【发布时间】:2014-12-28 04:17:33
【问题描述】:
我能够在键盘的 inputAccessoryView 属性中获得一个按钮(带图像)来工作(cameraButton)。但是,当尝试将 UILabel (cameraLabel) 放在 cameraButton 的右侧时,Xcode 会抛出错误 - “[UILabel view]: unrecognized selector sent to instance 0x7fd66ca31a30”
这是我第一次尝试 inputAccessoryView 并以编程方式创建 UILabel。这是我的代码,我已经在这里和谷歌搜索了几个小时,但找不到我想要实现的相同场景。非常感谢任何帮助!:
第一部分:
class SecondViewController: UIViewController, UITextViewDelegate, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
var cameraLabel: UILabel!
在 viewDidLoad 方法下(这些都是我从各种在线资源中拼凑出来的):
let keyboardButtonView = UIToolbar()
keyboardButtonView.sizeToFit()
let imageCamera = UIImage(named: "camera")?.imageWithRenderingMode(.AlwaysOriginal)
let cameraButton = UIBarButtonItem(image: imageCamera, style: .Plain, target: self, action: "keyboardCamera")
//not sure how x & y for CGRect work, especially within the inputAccessoryView. Just guessed on the width and height for now, until I can get it to work.
cameraLabel = UILabel(frame: CGRect(x: 0, y: 0, width: 50, height: 40))
cameraLabel.numberOfLines = 1
cameraLabel.adjustsFontSizeToFitWidth = true
cameraLabel.text = "Optionally Add Photo"
cameraLabel.font = UIFont.boldSystemFontOfSize(10)
var toolbarButtons = NSMutableArray()
toolbarButtons.addObject(cameraButton)
toolbarButtons.addObject(cameraLabel)
keyboardButtonView.items = toolbarButtons
//Alternatively, another person did this....
keyboardButtonView.setItems(toolbarButtons, animated: false)
textView.inputAccessoryView = keyboardButtonView
【问题讨论】:
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您尝试将标签添加到功能不同的工具栏,因为工具栏通常由按钮组成。看看这个问题并将其翻译成 swift stackoverflow.com/questions/9529106/…
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谢谢。我不是最擅长解释 obj-c,但看起来我可能必须在 UIBarButtonItem 中放置一个 customview UILabel。第二个答案使用了一种叫做释放的东西。但我不确定。
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不用担心现在使用 ARC 会自动完成发布。我只是将您发送给他们的对话,因为它类似于您的最终目标
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谢谢!它为我指明了正确的方向!
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@soulshined 成功了。再次感谢!
标签: ios swift keyboard uilabel inputaccessoryview