1、addEntriesFromDictionary在字典中的用法：

NSMutableDictionary *dic1 = [NSMutableDictionary dictionaryWithObjectsAndKeys:@"BMW",@"CarLogo",@"Red",@"CarColor", nil]; NSDictionary *dic2 = [NSDictionary dictionaryWithObjectsAndKeys:@"Xiaoming",@"name",@"28", @"age",nil]; [dic1 addEntriesFromDictionary:dic2]; NSLog(@"%@",dic1); 看打印结果：

        

2、结论

就是拼接字典用的。addEntriesFromDictionary是NSMutableDictionary的一个方法。