如何在按钮之间创建空间?

问题描述

我已经创建了多个按钮，但是我不知道如何对齐按钮.

I am already creating multiple buttons but I don't know how to align the buttons.

我的代码在这里:

- (void)viewDidLoad
{
//self.title=@"Asset Management";
[super viewDidLoad];

listOfItems = [[NSMutableArray alloc] init];

[listOfItems addObject:@"User Information"];
[listOfItems addObject:@"Regional Settings"];
[listOfItems addObject:@"Configuration"];

toolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 20, 320, 44)];
//UIToolbar* toolbar = [[UIToolbar alloc] initWithFrame:CGs
toolbar.tintColor = [UIColor clearColor];
[toolbar setTranslucent:YES];

// create the array to hold the buttons, which then gets added to the toolbar
NSMutableArray* buttons = [[NSMutableArray alloc] initWithCapacity:3];

// Create button1
UIBarButtonItem *propertiesButton = [[UIBarButtonItem alloc]
                    initWithBarButtonSystemItem:UIBarButtonSystemItemSearch target:self action:@selector(button1Pressed)];
[buttons addObject:propertiesButton];
[propertiesButton release];

// Create button2
UIBarButtonItem *commentaryButton = [[UIBarButtonItem alloc]
                    initWithBarButtonSystemItem:UIBarButtonSystemItemCompose target:self action:@selector(button2Pressed)];
[buttons addObject:commentaryButton];
[commentaryButton release];

// Create button3
UIBarButtonItem *versionsButton = [[UIBarButtonItem alloc]
                  initWithBarButtonSystemItem:UIBarButtonSystemItemCancel target:self action:@selector(button3Pressed)];
[buttons addObject:versionsButton];
[versionsButton release];

// stick the buttons in the toolbar
[toolbar setItems:buttons animated:NO];
//self.toolbarItems = buttons;
[buttons release];

// and put the toolbar in the nav bar
[[self navigationItem] setRightBarButtonItem:[[[UIBarButtonItem alloc] initWithCustomView:toolbar] autorelease]];
[toolbar release];

}

如何在按钮的空白处创建空格.请帮助我.提前致谢！

How do I create space b/w the buttons. Pls help me.Thanks in advance!

推荐答案

您可以使用两种内置空格按钮类型之一在工具栏项之间添加空格 UIBarButtonSystemItemFixedSpace 和 UIBarButtonSystemItemFlexibleSpace .

You can add spaces between tool bar items using either of the two built-in space button typesUIBarButtonSystemItemFixedSpace and UIBarButtonSystemItemFlexibleSpace.

固定空间按钮

UIBarButtonItem *fixedSpace = [[UIBarButtonItem alloc]
                   initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace
                                        target:nil
                                        action:nil];
[fixedSpace setWidth:20];

弹性空间按钮

UIBarButtonItem *flexibleSpace = [[UIBarButtonItem alloc]
                initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace
                                     target:nil
                                     action:nil];

在其他工具栏项目之间添加空格键.

Add the space bar buttons in between the other tool bar items.

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