如何獲得一個數組（說arrayGroupBy）字典從字典中的數組，其中一些關鍵的價值在另一個字典鍵值

匹配我有一個NSMutable arrray含NSDictionaries這樣的：如何獲得一個數組（說arrayGroupBy）字典從字典中的數組，其中一些關鍵的價值在另一個字典鍵值

<__NSArrayM 0x7a2b4b00>(
{ 
"appointment_id" = 235; 
"component_name" = Anil; 
id = 5; 
"start_time" = "2014-11-04 19:00:00"; 
"time_slot" = "7:00 PM"; 
}, 
{ 
    "appointment_id" = 235; 
"component_name" = "test_book"; 
id = 19; 
"start_time" = "2014-11-04 19:00:00"; 
"time_slot" = "7:00 PM"; 
}, 
{ 
"appointment_id" = 235; 
"component_name" = "New Resource"; 
id = 21; 
"start_time" = "2014-11-04 19:00:00"; 
"time_slot" = "7:00 PM"; 
}, 
{ 
"appointment_id" = 236; 
"component_name" = ctbl; 
id = 8; 
"start_time" = "2014-11-04 22:00:00"; 
"time_slot" = "10:00 PM"; 
}, 
{ 
"appointment_id" = 236; 
"component_name" = btbl; 
id = 7; 
"start_time" = "2014-11-04 22:00:00"; 
"time_slot" = "10:00 PM"; 
    }, 
{ 
"appointment_id" = 236; 
    "component_name" = "New Resource"; 
id = 21; 
"start_time" = "2014-11-04 22:00:00"; 
"time_slot" = "10:00 PM"; 
} 
)

我如何創建一個新的數組說arrGroupByTimeSlots從上述結構的一些事情是這樣的：

array of time slot 
(
time_slot = (an array of dictionaries with matching time_slot) 
time_slot = (an array of dictionaries with matching another time_slot) 
)

詳細：

(
time_slot = ({ 
"appointment_id" = 235; 
"component_name" = Anil; 
id = 5; 
"start_time" = "2014-11-04 19:00:00"; 
"time_slot" = "7:00 PM"; 
}, { 
"appointment_id" = 235; 
"component_name" = "test_book"; 
id = 19; 
"start_time" = "2014-11-04 19:00:00"; 
"time_slot" = "7:00 PM"; 
}, { 
"appointment_id" = 235; 
"component_name" = "New Resource"; 
id = 21; 
"start_time" = "2014-11-04 19:00:00"; 
"time_slot" = "7:00 PM"; 
}), 

time_slot = ({ 
"appointment_id" = 236; 
"component_name" = ctbl; 
id = 8; 
"start_time" = "2014-11-04 22:00:00"; 
"time_slot" = "10:00 PM"; 
}, { 
"appointment_id" = 236; 
"component_name" = btbl; 
id = 7; 
"start_time" = "2014-11-04 22:00:00"; 
"time_slot" = "10:00 PM"; 
}, { 
"appointment_id" = 236; 
"component_name" = "New Resource"; 
id = 21; 
"start_time" = "2014-11-04 22:00:00"; 
"time_slot" = "10:00 PM"; 
}))

我曾嘗試過：解決方案由提供Onik IV原樣。

更多日誌：關注「time_slot」=「7:00 PM」; 我想字典的數組進行排序：

Printing description of arrAllocated: 
<__NSArrayM 0x19055f70>(
{ 
"appointment_id" = 244; 
"component_name" = "badge test"; 
id = 20; 
"start_time" = "2014-11-11 19:00:00"; 
"time_slot" = "7:00 PM"; 
}, 
{ 
"appointment_id" = 246; 
"component_name" = p1; 
id = 42; 
"start_time" = "2014-11-11 18:00:00"; 
"time_slot" = "6:00 PM"; 
}, 
{ 
"appointment_id" = 246; 
"component_name" = p2; 
id = 41; 
"start_time" = "2014-11-11 18:00:00"; 
"time_slot" = "6:00 PM"; 
}, 
{ 
"appointment_id" = 246; 
"component_name" = p3; 
id = 43; 
"start_time" = "2014-11-11 18:00:00"; 
"time_slot" = "6:00 PM"; 
}, 
{ 
"appointment_id" = 247; 
"component_name" = p4; 
id = 44; 
"start_time" = "2014-11-11 19:00:00"; 
"time_slot" = "7:00 PM"; 
}, 
{ 
"appointment_id" = 247; 
"component_name" = p5; 
id = 45; 
"start_time" = "2014-11-11 19:00:00"; 
"time_slot" = "7:00 PM"; 
}, 
{ 
"appointment_id" = 245; 
"component_name" = r1; 
id = 29; 
"start_time" = "2014-11-11 17:00:00"; 
"time_slot" = "5:00 PM"; 
}, 
{ 
"appointment_id" = 245; 
"component_name" = r10; 
id = 38; 
"start_time" = "2014-11-11 17:00:00"; 
"time_slot" = "5:00 PM"; 
}, 
{ 
"appointment_id" = 245; 
"component_name" = r11; 
id = 39; 
"start_time" = "2014-11-11 17:00:00"; 
"time_slot" = "5:00 PM"; 
}, 
{ 
"appointment_id" = 245; 
"component_name" = r12; 
id = 40; 
"start_time" = "2014-11-11 17:00:00"; 
"time_slot" = "5:00 PM"; 
}, 
{ 
"appointment_id" = 245; 
"component_name" = r2; 
id = 30; 
"start_time" = "2014-11-11 17:00:00"; 
"time_slot" = "5:00 PM"; 
}, 
{ 
"appointment_id" = 245; 
"component_name" = r3; 
id = 31; 
"start_time" = "2014-11-11 17:00:00"; 
"time_slot" = "5:00 PM"; 
}, 
{ 
"appointment_id" = 245; 
"component_name" = r4; 
id = 32; 
"start_time" = "2014-11-11 17:00:00"; 
"time_slot" = "5:00 PM"; 
}, 
{ 
"appointment_id" = 245; 
"component_name" = r5; 
id = 33; 
"start_time" = "2014-11-11 17:00:00"; 
"time_slot" = "5:00 PM"; 
}, 
{ 
"appointment_id" = 245; 
"component_name" = r6; 
id = 34; 
"start_time" = "2014-11-11 17:00:00"; 
"time_slot" = "5:00 PM"; 
}, 
{ 
"appointment_id" = 245; 
"component_name" = r7; 
id = 35; 
"start_time" = "2014-11-11 17:00:00"; 
"time_slot" = "5:00 PM"; 
}, 
{ 
"appointment_id" = 245; 
"component_name" = r8; 
id = 36; 
"start_time" = "2014-11-11 17:00:00"; 
"time_slot" = "5:00 PM"; 
}, 
{ 
"appointment_id" = 245; 
"component_name" = r9; 
id = 37; 
"start_time" = "2014-11-11 17:00:00"; 
"time_slot" = "5:00 PM"; 
} 
)

使用Onik IV方法這是我收到講究「TIME_SLOT」= 「7:00 PM」排序後;:

<__NSArrayM 0x17e9b660>(
<__NSArrayM 0x19088e80>(
{ 
"appointment_id" = 244; 
"component_name" = "badge test"; 
id = 20; 
"start_time" = "2014-11-11 19:00:00"; 
"time_slot" = "7:00 PM"; 
} 
) 
, 
<__NSArrayM 0x190543b0>(
{ 
"appointment_id" = 246; 
"component_name" = p1; 
id = 42; 
"start_time" = "2014-11-11 18:00:00"; 
"time_slot" = "6:00 PM"; 
}, 
{ 
"appointment_id" = 246; 
"component_name" = p2; 
id = 41; 
"start_time" = "2014-11-11 18:00:00"; 
"time_slot" = "6:00 PM"; 
}, 
{ 
"appointment_id" = 246; 
"component_name" = p3; 
id = 43; 
"start_time" = "2014-11-11 18:00:00"; 
"time_slot" = "6:00 PM"; 
} 
) 
, 
<__NSArrayM 0x1905d750> 
(
{ 
"appointment_id" = 247; 
"component_name" = p4; 
id = 44; 
"start_time" = "2014-11-11 19:00:00"; 
"time_slot" = "7:00 PM"; 
}, 
{ 
"appointment_id" = 247; 
"component_name" = p5; 
id = 45; 
"start_time" = "2014-11-11 19:00:00"; 
"time_slot" = "7:00 PM"; 
} 
) 
, 
<__NSArrayM 0x190243e0> 
(
{ 
"appointment_id" = 245; 
"component_name" = r1; 
id = 29; 
"start_time" = "2014-11-11 17:00:00"; 
"time_slot" = "5:00 PM"; 
}, 
{ 
"appointment_id" = 245; 
"component_name" = r10; 
id = 38; 
"start_time" = "2014-11-11 17:00:00"; 
"time_slot" = "5:00 PM"; 
}, 
{ 
"appointment_id" = 245; 
"component_name" = r11; 
id = 39; 
"start_time" = "2014-11-11 17:00:00"; 
"time_slot" = "5:00 PM"; 
}, 
{ 
"appointment_id" = 245; 
"component_name" = r12; 
id = 40; 
"start_time" = "2014-11-11 17:00:00"; 
"time_slot" = "5:00 PM"; 
}, 
{ 
"appointment_id" = 245; 
"component_name" = r2; 
id = 30; 
"start_time" = "2014-11-11 17:00:00"; 
"time_slot" = "5:00 PM"; 
}, 
{ 
"appointment_id" = 245; 
"component_name" = r3; 
id = 31; 
"start_time" = "2014-11-11 17:00:00"; 
"time_slot" = "5:00 PM"; 
}, 
{ 
"appointment_id" = 245; 
"component_name" = r4; 
id = 32; 
"start_time" = "2014-11-11 17:00:00"; 
"time_slot" = "5:00 PM"; 
}, 
{ 
"appointment_id" = 245; 
"component_name" = r5; 
id = 33; 
"start_time" = "2014-11-11 17:00:00"; 
"time_slot" = "5:00 PM"; 
}, 
{ 
"appointment_id" = 245; 
"component_name" = r6; 
id = 34; 
"start_time" = "2014-11-11 17:00:00"; 
"time_slot" = "5:00 PM"; 
}, 
{ 
"appointment_id" = 245; 
"component_name" = r7; 
id = 35; 
"start_time" = "2014-11-11 17:00:00"; 
"time_slot" = "5:00 PM"; 
}, 
{ 
"appointment_id" = 245; 
"component_name" = r8; 
id = 36; 
"start_time" = "2014-11-11 17:00:00"; 
"time_slot" = "5:00 PM"; 
}, 
{ 
"appointment_id" = 245; 
"component_name" = r9; 
id = 37; 
"start_time" = "2014-11-11 17:00:00"; 
"time_slot" = "5:00 PM";

} ）

）

如果您看到「time_slot」=「7:00 PM」;

它沒有被分組到相同的陣列中，其他「time_slot」=「7:00 PM」;被分組。

希望我能夠使它更清楚。感謝和問候。

來源

2014-11-04 Alok

你有什麼嘗試嗎？ – 2014-11-04 14:13:46

是的，我已經嘗試過使用謂詞，請參閱編輯 – Alok 2014-11-04 14:16:06

它是否必須是字典？你不能使用自定義對象嗎？ – Fogmeister 2014-11-11 10:27:10

這裏有一個辦法：

NSArray *arrAllocated; // Your initial array 
NSSortDescriptor *sort = [NSSortDescriptor sortDescriptorWithKey:@"time_slot" ascending:YES]; 
NSArray *sorts = @[sort]; 
NSArray *orderedArrAllocated = [arrAllocated sortedArrayUsingDescriptors:sorts]; 

