如何在 ios 8 中获取键盘位置并在 numberPad 上添加 DONE 按钮
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【中文标题】如何在 ios 8 中获取键盘位置并在 numberPad 上添加 DONE 按钮【英文标题】:how to get keyboard location in ios 8 & add DONE button on numberPad 【发布时间】:2014-09-25 06:11:42 【问题描述】:我正在使用下面的代码从视图中获取键盘位置并在其上添加 DONE 按钮。但在 ios 8 中它无法获取键盘位置,因此无法添加 DONE 按钮。
UIWindow *tempWindow = [[[UIApplication sharedApplication] windows] objectAtIndex:1];
UIView *keyboard;
for (int i = 0; i < [tempWindow.subviews count]; i++)
keyboard = [tempWindow.subviews objectAtIndex:i];
// keyboard view found; add the custom button to it
if ([[keyboard description] hasPrefix:@"<UIPeripheralHostView"] == YES)
[keyboard addSubview:doneButton];
【问题讨论】:
【参考方案1】:以下代码也用于在 NumberPad iOS 8 上显示 "DONE" 按钮。 我使用 iOS 6/7/8 设备 在 XCode-5.1.1 中运行此代码。它工作完美。
我从这个链接Can't find keyplane that supports type 4 for keyboard iPhone-Portrait-NumberPad 获得了参考,给出了数字键盘上添加按钮的一些代码。
@property (nonatomic, retain) UIButton *doneButton;
添加按钮
- (void)addButtonToKeyboard
if (!self.doneButton)
self.doneButton = [UIButton buttonWithType:UIButtonTypeCustom];
[self.doneButton addTarget:self action:@selector(doneButtonClicked:) forControlEvents:UIControlEventTouchUpInside];
self.doneButton.adjustsImageWhenHighlighted = NO;
[self.doneButton setTitle:@"DONE" forState:UIControlStateNormal];
[self.doneButton.titleLabel setFont:[UIFont systemFontOfSize:16.0]];
[self.doneButton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[self.doneButton setTitleColor:[UIColor blackColor] forState:UIControlStateHighlighted];
// locate keyboard view
if ([[[UIApplication sharedApplication] windows] count] <= 1) return;
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 ([[keyboard description] hasPrefix:@"<UIPeripheralHost"] == YES)
BOOL isPortrait = UIInterfaceOrientationIsPortrait([UIApplication sharedApplication].statusBarOrientation);
self.doneButton.frame = CGRectMake(((isPortrait)?0:-1),((int) (keyboard.frame.size.height*3)/4) + ((isPortrait)?0:1),(int) keyboard.frame.size.width/3-1, (isPortrait)?60:40);
[keyboard addSubview:self.doneButton];
//This code will work on iOS 8.0
else if([[keyboard description] hasPrefix:@"<UIInputSetContainerView"] == YES)
for(int i = 0 ; i < [keyboard.subviews count] ; i++)
UIView* hostkeyboard = [keyboard.subviews objectAtIndex:i];
if([[hostkeyboard description] hasPrefix:@"<UIInputSetHost"] == YES)
BOOL isPortrait = UIInterfaceOrientationIsPortrait([UIApplication sharedApplication].statusBarOrientation);
self.doneButton.frame = CGRectMake(((isPortrait) ? 0 : -1),((int) (hostkeyboard.frame.size.height*3)/4) + ((isPortrait) ? 0 : 1),(int) hostkeyboard.frame.size.width/3-1, (isPortrait) ? 60 : 40);
[hostkeyboard addSubview:self.doneButton];
else
removeButtonFromKeyboard
- (void)removeButtonFromKeyboard
NSArray *arTemp = [[UIApplication sharedApplication] windows];
if ([arTemp count] <= 1) return;
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 ([[keyboard description] hasPrefix:@"<UIPeripheralHost"] == YES)
for (id temp in keyboard.subviews)
if ([temp isKindOfClass:[UIButton class]])
UIButton *btnDone = (UIButton*) temp;
[btnDone removeFromSuperview];
