Question

不确定我在这里做错了什么。当我尝试通过特定键或所有键检查字典时，我得到错误或null。（我知道我正在使用一个字符串，我可以使用布尔值作为条件我就像检查那样说真或假而不是YES和NO。将它添加到我的OCD列表。：D）activePlayer设置在awakeFromNib方法中，可以使用P1和P2之间的弹出按钮进行切换。

- (IBAction)setPlayer:(id)sender {

 haserror = @"false";
 errmsg = [NSMutableString stringWithCapacity:0];
 [errmsg retain];
 [errmsg appendString: @"There was a problem setting your team up\n\n"];
 thisTeamName = [txtTeamName stringValue];
 thisTeamColor = [pdTeamColor itemTitleAtIndex:[pdTeamColor indexOfSelectedItem]];

 //validate form
 if ([thisTeamName isEqualToString:@""]) {
  haserror = @"true";
  [errmsg appendString: @"You must enter a team name\n\n"];
 }

 if ([thisTeamColor isEqualToString:@"Select A Color"]) {
  haserror = @"true";
  [errmsg appendString: @"You must select a team color\n\n"];
 }

 //check for errors
 if (haserror == @"true")  {
  [self showAlert: errmsg];
 } else { 

  //set up treasury
  treasury = 1000;

  //convert to string for display
  [lblTreasury setStringValue: [NSString stringWithFormat:@"$%i", treasury] ];


  //add items to dictionary
  if (activePlayer == @"1") { 

   [p1TeamData setObject:thisTeamName forKey:@"teamName"];
   [p1TeamData setObject:thisTeamColor forKey:@"teamColor"];
   [p1TeamData setObject:[NSString stringWithFormat:@"%i", treasury] forKey:@"cash"];
  } else { 
   [p2TeamData setObject:thisTeamName forKey:@"teamName"];
   [p2TeamData setObject:thisTeamColor forKey:@"teamColor"];
   [p2TeamData setObject:[NSString stringWithFormat:@"%i", treasury] forKey:@"cash"];
  }

  NSLog(@"%@", [p1TeamData allKeys]);  

 }

 [errmsg release];
}

[编辑：这是.h文件]

@interface GameController :NSObject {

IBOutlet id btnSaveData;
IBOutlet id lblTreasury;
IBOutlet id pdPickPlayer;
IBOutlet id pdTeamColor;
IBOutlet id txtTeamName;

int activePlayer;
NSString* activePlayerName;
NSString* activePlayerTeamColor;
int  treasury;

NSMutableDictionary* p1TeamData;
NSMutableDictionary* p2TeamData;

NSArray* players;
NSArray* teamColors;
NSArray* unittypes;

NSString* thisTeamName;
NSString* thisTeamColor;

NSMutableString* errmsg;
NSString* haserror;

}

- （void）awakeFromNib; - （IBAction）getPlayer：（id）sender; - （IBAction）setPlayer：（id）sender; - （void）showAlert：（NSMutableString *）m; @end

Answer 1

确保使用-initXXX方法初始化集合。如果没有，他们将被分配到nil。

-(id)initXXX:... {
   if ((self = [super initYYY:...])) {
     ...
     p1TeamData = [[NSMutableDictionary alloc] init];
     p2TeamData = [[NSMutableDictionary alloc] init];
     ...
   }
   return self;
}

如果你想要的只是“真”和“假”，那就自己定义吧。这不是使用字符串而不是BOOL的原因。事实上，除了YES和NO。

之外，基金会已经定义了TRUE和FALSE

另外，请使用activePlayer的整数。

您应该始终将NSString与-isEqualToString:进行比较，而不是==。

if ([haserror isEqualToString:@"true"])

...

if ([activePlayer isEqualToString:@"1"])

这应该是p1TeamData始终为零的原因，因为activePlayer == @"1"不可靠，并且可能会将玩家1的内容分配给p2TeamData。

Objective-c：NSMutableDictionary setObject不起作用

1 个答案: