iphone - 他们如何在 iPhone 应用程序的附加图片中实现这种按钮？

Question

大家好，
我需要帮助来创建如上图所示的按钮。 它们是多个按钮，用于切换到另一个 View ，下一个按钮用于显示隐藏按钮。

我想知道要使用哪个 UI 控件。
首选免费的即用型控件或代码示例。

非常感谢。

我按照 Mayur Joshi 的建议做了，但不明白为什么我不能在 ScrollView 中滚动按钮并且按钮上没有文字。

这是我的代码

- (void)viewDidLoad
{
    [super viewDidLoad];




    [scrollView setContentSize:CGSizeMake(500.0f, 50.0f)];
    [self.view addSubview: scrollView];

    UIButton *button1 = [UIButton buttonWithType: UIButtonTypeRoundedRect];
    [button1 setTitle:@"Button1" forState:UIControlStateNormal];

    [button1 setFrame:CGRectMake(0.0F, 0.0F, 100.0F, 50.0F)];
    [scrollView addSubview:button1];
    [button1 release];


    UIButton *button2 = [UIButton buttonWithType: UIButtonTypeRoundedRect];
    [button2 setTitle:@"Button2" forState:UIControlStateNormal];

    [button2 setFrame:CGRectMake(100.0F, 0.0F, 100.0F, 50.0F)];
    [scrollView addSubview:button2];

    [button2 release];


    UIButton *button3 = [UIButton buttonWithType: UIButtonTypeRoundedRect];
    [button3 setTitle:@"Button3" forState:UIControlStateNormal];

    [button3 setFrame:CGRectMake(200.0F, 0.0F, 100.0F, 50.0F)];
    [scrollView addSubview:button3];

    [button3 release];

    UIButton *button4 = [UIButton buttonWithType: UIButtonTypeRoundedRect];
    [button4 setTitle:@"Button4" forState:UIControlStateNormal];

    [button4 setFrame:CGRectMake(300.0F, 0.0F, 100.0F, 50.0F)];
    [scrollView addSubview:button4];

    [button4 release];

    UIButton *button5 = [UIButton buttonWithType: UIButtonTypeRoundedRect];
    [button5 setTitle:@"Button5" forState:UIControlStateNormal];

    [button5 setFrame:CGRectMake(400.0F, 0.0F, 100.0F, 50.0F)];
    [scrollView addSubview:button5];

    [button5 release];


}

you can download source code here

这是应用程序屏幕截图。

Answer 1

只需从按钮中删除释放方法即可。

实际上，当您声明按钮时

 UIButton* btn1 = [UIButton buttonWithType: UIButtonTypeRoundedRect];

它作为类方法而不是静态方法已经处于自动 Release模式。所以你不需要写

 [btn1 release];