NSCFDictionary - 無法識別的選擇器發送到實例

Question

我有兩種模式 - 模式1和模式2可以通過中央按鈕進行切換。模式之間的切換允許用戶查看兩種不同類型的聚類註釋。

我能夠切換模式1模式2輕鬆，但是當我切換回模式1我得到這個討厭的錯誤

-[__NSCFDictionary componentsSeparatedByString:]: unrecognized selector sent to instance 0x7fb1308cca50 

我打開我的代碼，並在TBClusteredAnnotations.m（劇本我用於集羣化）。我有與下面的代碼片斷，以componentsSeparatedByString：

TBQuadTreeNodeData TBDataFromLine(NSString *line) 

{ 
    NSString *separator=@">>>>>>>>"; 

    NSArray *components = [line componentsSeparatedByString: separator]; 
    double latitude = [components[0] doubleValue]; 
    double longitude = [components[1] doubleValue]; 

    TBUserInfo* userInfo = malloc(sizeof(TBUserInfo)); 

    NSString *userName = [components[2] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]; 
    userInfo->userId = malloc(sizeof(char) * userName.length + 1); 
    strncpy(userInfo->userId, [userName UTF8String], userName.length + 1); 

    NSString *userId = [components [3] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]; 
    userInfo->userImage = malloc(sizeof(char) * userId.length + 1); 
    strncpy(userInfo->userImage, [userId UTF8String], userId.length + 1); 

    return TBQuadTreeNodeDataMake(latitude, longitude, userInfo); 
} 

，但我裝我的註解與MainViewController下面的代碼：

-(void)annotationsmode1:(NSMutableArray*)marr 
{ 
    if(marr.count>0) 
    { 
     NSMutableArray *newMarr1=[NSMutableArray new]; 
     NSString *separatestuff=@">>>>>>>>"; 
     for(NSMutableDictionary *dic in marr) 
     { 
      NSString *newStr=[NSString stringWithFormat:@"%@%@",[dic[@"latitude"] isEqualToString:@""]?@" ":dic[@"latitude"],separatestuff]; 
      newStr=[NSString stringWithFormat:@"%@%@%@",newStr,[dic[@"longitude"] isEqualToString:@""]?@" ":dic[@"longitude"],separatestuff]; 
      newStr=[NSString stringWithFormat:@"%@%@%@",newStr,[dic[@"id"] isEqualToString:@""]?@" ":dic[@"id"],separatestuff]; 
      newStr=[NSString stringWithFormat:@"%@%@",newStr,[dic[@"image"] isEqualToString:@""]?@" ":dic[@"image"]]; 

      [newMarr1 addObject:newStr]; 

     } 
     //NSLog(@"NEW Array: %@",newMarr); 
     [self.coordinateQuadTree buildTree:newMarr1]; 
    } 
} 

-(void)annotationsmode2:(NSMutableArray*)marr 
{ 
    if(marr.count>0) 
    { 
     NSMutableArray *newMarr=[NSMutableArray new]; 
     NSString *separatestuff2=@">>>>>>>>"; 
     for(NSMutableDictionary *dic in marr) 
     { 
      NSString *newStr=[NSString stringWithFormat:@"%@%@",[dic[@"lat"] isEqualToString:@""]?@" ":dic[@"lat"],separatestuff2]; 
      newStr=[NSString stringWithFormat:@"%@%@%@",newStr,[dic[@"lang"] isEqualToString:@""]?@" ":dic[@"lang"],separatestuff2]; 
      newStr=[NSString stringWithFormat:@"%@%@%@",newStr,[dic[@"id"] isEqualToString:@""]?@" ":dic[@"id"],separatestuff2]; 
      newStr=[NSString stringWithFormat:@"%@%@",newStr,[dic[@"image"] isEqualToString:@""]?@" ":dic[@"image"]]; 
      [newMarr addObject:newStr]; 
     } 

     //NSLog(@"NEW Array: %@",newMarr); 
     [self.coordinateQuadTree buildTree:newMarr]; 
    } 

