获取dictionary指定关键字的值

数据如下，我想不循环获取 names= app,app1,app2这种。应该怎么实现？

(
        {
        date = "12/12/12";
        name = app;
    },
        {
        date = "11/02/12";
        name = app1;
    },
        {
        date = "14/05/12";
        name = app2;
    }
)

你的问题不具体，程序代码没看明白，写清楚一点哦？

NSString *str=[[array1 valueForKeyPath:@"name"] componentsJoinedByString:@","];
NSLog(@"desired string:%@",str);


NSMutableDictionary *dict = [[NSMutableDictionary alloc]init];
    [dict setObject:@"app" forKey:@"name"];

    NSMutableDictionary *dict1 = [[NSMutableDictionary alloc]init];
    [dict1 setObject:@"app1" forKey:@"name"];


    NSMutableDictionary *dict2 = [[NSMutableDictionary alloc]init];
    [dict2 setObject:@"app2" forKey:@"name"];
    NSArray *array1 = [[NSArray alloc]initWithObjects:dict,dict1,dict2, nil];

    NSString *str=[[array1 valueForKeyPath:@"name"] componentsJoinedByString:@","];
    NSLog(@"desired string:%@",str);

    O/P:- app,app1,app2