iOS - UIToolbar

前言

    NS_CLASS_AVAILABLE_IOS(2_0) __TVOS_PROHIBITED @interface UIToolbar : UIView <UIBarPositioning>
    @available(iOS 2.0, *)                         public class UIToolbar : UIView, UIBarPositioning
  • 工具条控件 UIToolbar 用做工具条按钮项(UIBarButtonItem)的容器,可以盛放一个或者多个工具条按钮项,一般放置在界面顶部或者底部。如果要针对工具条按钮项自定义视图,可以使用 UIToolbarDelegate 设置。

1、UIToolbar 的创建

  • Objective-C

        // 创建 UIToolbar 工具条,工具条上面可以放一些导航专用按钮项
        UIToolbar *toolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 20, self.view.bounds.size.width, 44)];
        [self.view addSubview:toolbar];
    
        // 创建工具条 UIBarButtonItem 按钮项
    
        // 创建编辑按钮
        UIBarButtonItem *editButton = [[UIBarButtonItem alloc] 
                                       initWithBarButtonSystemItem:UIBarButtonSystemItemEdit 
                                                            target:self 
                                                            action:@selector(editClick)];
    
        // 创建刷新按钮
        UIBarButtonItem *refreshButton = [[UIBarButtonItem alloc] 
                                           initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh 
                                                                target:self 
                                                                action:@selector(refreshClick)];
    
        // 创建弹簧按钮
        UIBarButtonItem *flexibleButton = [[UIBarButtonItem alloc] 
                                            initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace 
                                                                 target:nil 
                                                                 action:nil];
    
        // 将按钮项添加到工具条,通过数组给工具条设置一些导航按钮
        toolbar.items = @[editButton, flexibleButton, refreshButton];
  • Swift

        // 创建 UIToolbar 工具条,工具条上面可以放一些导航专用按钮项
        let toolbar:UIToolbar = UIToolbar(frame: CGRectMake(0, 20, self.view.bounds.size.width, 44))
        self.view.addSubview(toolbar)
    
        // 创建工具条 UIBarButtonItem 按钮项
    
        // 创建编辑按钮
        let editButton:UIBarButtonItem = UIBarButtonItem(barButtonSystemItem: .Edit, 
                                                                      target: self, 
                                                                      action: #selector(UiToolbar.editClick))
    
        // 创建刷新按钮
        let refreshButton:UIBarButtonItem = UIBarButtonItem(barButtonSystemItem: .Refresh, 
                                                                         target: self, 
                                                                         action: #selector(UiToolbar.refreshClick))
    
        // 创建弹簧按钮
        let flexibleButton:UIBarButtonItem = UIBarButtonItem(barButtonSystemItem: .FlexibleSpace, 
                                                                          target:nil, 
                                                                          action:nil)
    
        // 将按钮项添加到工具条,通过数组给工具条设置一些导航按钮
        toolbar.items = [editButton, flexibleButton, refreshButton]

2、UIBarButtonItem 的创建

  • Objective-C

    • 系统类按钮

          /*
              UIBarButtonSystemItemDone,           Done
              UIBarButtonSystemItemCancel,         Cancel
              UIBarButtonSystemItemEdit,           Edit
              UIBarButtonSystemItemSave,           Save
              UIBarButtonSystemItemUndo,           Undo
              UIBarButtonSystemItemRedo,           Redo
              UIBarButtonSystemItemAdd,            加号 图标按钮
              UIBarButtonSystemItemFlexibleSpace,  弹簧 按钮,将 button 推向两边
              UIBarButtonSystemItemFixedSpace,     弹簧 按钮,将 button 推向两边,
                                                   可设间距 fixedSpaceButton.width = 50;
              UIBarButtonSystemItemCompose,        撰写 图标按钮
              UIBarButtonSystemItemReply,          答复 图标按钮
              UIBarButtonSystemItemAction,         详情 图标按钮
              UIBarButtonSystemItemOrganize,       文件夹 图标按钮
              UIBarButtonSystemItemBookmarks,      书籍 图标按钮
              UIBarButtonSystemItemSearch,         搜索 图标按钮
              UIBarButtonSystemItemRefresh,        刷新 图标按钮
              UIBarButtonSystemItemStop,           X 号 图标按钮
              UIBarButtonSystemItemCamera,         相机 图标按钮
              UIBarButtonSystemItemTrash,          删除 图标按钮
              UIBarButtonSystemItemPlay,           播放 图标按钮
              UIBarButtonSystemItemPause,          暂停 图标按钮
              UIBarButtonSystemItemRewind,         快退 图标按钮
              UIBarButtonSystemItemFastForward,    快进 图标按钮
          */
          UIBarButtonItem *done = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone 
                                                                                target:self 
                                                                                action:@selector(buttonClick)];

