如何一个NSMutableArray存储到另一个的NSMutableArray在Objective-C

这里是我的JSON和源代码，我尝试：
JSON：如何一个NSMutableArray存储到另一个的NSMutableArray在Objective-C

{ 
    "total": 2, 
    "floorplans": [ 
     { 
      "_id": { 
       "$id": "57fdd13e368e728c278328f6" 
      }, 
      "indoor_map_name": “Building 1”, 
      "geo_coords": { 
       "lat": "42.0912000000000010", 
       "long": "-71.2643390000000070" 
      }, 
      "map_community_id": 20316, 
      "map_drawing_id": 31728, 
      "map_level_id": 53146, 
      "organization": [ 
       "org-57d67a986edc6182458466" 
      ], 
      "drawings": [ 
       { 
        "map_drawing_id": "21419", 
        "levels": [ 
         { 
          "map_level_id": "53136", 
          "min_height": "70", 
          "max_height": "75" 
         } 
        ] 
       }, 
       { 
        "map_drawing_id": "31728", 
        "levels": [ 
         { 
          "map_level_id": "53146", 
          "min_height": "70", 
          "max_height": "86" 
         }, 
         { 
          "map_level_id": "53149", 
          "min_height": "86", 
          "max_height": "96" 
         }, 
         { 
          "map_level_id": "53150", 
          "min_height": "96", 
          "max_height": "110" 
         } 
        ] 
       } 
      ], 
      "uuid": "mapgroup-57fdd13e25afd890493911" 
     } 
    ] 
}

代码：

-(void)getAllDrawingsandLevels:(NSDictionary *)dict 
{ 
    int total = [[dict objectForKey:@"total"] intValue]; 
    if (total >0) {    
      arrFloorplans =[dict objectForKey:@"floorplans"]; 
      if (arrFloorplans!=nil) { 
       for (int i=0; i<[arrFloorplans count]; i++) { 
        arrFloorplans1 = [arrFloorplans objectAtIndex:i]; 
        //NSLog(@"arrDrawings1 %@",arrFloorplans1); 

       NSString *srtCommID = [arrFloorplans1 valueForKey:@"map_community_id"]; 
       if ([[NSString stringWithFormat:@"%@",srtCommID] isEqualToString:[NSString stringWithFormat:@"%@",[kCommunityid objectAtIndex:i]]]) { 
        arrDrawings = [arrFloorplans1 valueForKey:@"drawings"]; 
        if (arrDrawings !=nil) { 
         for (int j = 0; j<[arrDrawings count]; j++) { 
          arrDrawings1 = [arrDrawings objectAtIndex:j]; 
          NSString *StrDrwaingID = [NSString stringWithFormat:@"%@",[arrDrawings1 valueForKey:@"map_drawing_id"]]; 
          [arrDrawingsID addObject:StrDrwaingID]; 
          //[arrLevelsID removeAllObjects]; 
          arrLevels = [arrDrawings1 valueForKey:@"levels"]; 
          for (int k = 0; k< [arrLevels count]; k++) { 
           arrLevels1 = [arrLevels objectAtIndex:k]; 
           NSString *StrLevelID = [NSString stringWithFormat:@"%@",[arrLevels1 valueForKey:@"map_level_id"]]; 
           [arrLevelsID addObject:StrLevelID]; 
          } 
     [arrFinalLevelID addObjectsFromArray:arrLevelsID]; 
          }       
         NSLog(@"arrDrawingsID %@",arrDrawingsID); 
         NSLog(@"arrLevelsID %@",arrLevelsID); 
         NSLog(@"arrFinalLevelID %@",arrFinalLevelID); 

        } 
       } 
      } 
    } 
}

我想要两个阵列
1）arrDrawingsID = [21419][31728]我顺利地拿到了和第二个

2）arrFinalLevelID = [53136][53146,53149,53150]但有了这个代码，我的输出是提前
[53136,53136,53146,53149,53150]

谢谢， Mihir

来源

2016-11-17 Mihir Oza

看到这个http://stackoverflow.com/questions/7868015/how-to-add-an-nsmutablearray-to-an-nsmutablearray-objective-c –

@ Anbu.Karthik我使用的一样，但我认为我的代码有一些小错误。请检查我的代码并告诉我我的错误在哪里。 –

问题出在这一行[arrFinalLevelID addObjectsFromArray:arrLevelsID];它应该是[arrFinalLevelID addObject:arrLevelsID];还需要在循环之前重新初始化arrLevelsID。

arrLevelsID = [NSMutableArray alloc] init]; //reinitialized Array for removing previous value 
arrLevels = [arrDrawings1 valueForKey:@"levels"]; 
for (int k = 0; k< [arrLevels count]; k++) { 
    arrLevels1 = [arrLevels objectAtIndex:k]; 
    NSString *StrLevelID = [NSString stringWithFormat:@"%@",[arrLevels1 valueForKey:@"map_level_id"]]; 
    [arrLevelsID addObject:StrLevelID]; 
} 
[arrFinalLevelID addObject:arrLevelsID]; //instead of addObjectsFromArray:

来源

2016-11-17 10:08:37

谢谢你解决我愚蠢的错误。它的工作:) –

如何一个NSMutableArray存储到另一个的NSMutableArray在Objective-C

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