NSMutableArray *groupedFilterArray = [[NSMutableArray alloc] init]; 
NSMutableArray *currentMutableArray; 
NSDictionary *lastObject; 

for (NSDictionary *dict in orderedArrAllocated) 
{ 
    if ([[dict valueForKey:@"time_slot"] isEqualToString:[lastObject valueForKey:@"time_slot"]]) 
    { 
     [currentMutableArray addObject:dict]; 
    } 
    else 
    { 
     NSMutableArray *newMutableArray = [[NSMutableArray alloc] initWithObjects:dict, nil]; 
     lastObject = dict; 
     currentMutableArray = newMutableArray; 
     [groupedFilterArray addObject:newMutableArray]; 

    } 
}

來源

2014-11-04 16:29:32

感謝您的答案，它的一些字典，而不是其他人 – Alok 2014-11-11 10:08:56

@Alok請解釋什麼不在這裏工作。當你說它不分組別人。你到底什麼意思？哪些人？我正要寫一個答案，並意識到它和這完全一樣。 – Fogmeister 2014-11-11 10:33:03

@Fogmeister讓我調試併爲您提供日誌 – Alok 2014-11-11 10:35:03

我用的是這樣的：

NSArray *yourArray = /* Initialize */; 
// Get all time slots 
NSArray *allTimeSlotsArray = [yourArray valueForKey:@"time_slot"]; 
// Remove duplucates 
NSSet *allTimeSlotsSet = [NSSet setWithArray:allTimeSlotsArray]; 
    // Enumerate 
NSMutableDictionary *recordsByTimeSlot = [NSMutableDictionary dictionary]; 
for (NSString *timeSlot in allTimeSlotsSet) { 
    NSPredicate *predicate = [NSPredicate predicateWithFormat:@"time_slot == %@", timeSlot]; 
    NSArray *matchingArray = [yourArray filteredArrayUsingPredicate:predicate]; 
    recordsByTimeSlot[timeSlot] = matchingArray; 
}

更新：
~~商店matchingArray或做任何你需要的。~~
使用生成的recordsByTimeSlot字典。

來源

2014-11-17 08:32:27 orkenstein

@orkenstein答案在這裏完美的作品。但唯一的問題是如果你不保存匹配數組，它將被覆蓋。爲此，您可以使用NSMutableArray並在for循環中添加匹配的數組。我沒有足夠的聲望將其作爲評論發佈，因此我將其作爲答案發布。 :)

-(void)filteredArray 
{ 
     NSArray *yourArray = originalArray; 
     // Get all time slots 
     NSArray *allTimeSlotsArray = [yourArray valueForKey:@"time_slot"]; 
     // Remove duplucates 
     NSSet *allTimeSlotsSet = [NSSet setWithArray:allTimeSlotsArray]; 
     // Enumerate 
    for (NSString *timeSlot in allTimeSlotsSet) { 
     NSPredicate *predicate = [NSPredicate predicateWithFormat:@"time_slot == %@", timeSlot]; 
     NSArray *matchingArray = [yourArray filteredArrayUsingPredicate:predicate]; 
     [finalArray addObjectsFromArray:matchingArray]; 
    } 
    NSLog(@"Filtered Array : %@",finalArray); 
}

finalArray是一個NSMutableArray對象。

來源

2014-11-17 11:29:04 Abi

我認爲這太明顯了） – orkenstein 2014-11-18 06:43:20

如何獲得一個數組（說arrayGroupBy）字典從字典中的數組，其中一些關鍵的價值在另一個字典鍵值

回答

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