在. numberpad键盘类型上没有“完成”按钮。当用户在文本字段中输入数字信息时,如何使数字pad消失?
我可以使用默认键盘来获得“完成”按钮,但用户必须切换到数字键才能输入数字。有没有办法在数字板上显示“完成”按钮?
在. numberpad键盘类型上没有“完成”按钮。当用户在文本字段中输入数字信息时,如何使数字pad消失?
我可以使用默认键盘来获得“完成”按钮,但用户必须切换到数字键才能输入数字。有没有办法在数字板上显示“完成”按钮?
当前回答
let pickerView = UIPickerView()
var yearpickerToolbar: UIToolbar?
func createPickerView() {
pickerView.delegate = self
textfield.inputView = pickerView }
func dismissPickerView() {
let toolBar = UIToolbar()
toolBar.sizeToFit()
toolBar.isUserInteractionEnabled = true
textfield.inputAccessoryView = toolBar
textfield.delegate = self
yearpickerToolbar = UIToolbar()
yearpickerToolbar?.autoresizingMask = .flexibleHeight
//add buttons
let cancelButton = UIBarButtonItem(barButtonSystemItem: .cancel, target: self, action:#selector(cancelBtnClicked(_:)))
cancelButton.tintColor = UIColor.blue
let flexSpace = UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: nil, action: nil)
let doneButton = UIBarButtonItem(title: "Done", style: .plain , target: self, action: #selector(self.doneBtnClicked(_ :) ))
doneButton.tintColor = UIColor.blue
doneButton.setTitleTextAttributes([NSAttributedString.Key.foregroundColor:
UIColor.black], for: .normal)
cancelButton.setTitleTextAttributes([NSAttributedString.Key.foregroundColor:
UIColor.black], for: .normal)
yearpickerToolbar?.items = [cancelButton, flexSpace, doneButton]
textfield.inputAccessoryView = yearpickerToolbar }
@objc func cancelBtnClicked(_ button: UIBarButtonItem?) {
self.view.endEditing(true)
}
@objc func doneBtnClicked(_ button: UIBarButtonItem?) {
self.view.endEditing(true)
}
其他回答
let pickerView = UIPickerView()
var yearpickerToolbar: UIToolbar?
func createPickerView() {
pickerView.delegate = self
textfield.inputView = pickerView }
func dismissPickerView() {
let toolBar = UIToolbar()
toolBar.sizeToFit()
toolBar.isUserInteractionEnabled = true
textfield.inputAccessoryView = toolBar
textfield.delegate = self
yearpickerToolbar = UIToolbar()
yearpickerToolbar?.autoresizingMask = .flexibleHeight
//add buttons
let cancelButton = UIBarButtonItem(barButtonSystemItem: .cancel, target: self, action:#selector(cancelBtnClicked(_:)))
cancelButton.tintColor = UIColor.blue
let flexSpace = UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: nil, action: nil)
let doneButton = UIBarButtonItem(title: "Done", style: .plain , target: self, action: #selector(self.doneBtnClicked(_ :) ))
doneButton.tintColor = UIColor.blue
doneButton.setTitleTextAttributes([NSAttributedString.Key.foregroundColor:
UIColor.black], for: .normal)
cancelButton.setTitleTextAttributes([NSAttributedString.Key.foregroundColor:
UIColor.black], for: .normal)
yearpickerToolbar?.items = [cancelButton, flexSpace, doneButton]
textfield.inputAccessoryView = yearpickerToolbar }
@objc func cancelBtnClicked(_ button: UIBarButtonItem?) {
self.view.endEditing(true)
}
@objc func doneBtnClicked(_ button: UIBarButtonItem?) {
self.view.endEditing(true)
}
我所见过的技巧是创建一个与整个视图大小相同的自定义透明按钮,然后在其click方法中,让文本字段辞去first responder。因此,用户可以单击字段之外的任何地方来取消键盘。
以下是改编自Luda对斯威夫特的回答:
在你的UIViewController子类put的声明中
let numberToolbar: UIToolbar = UIToolbar()
在ViewDidLoad中放入:
numberToolbar.barStyle = UIBarStyle.BlackTranslucent
numberToolbar.items=[
UIBarButtonItem(title: "Cancel", style: UIBarButtonItemStyle.Bordered, target: self, action: "hoopla"),
UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.FlexibleSpace, target: self, action: nil),
UIBarButtonItem(title: "Apply", style: UIBarButtonItemStyle.Bordered, target: self, action: "boopla")
]
numberToolbar.sizeToFit()
textField.inputAccessoryView = numberToolbar //do it for every relevant textfield if there are more than one
并添加函数hoopla和hoopla(可以随意选择其他名称,只需相应地更改ViewDidLoad中的选择器名称
func boopla () {
textField.resignFirstResponder()
}
func hoopla () {
textField.text=""
textField.resignFirstResponder()
}
所有这些关于找到键盘视图并在第三行添加done按钮的实现(这就是为什么按钮。y = 163 b/c键盘的高度是216)是脆弱的,因为iOS不断改变视图层次结构。例如,上述代码都不适用于iOS9。
我认为更安全的方法是找到最顶层的视图,通过[[UIApplication sharedApplication] windows] lastObject],并在它的左下角添加按钮,doneButton.frame = CGRectMake(0, screen_height - 53,106,53);//人像模式
以下是对Luda的回答的全面检查,并进行了以下更改:
附件视图会自动调整到应用程序框架的宽度 避免使用已弃用的常量UIBarButtonItemStyleBordered Done按钮被实例化为UIBarButtonSystemItemDone
目前“Done”按钮位于附件视图的中央。您可以通过删除相关一侧的空格将其定位在左侧或右侧。
我省略了“取消”按钮,因为默认键盘也没有这个按钮。如果你确实想要一个“取消”按钮,我建议你实例化它为一个UIBarButtonSystemItemCancel,并确保你没有丢弃文本字段中的原始值。在Luda的回答中实现的“取消”行为会用空字符串覆盖值,这可能不是你想要的。
- (void)viewDidLoad {
[super viewDidLoad];
float appWidth = CGRectGetWidth([UIScreen mainScreen].applicationFrame);
UIToolbar *accessoryView = [[UIToolbar alloc]
initWithFrame:CGRectMake(0, 0, appWidth, 0.1 * appWidth)];
UIBarButtonItem *space = [[UIBarButtonItem alloc]
initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace
target:nil
action:nil];
UIBarButtonItem *done = [[UIBarButtonItem alloc]
initWithBarButtonSystemItem:UIBarButtonSystemItemDone
target:self
action:@selector(selectDoneButton)];
accessoryView.items = @[space, done, space];
self.valueField.inputAccessoryView = accessoryView;
}
- (void)selectDoneButton {
[self.valueField resignFirstResponder];
}
有关构建附件视图的更多信息,请参阅Apple关于数据输入自定义视图的文档。你可能会想要参考UIToolbar和UIBarButtonItem的参考页面。