iphone - 打印 NSDictionary 中键的值

Question

到目前为止我所拥有的是

NSArray *keys = [NSArray arrayWithObjects:@"firstName",@"lastName",@"phoneNumber",@"email",@"password",nil];

NSArray *objects = [NSArray arrayWithObjects:@"nil",@"nil",@"nil",@"nil",@"abc",nil];

dictionary = [NSDictionary dictionaryWithObject:objects forKey:keys];

NSLog(@"pass is %@",[keys objectAtIndex:4]);

NSLog(@"value of pass is%@",[dictionary objectForKey:@"password"]);

但是，我从调试器得到的是

pass is password

value of pass is (null)

任何人都可以解释为什么该值为 null。它应该是 abc，不应该吗？

Answer 1

下面的行会发出警告:

字典 = [NSDictionarydictionaryWithObject:objects forKey:keys];

它应该是:

NSDictionary *dictionary = [NSDictionarydictionaryWithObjects:objects forKeys:keys];