      iOS - UIToolbar
      iOS - UIToolbar

    • 文本类按钮

          /*
              UIBarButtonItemStylePlain        默认按钮风格;按下时会闪动
              UIBarButtonItemStyleBordered     与 UIBarButtonItemStylePlain 相同,但显示的按钮有边框, NS_ENUM_DEPRECATED_IOS
              UIBarButtonItemStyleDone         显示一个蓝色按钮,提醒用户编辑完毕时应该点触(tap)该按钮。
          */
      
          UIBarButtonItem *titleBtn = [[UIBarButtonItem alloc] initWithTitle:@"按钮" 
                                                                       style:UIBarButtonItemStylePlain 
                                                                      target:self 
                                                                      action:@selector(buttonClick)];
    • 图片类按钮

          // 对图片进行处理,以原图的样式显示,否则显示为蓝色块
          UIImage *image1 = [[UIImage imageNamed:@"001"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];      
          UIBarButtonItem *imageBtn1 = [[UIBarButtonItem alloc] initWithImage:image1 
                                                                         style:UIBarButtonItemStylePlain 
                                                                        target:self 
                                                                        action:@selector(buttonClick)];
      
          UIImage *image2 = [[UIImage imageNamed:@"002"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
          UIImage *image3 = [[UIImage imageNamed:@"004"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
          UIBarButtonItem *imageBtn2 = [[UIBarButtonItem alloc] initWithImage:image2 
                                                         landscapeImagePhone:image3 
                                                                        style:UIBarButtonItemStyleDone 
                                                                       target:self 
                                                                       action:@selector(buttonClick)];
    • 自定义视图类按钮

          UIProgressView *progress = [[UIProgressView alloc] initWithProgressViewStyle:UIProgressViewStyleBar];
          progress.frame = CGRectMake(0, 0, 80, 20);
          progress.progress = 0.5;
          progress.progressTintColor = [UIColor greenColor];
          progress.trackTintColor = [UIColor redColor];
      
          UIBarButtonItem *viewBtn = [[UIBarButtonItem alloc] initWithCustomView:progress];
  • Swift

    • 系统类按钮

          /*
              UIBarButtonSystemItemDone,           Done
              UIBarButtonSystemItemCancel,         Cancel
              UIBarButtonSystemItemEdit,           Edit
              UIBarButtonSystemItemSave,           Save
              UIBarButtonSystemItemUndo,           Undo
              UIBarButtonSystemItemRedo,           Redo
              UIBarButtonSystemItemAdd,            加号 图标按钮
              UIBarButtonSystemItemFlexibleSpace,  弹簧 按钮,将 button 推向两边
              UIBarButtonSystemItemFixedSpace,     弹簧 按钮,将 button 推向两边,
                                                   可设间距 fixedSpaceButton.width = 50;
              UIBarButtonSystemItemCompose,        撰写 图标按钮
              UIBarButtonSystemItemReply,          答复 图标按钮
              UIBarButtonSystemItemAction,         详情 图标按钮
              UIBarButtonSystemItemOrganize,       文件夹 图标按钮
              UIBarButtonSystemItemBookmarks,      书籍 图标按钮
              UIBarButtonSystemItemSearch,         搜索 图标按钮
              UIBarButtonSystemItemRefresh,        刷新 图标按钮
              UIBarButtonSystemItemStop,           X 号 图标按钮
              UIBarButtonSystemItemCamera,         相机 图标按钮
              UIBarButtonSystemItemTrash,          删除 图标按钮
              UIBarButtonSystemItemPlay,           播放 图标按钮
              UIBarButtonSystemItemPause,          暂停 图标按钮
              UIBarButtonSystemItemRewind,         快退 图标按钮
              UIBarButtonSystemItemFastForward,    快进 图标按钮
          */
          let done:UIBarButtonItem = UIBarButtonItem(barButtonSystemItem: .Done, 
                                                                  target: self, 
                                                                  action: #selector(UiToolbar.buttonClick))

