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
使用扩展的Swift 3解决方案。如果你在你的应用程序中有几个数值的UITextField对象,这是理想的,因为它可以灵活地决定,对于每个UITextField,当点击完成或取消时是否执行自定义操作。
//
// UITextField+DoneCancelToolbar.swift
//
import UIKit
extension UITextField {
func addDoneCancelToolbar(onDone: (target: Any, action: Selector)? = nil, onCancel: (target: Any, action: Selector)? = nil) {
let onCancel = onCancel ?? (target: self, action: #selector(cancelButtonTapped))
let onDone = onDone ?? (target: self, action: #selector(doneButtonTapped))
let toolbar: UIToolbar = UIToolbar()
toolbar.barStyle = .default
toolbar.items = [
UIBarButtonItem(title: "Cancel", style: .plain, target: onCancel.target, action: onCancel.action),
UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: self, action: nil),
UIBarButtonItem(title: "Done", style: .done, target: onDone.target, action: onDone.action)
]
toolbar.sizeToFit()
self.inputAccessoryView = toolbar
}
// Default actions:
func doneButtonTapped() { self.resignFirstResponder() }
func cancelButtonTapped() { self.resignFirstResponder() }
}
使用默认动作的示例:
//
// MyViewController.swift
//
@IBOutlet weak var myNumericTextField: UITextField! {
didSet { myNumericTextField?.addDoneCancelToolbar() }
}
使用自定义完成动作的示例:
//
// MyViewController.swift
//
@IBOutlet weak var myNumericTextField: UITextField! {
didSet {
myNumericTextField?.addDoneCancelToolbar(onDone: (target: self, action: #selector(doneButtonTappedForMyNumericTextField)))
}
}
func doneButtonTappedForMyNumericTextField() {
print("Done");
myNumericTextField.resignFirstResponder()
}
其他回答
这是最新的代码。只包括 在你的viewController中导入"UIViewController+NumPadReturn.h"
这里是。h
#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>
@interface UIViewController (NumPadReturn)
@end
还有。m
#import "UIViewController+NumPadReturn.h"
@implementation UIViewController (NumPadReturn)
-(void) viewDidLoad{
// add observer for the respective notifications (depending on the os version)
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 3.2) {
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(keyboardDidShow:)
name:UIKeyboardDidShowNotification
object:nil];
} else {
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(keyboardWillShow:)
name:UIKeyboardWillShowNotification
object:nil];
}
}
- (void)keyboardWillShow:(NSNotification *)note {
// if clause is just an additional precaution, you could also dismiss it
if ([[[UIDevice currentDevice] systemVersion] floatValue] < 3.2) {
[self addButtonToKeyboard];
}
}
- (void)keyboardDidShow:(NSNotification *)note {
// if clause is just an additional precaution, you could also dismiss it
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 3.2) {
[self addButtonToKeyboard];
}
}
- (void)addButtonToKeyboard {
// create custom button
UIButton *doneButton = [UIButton buttonWithType:UIButtonTypeCustom];
doneButton.frame = CGRectMake(0, 163, 106, 53);
doneButton.adjustsImageWhenHighlighted = NO;
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 3.0) {
[doneButton setImage:[UIImage imageNamed:@"DoneUp3.png"] forState:UIControlStateNormal];
[doneButton setImage:[UIImage imageNamed:@"DoneDown3.png"] forState:UIControlStateHighlighted];
} else {
[doneButton setImage:[UIImage imageNamed:@"DoneUp.png"] forState:UIControlStateNormal];
[doneButton setImage:[UIImage imageNamed:@"DoneDown.png"] forState:UIControlStateHighlighted];
}
[doneButton addTarget:self action:@selector(doneButton:) forControlEvents:UIControlEventTouchUpInside];
// locate keyboard view
UIWindow* tempWindow = [[[UIApplication sharedApplication] windows] objectAtIndex:1];
UIView* keyboard;
for(int i=0; i<[tempWindow.subviews count]; i++) {
keyboard = [tempWindow.subviews objectAtIndex:i];
// keyboard found, add the button
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 3.2) {
if([[keyboard description] hasPrefix:@"<UIPeripheralHost"] == YES)
[keyboard addSubview:doneButton];
} else {
if([[keyboard description] hasPrefix:@"<UIKeyboard"] == YES)
[keyboard addSubview:doneButton];
}
}
}
- (void)doneButton:(id)sender {
NSLog(@"doneButton");
[self.view endEditing:TRUE];
}
@end
我在这里描述了iOS 4.2+的一个解决方案,但键盘出现后,解散按钮会消失。这并不可怕,但也不理想。
上面链接的问题中描述的解决方案包括一种更优雅的消除按钮的错觉,我将按钮淡出并垂直移动,以提供键盘和按钮一起消除的外观。
我发现@user1258240的答案是非常简洁的,因为这并不像设置一个returnKeyType属性那么简单。
只是想贡献我自己的“可重用”方法:
func SetDoneToolbar(field:UITextField) {
let doneToolbar:UIToolbar = UIToolbar()
doneToolbar.items=[
UIBarButtonItem(barButtonSystemItem: UIBarButtonItem.SystemItem.flexibleSpace, target: self, action: nil),
UIBarButtonItem(title: "Done", style: UIBarButtonItem.Style.plain, target: self, action: #selector(ViewController.dismissKeyboard))
]
doneToolbar.sizeToFit()
field.inputAccessoryView = doneToolbar
}
override func viewDidLoad() {
super.viewDidLoad()
SetDoneToolbar(field: UITextField_1)
SetDoneToolbar(field: UITextField_2)
SetDoneToolbar(field: UITextField_3)
SetDoneToolbar(field: UITextField_N)
}
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)
}
一个更简单的解决方案
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
[super touchesBegan:touches withEvent:event];
[textViewInstance1 resignFirstResponder];
[textViewInstance2 resignFirstResponder];
[textField resignFirstResponder];
}