} 

UPDATE：這是代碼塊，其中TBDataFromLine使用

- (void)buildTree:(NSMutableArray *)lines 
{ 
    @autoreleasepool { 

     NSInteger count = lines.count - 1; 

     TBQuadTreeNodeData *dataArray = malloc(sizeof(TBQuadTreeNodeData) * count); 
     for (NSInteger i = 0; i < count; i++) { 
      dataArray[i] = TBDataFromLine(lines[i]); 
     } 
     //TBBoundingBox world = TBBoundingBoxMake(19, -166, 72, -53); 
     TBBoundingBox world = TBBoundingBoxMake(0,0,100,100); 
     _root = TBQuadTreeBuildWithData(dataArray, count, world, 4); 
    } 
} 

我一直在這個問題上幾個小時，現在，仍然沒有任何線索。

更新：這是調試器的日誌中我得到

2015-06-20 19:40:23.759 MapProject[13426:395344] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFDictionary componentsSeparatedByString:]: unrecognized selector sent to instance 0x7fdf93775680' 
*** First throw call stack: 
(
    0 CoreFoundation      0x0000000112699c65 __exceptionPreprocess + 165 
    1 libobjc.A.dylib      0x00000001121c3bb7 objc_exception_throw + 45 
    2 CoreFoundation      0x00000001126a10ad -[NSObject(NSObject) doesNotRecognizeSelector:] + 205 
    3 CoreFoundation      0x00000001125f713c ___forwarding___ + 988 
    4 CoreFoundation      0x00000001125f6cd8 _CF_forwarding_prep_0 + 120 
    5 MapProject 0x000000010f469ac4 TBDataFromLine + 84 
    6 MapProject 0x000000010f46a36f -[TBCoordinateQuadTree buildTree:] + 191 
    7 MapProject 0x000000010f3d2503 -[MMViewController findSpot:] + 771 
    8 UIKit        0x0000000110a52da2 -[UIApplication sendAction:to:from:forEvent:] + 75 
    9 UIKit        0x0000000110b6454a -[UIControl _sendActionsForEvents:withEvent:] + 467 
    10 UIKit        0x0000000110b63919 -[UIControl touchesEnded:withEvent:] + 522 
    11 UIKit        0x0000000110a9f998 -[UIWindow _sendTouchesForEvent:] + 735 
    12 UIKit        0x0000000110aa02c2 -[UIWindow sendEvent:] + 682 
    13 UIKit        0x0000000110a66581 -[UIApplication sendEvent:] + 246 
    14 UIKit        0x0000000110a73d1c _UIApplicationHandleEventFromQueueEvent + 18265 
    15 UIKit        0x0000000110a4e5dc _UIApplicationHandleEventQueue + 2066 
    16 CoreFoundation      0x00000001125cd431 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17 
    17 CoreFoundation      0x00000001125c32fd __CFRunLoopDoSources0 + 269 
    18 CoreFoundation      0x00000001125c2934 __CFRunLoopRun + 868 
    19 CoreFoundation      0x00000001125c2366 CFRunLoopRunSpecific + 470 
    20 GraphicsServices     0x000000011444da3e GSEventRunModal + 161 
    21 UIKit        0x0000000110a51900 UIApplicationMain + 1282 
    22 MapProject 0x000000010f474c2f main + 111 
    23 libdyld.dy 
) 
libc++abi.dylib: terminating with uncaught exception of type NSException 

Answer 1

添加例外破發點，而且需要精確到行，其中那一聲正在發生。還檢查'行'，因爲它被更改爲字典，但你的代碼期望它 是一個字符串

Answer 2

NSArray或NSMutableArray沒有[]運算符。

你需要這樣的：

for (NSInteger i = 0; i < count; i++) { 
    dataArray[i] = TBDataFromLine([lines objectAtIndex:i]); 
} 

使用上的[]的NSArray *有效地表現得像「線」是一個真正的指針的NSMutableArray實例的數組，而你想要得到的項目之一出來的它指向的數組。