NSString測試不會評估爲真正的時候它應該

所以，我一直在努力讓NSPredicate工作，它應該。但它不會。我已經通過這個數組決定進行循環測試怎麼來的，我已經得到了這點與測試NSString測試不會評估爲真正的時候它應該

- (void)getItemsForGroup:(NSString *)groupID completion:(MenuQueryBlock)completion{ 

... 

    for (NSDictionary *group in [[[[[[self.singleMenuSet objectForKey:@"menuList"] firstObject] objectForKey:@"UnitMenu"] objectForKey:@"data"] objectForKey:@"groups"] objectForKey:@"group"]) { 
     NSLog(@"test"); 
     NSLog(@"Group MasterGID: %@",[group objectForKey:@"MasterGID"]); 
     NSLog(@"test_ MasterGID: %@",groupID); 

     if ([[group objectForKey:@"MasterGID"] isEqualToString:groupID]) { 
      NSLog(@"Selected Group: %@",group); 
     } 
    } 
.... 
completion(....) 
}

這裏是「組選」日誌的部分應打印。

2015-09-02 11:42:24.738 business_sect[3687:144610] test_ MasterGID: 24000040 
2015-09-02 11:42:24.738 business_sect[3687:144610] test 
2015-09-02 11:42:24.738 business_sect[3687:144610] Group MasterGID: 24000039 
2015-09-02 11:42:24.738 business_sect[3687:144610] test_ MasterGID: 24000040 
2015-09-02 11:42:24.738 business_sect[3687:144610] test 
2015-09-02 11:42:24.738 business_sect[3687:144610] Group MasterGID: 24000040 
2015-09-02 11:42:24.738 business_sect[3687:144610] test_ MasterGID: 24000040 <----right after this line 
2015-09-02 11:42:24.738 business_sect[3687:144610] test 
2015-09-02 11:42:24.739 business_sect[3687:144610] Group MasterGID: 24000041  
2015-09-02 11:42:24.739 business_sect[3687:144610] test_ MasterGID: 24000040 
2015-09-02 11:42:24.739 business_sect[3687:144610] test 
2015-09-02 11:42:24.739 business_sect[3687:144610] Group MasterGID: 24000042 
2015-09-02 11:42:24.739 business_sect[3687:144610] test_ MasterGID: 24000040 
2015-09-02 11:42:24.739 business_sect[3687:144610] test 
2015-09-02 11:42:24.739 business_sect[3687:144610] Group MasterGID: 24000043 
2015-09-02 11:42:24.739 business_sect[3687:144610] test_ MasterGID: 24000040

那麼，爲什麼不是「選定的組」打印？

來源

2015-09-02 Jargen89

'[group objectForKey：@「MasterGID」]'確實是'NSString'還是它是'NSNumber'？ – Larme

嘗試使用if（[[group objectForKey：@「MasterGIP」] isKindOfClass：[NSNumber class]]），並確定這實際上是一個數字還是一個字符串 –

這是一個'NSString' – Jargen89

你可以試試嗎？

if ([(NSString *)group[@"MasterGID"] hash] == groupID.hash) { 
     NSLog(@"Selected Group: %@",group); 
    }

來源

2015-09-02 16:45:09 serdaryillar

NSString測試不會評估爲真正的時候它應該

回答

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