决方案
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"(date >= %@) AND (date <= %@)", startDate, endDate];


                        
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