Question

我想创建一个acustom导航栏。

我知道我们可以在导航栏中间使用UIButton而不是标题，但是我们可以制作看起来像这张照片的东西吗？

如您所见，此导航栏中间有三个不同的按钮。你能跟我分享一下我们如何在iPhone上实现这样的事情吗？

Answer 1

假设您使用的是导航控制器，您可以将navigationBar的titleView属性设置为UIView容器，该容器包含中间的三个按钮（以及两组三个点）。代码看起来像这样：

    UIView *buttonContainer = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 200, 44)];
    buttonContainer.backgroundColor = [UIColor clearColor];
    UIButton *button0 = [UIButton buttonWithType:UIButtonTypeCustom];
    [button0 setFrame:CGRectMake(0, 0, 44, 44)];
    [button0 setBackgroundImage:[UIImage imageNamed:@"button0.png"] forState:UIControlStateNormal];
    [button0 addTarget:self action:@selector(button0Action:) forControlEvents:UIControlEventTouchUpInside];
    [button0 setShowsTouchWhenHighlighted:YES];
    [buttonContainer addSubview:button0];

    //add your spacer images and button1 and button2...

    self.navigationItem.titleView = buttonContainer;

或者你当然可以在IB中完成这一切。

Answer 2

如果您正在使用UINavigationController

，请尝试此操作

使用[self.navigationController.navigationBar setBackgroundImageForBarMetrics:]
使用[self.navigationItem setLeftBarButtonItem:]和[self.navigationItem setRightBarButtonItem:]设置左右按钮。您可能必须使用UIBarButtonItem和UIButton作为自定义视图来摆脱边界。
像这样设置中间的三个按钮

（您可能需要更改尺寸）

UIView *buttonView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 180, 40)];
UIButton *button1 = [UIButton buttonWithType:UIButtonTypeCustom];
button1.imageView.image = [UIImage imageNamed:@"button1.png"];
button1.frame = CGRectMake(0, 0, 40, 40);

UIButton *button2 = [UIButton buttonWithType:UIButtonTypeCustom];
button2.imageView.image = [UIImage imageNamed:@"button2.png"];
button2.frame = CGRectMake(70, 0, 40, 40);

UIButton *button3 = [UIButton buttonWithType:UIButtonTypeCustom];
button3.imageView.image = [UIImage imageNamed:@"button3.png"];
button3.frame = CGRectMake(140, 0, 40, 40);

[buttonView addSubview:button1];
[buttonView addSubview:button2];
[buttonView addSubview:button3];

self.navigationItem.titleView = buttonView;

导航栏中间的按钮

2 个答案: