需要创建日历的指导吗

我必须在iPhone应用程序中使用日历。我努力了,但是在iphonesdk中找不到任何内置的API。现在我要自己创建日历,需要一些指导。

我已经创建了5行7个按钮(即,35个按钮在所有),并将使用它作为日期,然后我将添加其他图形的日子和月份。我已经将这些按钮放在一个数组中,并将在一个循环中添加/更改它们的属性。

btnCal29=[[UIButton alloc]initWithFrame:CGRectMake(22.0f, 312.0f, 35.0f, 35.0f)];
btnCal30=[[UIButton alloc]initWithFrame:CGRectMake(62.0f, 312.0f, 35.0f, 35.0f)];
btnCal31=[[UIButton alloc]initWithFrame:CGRectMake(102.0f, 192.0f, 35.0f, 35.0f)];
btnCal32=[[UIButton alloc]initWithFrame:CGRectMake(142.0f, 192.0f, 35.0f, 35.0f)];
btnCal33=[[UIButton alloc]initWithFrame:CGRectMake(182.0f, 192.0f, 35.0f, 35.0f)];
btnCal34=[[UIButton alloc]initWithFrame:CGRectMake(222.0f, 192.0f, 35.0f, 35.0f)];
btnCal35=[[UIButton alloc]initWithFrame:CGRectMake(262.0f, 192.0f, 35.0f, 35.0f)];

arrCalendarbutton = [[NSMutableArray alloc] initWithObjects:btnCal1,btnCal2,btnCal3,btnCal4,btnCal5,btnCal6,btnCal7,btnCal8,btnCal9,btnCal10,btnCal11,btnCal12,btnCal13,btnCal14,nil];

for(int i = 0; i<[arrCalendarbutton count];i++)
{
    [(UIButton *)[arrCalendarbutton objectAtIndex:i] setBackgroundColor:[UIColor lightGrayColor]];
    [(UIButton *)[arrCalendarbutton objectAtIndex:i] addTarget:self action:@selector(cal) forControlEvents:UIControlEventTouchUpInside];
    [(UIButton *)[arrCalendarbutton objectAtIndex:i] setTitle:[NSString stringWithFormat:@"%d",i+1] forState:UIControlStateNormal];
    //[(UIButton *)[arrCalendarbutton objectAtIndex:i] setTitle:@"11" forState:UIControlStateNormal];
    [self.view addSubview: (UIButton *)[arrCalendarbutton objectAtIndex:i]];
}

我使用上面的代码来显示按钮(这里没有为所有按钮添加代码)。我当然会改变标题的按钮上后来的变化,但现在我只专注于设计。

我走的方向对吗?有更好的办法吗?