      iOS - UIToolbar
      iOS - UIToolbar

    • 文本类按钮

          /*
              case Plain        默认按钮风格;按下时会闪动
              case Bordered     与 UIBarButtonItemStylePlain 相同,但显示的按钮有边框, NS_ENUM_DEPRECATED_IOS
              case Done         显示一个蓝色按钮,提醒用户编辑完毕时应该点触(tap)该按钮。
          */
      
          let titleBtn:UIBarButtonItem = UIBarButtonItem(title: "按钮", 
                                                         style: UIBarButtonItemStyle.Plain, 
                                                        target: self, 
                                                        action: #selector(UiToolbar.buttonClick))
    • 图片类按钮

          // 对图片进行处理,以原图的样式显示,否则显示为蓝色块
          let image1:UIImage = UIImage(named: "001")!.imageWithRenderingMode(.AlwaysOriginal)         
          let imageBtn1:UIBarButtonItem = UIBarButtonItem(image: image1, 
                                                          style: UIBarButtonItemStyle.Plain, 
                                                         target: self, 
                                                         action: #selector(UiToolbar.buttonClick))
      
          let image2:UIImage = UIImage(named: "002")!.imageWithRenderingMode(.AlwaysOriginal)
          let image3:UIImage = UIImage(named: "004")!.imageWithRenderingMode(.AlwaysOriginal)
          let imageBtn2:UIBarButtonItem = UIBarButtonItem(image: image2, 
                                            landscapeImagePhone: image3, 
                                                          style: UIBarButtonItemStyle.Plain, 
                                                         target: self, 
                                                         action: #selector(UiToolbar.buttonClick))
    • 自定义视图类按钮

          let progress:UIProgressView = UIProgressView(progressViewStyle: UIProgressViewStyle.Bar)
          progress.frame = CGRectMake(0, 0, 80, 20)
          progress.progress = 0.5
          progress.progressTintColor = UIColor.greenColor()
          progress.trackTintColor = UIColor.redColor()
      
          let viewBtn:UIBarButtonItem = UIBarButtonItem(customView: progress)

3、navigation 中的 toolBar

  • navigationController 自带的 toolbar 属性是所有添加在 navigationController 上的视图所共用的,是属于 navigationController 的,不是属于每个 ViewController 的,但 toolbar 上显示的内容的是每个 ViewController 的,需要在每个 ViewController 上单独设置。

  • toolbar 的显示状态会被带到已经显示过的 ViewController 上,跳转到未显示过的 ViewController 时,toolbar 再次被隐藏。

  • Objective-C

        // 显示 toolBar,toolBar 默认是隐藏的,首先需要让它显示出来,默认在屏幕的最下方
        self.navigationController.toolbarHidden = NO;
    
        // 向 toolBar 添加按钮,最多只能显示 8 个,往 self.navigationController.toolbarItems 上添加时无用
        self.toolbarItems = buttonArray;    
  • Swift

        // 显示 toolBar,toolBar 默认是隐藏的,首先需要让它显示出来,默认在屏幕的最下方
        self.navigationController!.toolbarHidden = false
    
        // 向 toolBar 添加按钮,最多只能显示 8 个,往 self.navigationController.toolbarItems 上添加时无用
        self.toolbarItems = buttonArray
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