iphone - 如何以编程方式使 UIToolbar 覆盖？

Question

我的大部分相机覆盖屏幕都被不透明的覆盖层覆盖。对于剩余部分，我想添加一个带有多个按钮的 UIToolbar。请务必提及如何以编程方式使这些按钮也可点击!

这是我添加叠加层的方式，它看起来很完美。

- (UIView*)CommomOverlay  {
    //Both of the 428 values stretch the overlay bottom to top for overlay function. It doesn't cover it. 
    UIView* view = [[UIView alloc] initWithFrame:CGRectMake(0,0,320,428)];
    UIImageView *FrameImg = [[UIImageView alloc] initWithFrame:CGRectMake(0,0,320,428)];
    [FrameImg setImage:[UIImage imageNamed:@"newGraphicOverlay.png"]];
    [view addSubview:FrameImg];
    return view; 
}

同样，我将如何添加一个工作工具栏(可点击且功能齐全，上面有 2 个按钮)？

Answer 1

试试这个:(在您的 viewDidLoad 或 viewWillAppear 中)

//create toolbar and set origin and dimensions
UIToolbar *toolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 428, 320, 32)];

//create buttons and set their corresponding selectors
UIBarButtonItem *button1 = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh target:self action:@selector(button1Tap:)];
UIBarButtonItem *button2 = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemRewind target:self action:@selector(button2Tap:)];

//if you want custom icons, use something like this:
UIBarButtonItem *button3 = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"icon1_portrait.png"] landscapeImagePhone:[UIImage imageNamed:@"icon1_landscape.png"] style:UIBarButtonItemStylePlain target:self action:@selector(button3Tap:)];

//add buttons to the toolbar
[toolbar setItems:[NSArray arrayWithObjects:button1, button2, nil]];

//add toolbar to the main view
[self.view addSubview:toolbar];

• 像这样创建选择器:

  -(void)button1Tap:(id)sender {
      NSLog(@"Button 1 was tapped!");
      // do whatever needs to happen
  }