Question

在我的应用程序中，我有一个视图弹出当前视图以帮助用户（如果需要）。问题是：在iPhone 4上，该视图的关闭按钮看起来不错，而在iPhone 3GS上它有一个小突起。我不知道为什么。复选框也会发生同样的事情。

以下是Picasa相册中的图片（有2张图片，一张名为iPhone 3GS，另一张是iPhone 4，请看关闭按钮上方的凹凸和iPhone 3GS图片中的复选框。）

https://picasaweb.google.com/103964563927969565521/StackoverflowPosts?authkey=Gv1sRgCKWHu6mKj4OS5AE

这是用于创建关闭按钮的代码：

// Close button
    closeButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];

    float xCor = self.frame.size.width - kViewMargins - kCloseButtonWidth;
    float yCor = y + ((self.frame.size.height - y) / 2 - kCloseButtonHeight / 2);

    closeButton.frame = CGRectMake(xCor,
                                   yCor,
                                   kCloseButtonWidth,
                                   kCloseButtonHeight);  

    [closeButton setTitle:kClose forState:UIControlStateNormal];
    [closeButton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    [[closeButton titleLabel] setFont:[UIFont boldSystemFontOfSize:kQuickTipTitleFontSize]];
    [closeButton setBackgroundImage:[UIImage imageNamed:@"close_button.png"] forState:UIControlStateNormal]; 
    [closeButton addTarget:self action: @selector (doneButtonClick)  forControlEvents: UIControlEventTouchUpInside]; 
    [self addSubview:closeButton];

我不知道该怎么办，请帮忙。

谢谢，沙乌尔。

Answer 1

我猜是因为我看不到你的close_button.png文件，但我认为问题是你的close_button.png和你正在创建的按钮大小不同，你看到的凹凸是默认的绘图圆形矩形按钮。

Answer 2

嗯，看起来有点像RoundRect默认绘图正如Jon所说的那样从你的图形后面流出。我建议您将按钮类型更改为 UIButtonTypeCustom ，而不是弄乱图形：

closeButton = [UIButton buttonWithType:UIButtonTypeCustom];

这将在您设置的图形和文本之外创建一个NO ui元素的按钮。

Answer 3

closeButton = [UIButton buttonWithType:UIButtonTypeCustom];
UIImage* closeImage = [UIImage imageNamed:@"close_button.png"];
float xCor = self.frame.size.width - kViewMargins - kCloseButtonWidth;
float yCor = y + ((self.frame.size.height - y) / 2 - kCloseButtonHeight / 2);

closeButton.frame = CGRectMake(xCor,
                               yCor,
                               closeImage.size.width/2,
                               closeImage.Size.height/2);  

[closeButton setTitle:kClose forState:UIControlStateNormal];
[closeButton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[[closeButton titleLabel] setFont:[UIFont boldSystemFontOfSize:kQuickTipTitleFontSize]];
[closeButton setBackgroundImage:closeImage  forState:UIControlStateNormal]; 
[closeButton addTarget:self action: @selector (doneButtonClick)  forControlEvents: UIControlEventTouchUpInside]; 
[self addSubview:closeButton];
[closeButton release]; /// you must release the closeButton

控制在iPhone 4上看起来不错，但在iPhone 3GS上看起来很糟糕，为什么？

3 个答案: