Question

我需要添加一个透明的工具栏，并在其上添加4个带图像的按钮。我怎么能通过代码来做到这一点？

到目前为止我的工作;

我添加了工具栏并使其透明现在我想添加带图像的4个按钮。我怎样才能做到这一点？（这4个按钮也应该有action方法，所以当一个人点击它时，应该启动一个动作）

toolBar1 = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 320 , 320 , 60)];

[toolBar1 setBarStyle:UIBarStyleBlack];

[toolBar1 setTranslucent:YES];

NSMutableArray* allthebuttons = [[NSMutableArray alloc] initWithCapacity:4];

UIBarButtonItem *buttonWithImage = [[UIBarButtonItem alloc] ...... // Now what ??

[self.view addSubview:toolBar1];

Answer 1

UIBarButtonItem *item1 = [[UIBarButtonItem alloc] initWithTitle:@"Item" style:UIBarButtonItemStyleBordered target:self action:@selector(action];

UIBarButtonItem *item2 = [[UIBarButtonItem alloc] initWithTitle:@"Item1" style:UIBarButtonItemStyleBordered target:self action:@selector(action];

NSArray *buttons = [NSArray arrayWithObjects: item1, item2, nil];
[toolBar setItems: buttons animated:NO];

[item1 release];
[item2 release];

只需为4个按钮制作上面的代码

更新1：

使用以下代码获取按钮中的图像

UIImageView *btn1Img = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"Btn1Img"]];

UIBarButtonItem *item1 = [[UIBarButtonItem alloc] initWithCustomView:btn1Img];

Answer 2

NSMutableArray *buttonsArray = [[NSMutableArray alloc] init];
UIBarButtonItem *myButton1=[[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"email.png"] style:UIBarButtonItemStylePlain target:self action:@selector(toolbarButtonPressed1:)];
[buttonsArray addObject:myButton1];
UIBarButtonItem *myButton2 = [[UIBarButtonItem alloc] initWithTitle:@"button 2" style:UIBarButtonItemStylePlain target:self action:@selector(toolbarButtonPressed2:)];  
[buttonsArray addObject:myButton2];
[self setToolbarItems:buttonsArray animated:YES];

注意，对于上述内容，您需要使用导航视图控制器上的工具栏。

向工具栏添加按钮

2 个答案: