是否可以在 iPhone 上的 UIToolBar 上放置一个按钮？

发布于 2024-10-03 07:58:54 字数 625 浏览 5 评论 0原文

我想在 UIToolBar 的中心位置放置一个按钮。我必须在以下代码中进行哪些更改？

CGRect toolbarFrame = CGRectMake(0, 0, self.view.frame.size.width, 44);
UIToolbar *mytoolbar = [[UIToolbar alloc] initWithFrame:toolbarFrame];
mytoolbar.autoresizingMask =  UIViewAutoresizingFlexibleWidth;
mytoolbar.tintColor = [UIColor blackColor];
UIBarButtonItem *button = [[UIBarButtonItem alloc] initWithTitle:@"button 1"
                           style:UIBarButtonItemStylePlain target:self action:nil];
NSMutableArray *tools = [[NSMutableArray alloc] initWithObjects:button,nil];
[mytoolbar setItems:tools];
[self.view addSubview:mytoolbar];

原文

I want to put a button on UIToolBar at the center position. What changes do I have to make in the following code?

CGRect toolbarFrame = CGRectMake(0, 0, self.view.frame.size.width, 44);
UIToolbar *mytoolbar = [[UIToolbar alloc] initWithFrame:toolbarFrame];
mytoolbar.autoresizingMask =  UIViewAutoresizingFlexibleWidth;
mytoolbar.tintColor = [UIColor blackColor];
UIBarButtonItem *button = [[UIBarButtonItem alloc] initWithTitle:@"button 1"
                           style:UIBarButtonItemStylePlain target:self action:nil];
NSMutableArray *tools = [[NSMutableArray alloc] initWithObjects:button,nil];
[mytoolbar setItems:tools];
[self.view addSubview:mytoolbar];

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A君 2024-10-10 07:58:55

创建一个 UIBarButtonSystemItemFlexibleSpace 类型的栏按钮。

UIBarButtonItem *spaceButton =
    [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace
                             target:nil action:nil];
UIBarButtonItem *button =
    [[UIBarButtonItem alloc] initWithTitle:@"button 1" style:UIBarButtonItemStylePlain
                             target:self action:nil];
NSMutableArray *tools =
    [[NSMutableArray alloc] initWithObjects:spaceButton, button, spaceButton,nil];
[mytoolbar setItems:tools];

Create one bar button of UIBarButtonSystemItemFlexibleSpace type.

UIBarButtonItem *spaceButton =
    [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace
                             target:nil action:nil];
UIBarButtonItem *button =
    [[UIBarButtonItem alloc] initWithTitle:@"button 1" style:UIBarButtonItemStylePlain
                             target:self action:nil];
NSMutableArray *tools =
    [[NSMutableArray alloc] initWithObjects:spaceButton, button, spaceButton,nil];
[mytoolbar setItems:tools];

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