插入带nsDictionaries的nsmutableDictionary

nsmutabledictionary*einnahmen=[[nsmutabledictionary alloc]initwitcapacity:20];
nsarray*对象=[nsarray arrayWithObjects:
姓名,
[nsnumber numberWithint:x],
[nsnumber numberwithint:y],
[nsnumber numberwithint:z],
零;
nsarray*keys=[nsarray arrayWithObjects:
@“姓名”,
“StjjaHr”,
“Zin”
@“Entnahmefaeheig”,
零;
nsdictionary*entry=[nsdictionary dictionary withobjects:对象forkeys:键];

[einnahmen setobject:entry forkey:@“name”];//似乎不起作用
< /代码> 

在[einnahmen setobject:entry调试器显示以下内容之后:


. 没有错误,但它不能工作,它仍然是空的。

以下是我的代码:

NSMutableDictionary *einnahmen = [[NSMutableDictionary alloc] initWithCapacity:20];
NSArray *objects = [NSArray arrayWithObjects:
            name, 
            [NSNumber numberWithInt: x], 
            [NSNumber numberWithInt: y], 
            [NSNumber numberWithInt: z], 
            nil];
NSArray *keys = [NSArray arrayWithObjects:
                     @"name", 
                     @"startJahr",
                     @"zins", 
                     @"entnahmefaehig",
                     nil];
NSDictionary *entry = [NSDictionary dictionaryWithObjects:objects forKeys:keys];

[einnahmen setObject:entry forKey:@"name"]; //seems not to work


后[einnahmen setObject:entry调试器显示: