UIToolBar不会使用整个屏幕的宽度
UIToolBar不会使用整个屏幕的宽度
提问于 2020-07-19 04:49:44
我的UIToolBar不想使用整个屏幕的宽度。
我不使用任何TextField，但将工具栏添加为UIPickerView的子视图。
let toolBar = UIToolbar(frame: CGRect(x: 0, y: 0, width: UIScreen.main.bounds.width, height: 50))
@IBAction func addDistanceToCollection(_ sender: UIBarButtonItem) {
createPickerView()
createToolBar()
}
func createPickerView() {
pickerView.translatesAutoresizingMaskIntoConstraints = false
view.addSubview(pickerView)
pickerView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor).isActive = true
pickerView.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor).isActive = true
pickerView.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor).isActive = true
pickerView.addSubview(toolBar)
}
func createToolBar() {
let doneButton = UIBarButtonItem(barButtonSystemItem: .done, target: self, action: nil)
let cancelButton = UIBarButtonItem(barButtonSystemItem: .cancel, target: self, action: nil)
let flexibleSpace = UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: nil, action: nil)
toolBar.sizeToFit()
toolBar.setItems([cancelButton, flexibleSpace, doneButton], animated: false)
}我也试过使用pickerView.frame.width作为工具栏宽度，但似乎不能解决这个问题。看起来宽度是我不能改变的常量值。
回答 1
Stack Overflow用户
回答已采纳
发布于 2020-07-19 05:23:45
也将约束设置为工具栏
func createPickerView() {
pickerView.translatesAutoresizingMaskIntoConstraints = false
view.addSubview(pickerView)
view.addSubview(toolBar)
pickerView.leadingAnchor.constraint(equalTo: view.leadingAnchor).isActive = true
pickerView.trailingAnchor.constraint(equalTo: view.trailingAnchor).isActive = true
pickerView.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor).isActive = true
toolBar.translatesAutoresizingMaskIntoConstraints = false
toolBar.leadingAnchor.constraint(equalTo: view.leadingAnchor).isActive = true
toolBar.trailingAnchor.constraint(equalTo: view.trailingAnchor).isActive = true
toolBar.bottomAnchor.constraint(equalTo: pickerView.topAnchor).isActive = true
toolBar.heightAnchor.constraint(equalToConstant: 50).isActive = true
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/62973653
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