导航栏中的iphone 2按钮

我有一个导航栏（带导航），导航栏上有两个按钮，但如果我将其中一个按钮分配到左侧，我的导航按钮将消失（doughh）， 那我怎么能有，我的导航按钮，还有另外两个按钮呢？ 下面是我使用的代码：

从视图下载

UIButton* infoButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
infoButton.frame = CGRectMake(0, 10, 40, 30);
UIImage *img = [UIImage imageNamed:@"eye.png"];
[infoButton setImage:img forState:UIControlStateNormal]; [img release];
//[infoButton setTitle:@"xuxu"forState:UIControlStateNormal];
[infoButton addTarget:self action:@selector(infoButtonAction) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *modalButton = [[UIBarButtonItem alloc] initWithCustomView:infoButton];
[self.navigationItem setRightBarButtonItem:modalButton animated:YES];
[modalButton release];


UIButton* iButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
iButton.frame = CGRectMake(0, 10, 40, 30);
UIImage *imag = [UIImage imageNamed:@"eye.png"];
[iButton setImage:imag forState:UIControlStateNormal]; [imag release];
//[infoButton setTitle:@"xuxu"forState:UIControlStateNormal];
[infoButton addTarget:self action:@selector(infoButtonAction) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *modalButton2 = [[UIBarButtonItem alloc] initWithCustomView:iButton];
[self.navigationItem setLeftBarButtonItem:modalButton2 animated:YES];
[modalButton2 release];

所以我的第二个按钮设置为

巴布托宁

有没有像setCenter这样的东西？？或者用x，y设置位置的方法？？ 我需要2个按钮将我的按钮保持在左侧，以便导航（3个按钮）

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谢谢大家!

使用此代码了解如何在导航栏上添加两个或更多按钮

UIButton* infoButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    infoButton.frame = CGRectMake(0, 10, 40, 30);
    UIImage *img = [UIImage imageNamed:@"eye.png"];
    [infoButton setImage:img forState:UIControlStateNormal]; [img release];
    [infoButton setTitle:@"xuxu"forState:UIControlStateNormal];
    [infoButton addTarget:self action:@selector(infoButtonAction) forControlEvents:UIControlEventTouchUpInside];
    UIBarButtonItem *modalButton = [[UIBarButtonItem alloc] initWithCustomView:infoButton];
    [self.navigationItem setRightBarButtonItem:modalButton animated:YES];
    [modalButton release];


    UIButton* iButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    UIButton* aButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    aButton.frame = CGRectMake(0, 10, 40, 30);
    iButton.frame = CGRectMake(42, 10, 40, 30);
    UIImage *imag = [UIImage imageNamed:@"eye.png"];
    [iButton setImage:imag forState:UIControlStateNormal]; 
     [aButton setImage:imag forState:UIControlStateNormal]; 
    [imag release];
    [infoButton setTitle:@"xuxu"forState:UIControlStateNormal];


    [iButton addTarget:self action:@selector(infoButtonAction) forControlEvents:UIControlEventTouchUpInside];
    [aButton addTarget:self action:@selector(infoButtonAction) forControlEvents:UIControlEventTouchUpInside];
    UIView *viewForAdd=[[UIView alloc] initWithFrame:CGRectMake(0,0,100,50)];
    [viewForAdd addSubview:iButton];
    [viewForAdd addSubview:aButton];
    UIBarButtonItem *modalButton2 = [[UIBarButtonItem alloc] initWithCustomView:viewForAdd];
    [self.navigationItem setLeftBarButtonItem:modalButton2 animated:YES];
    [modalButton2 release];

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你需要三个按钮，左边2个，右边1个。非常感谢你，这正是我需要的，能够设置x位置，干杯