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
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];
}
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
最简单的方法是:创建自定义透明按钮并将其放置在左下角,它将具有与UIKeyboardTypeNumberPad中的空白空间相同的CGSize。切换(显示/隐藏)这个按钮在textField成为firstresponder,按钮点击分别。
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()
}
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。
如果我们告诉视图控制器的视图结束编辑,我们也可以让“user touched somewhere else”解决方案更简单:
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
[super touchesBegan:touches withEvent:event];
[self.view endEditing:YES]; //YES ignores any textfield refusal to resign
}
... 假设“触摸其他地方会取消键盘”是视图中任何其他可编辑字段所期望的行为。