break;
//This code will work on iOS 8.0
else if([[keyboard description] hasPrefix:@"<UIInputSetContainerView"] == YES)
for(int i = 0 ; i < [keyboard.subviews count] ; i++)
UIView* hostkeyboard = [keyboard.subviews objectAtIndex:i];
if([[hostkeyboard description] hasPrefix:@"<UIInputSetHost"] == YES)
for (id temp in hostkeyboard.subviews)
if ([temp isKindOfClass:[UIButton class]])
UIButton *btnDone = (UIButton*) temp;
[btnDone removeFromSuperview];
break;
else
如有任何问题,请告诉我。
更新: 在 iOS 7.1 上进行测试,真实设备 - 除非键盘显示动画完成,否则不会添加按钮。一旦键盘完全可见,下面的代码会延迟添加按钮:
-(void)textFieldDidBeginEditing:(UITextField *)textField
[self performSelector:@selector(addButtonToKeyboard) withObject:nil afterDelay:0.75];
【讨论】:
Gr8 成功了,但是当我将文本字段从小键盘更改为普通键盘时,完成按钮出现在键盘前面..我该怎么办? 您必须在“textFieldShouldEndEditing”委托方法中调用 removeButtonFromKeyboard。就是这样。 老兄当我直接点击文本字段完成按钮被隐藏,如果我再次从向下到向上点击它就会消失。怎么办? @iAnurag - 请点击此链接***.com/questions/25842168/…它将满足您的所有需求。 我想从键盘上删除完成按钮和预测文本栏。我只想显示键盘请帮忙。【参考方案2】:我喜欢“Alex-stone”,但无法点击自定义按钮。
我的解决方案:
//创建DoneCustomReturnKeyButton添加到键盘
- (void)addDoneCustomReturnKeyButtonInKeyboard:(NSNotification *)notification
NSArray *arr = [[[[UIApplication sharedApplication] windows] lastObject] subviews];
if (arr.count > 0)
UIView *keyboardView = [arr objectAtIndex:0];
float height;
if ([[keyboardView description] hasPrefix:@"<UIPeripheralHost"] == YES)
height = (CGRectGetHeight(keyboardView.frame) -
CGRectGetHeight(self.navigationController.navigationBar.frame)) / 4;
[self.doneCustomReturnKeyButton setFrame:CGRectMake(0, keyboardView.frame.size.height - height,
keyboardView.frame.size.width/3 - 2, height)];
[keyboardView addSubview:self.doneCustomReturnKeyButton];
//This code will work on iOS 8.0
else if([[keyboardView description] hasPrefix:@"<UIInputSetContainerView"] == YES)
for(int i = 0 ; i < [keyboardView.subviews count] ; i++)
UIView* hostkeyboard = [keyboardView.subviews objectAtIndex:i];
if([[hostkeyboard description] hasPrefix:@"<UIInputSetHost"] == YES)
UIButton* donebtn = (UIButton*)[hostkeyboard viewWithTag:67123];
if (donebtn == nil)
height = (CGRectGetHeight(hostkeyboard.frame) -
CGRectGetHeight(self.navigationController.navigationBar.frame)) / 4;
[self.doneCustomReturnKeyButton setFrame:CGRectMake(0, keyboardView.frame.size.height - height,
keyboardView.frame.size.width/3 - 2, height)];
[keyboardView addSubview:self.doneCustomReturnKeyButton];
else
self.doneCustomReturnKeyButton.hidden = YES;
并创建按钮。
- (void)createDoneCustomReturnKeyButton
self.doneCustomReturnKeyButton = [UIButton buttonWithType:UIButtonTypeSystem];
[self.doneCustomReturnKeyButton setTitle:NSLocalizedString(@"NEXT", nil) forState:UIControlStateNormal];
[self.doneCustomReturnKeyButton.titleLabel setFont:[UIFont systemFontOfSize:20]];
self.doneCustomReturnKeyButton.adjustsImageWhenHighlighted = NO;
self.doneCustomReturnKeyButton.backgroundColor = [UIColor lightGrayColor];
[self.doneCustomReturnKeyButton setTintColor:[UIColor whiteColor]];
[self.doneCustomReturnKeyButton addTarget:self
action:@selector(doneCustomReturnKeyButtonAction:)
forControlEvents:UIControlEventTouchUpInside];
【讨论】:
【参考方案3】:好的,当我遇到类似错误时,这是一个简单的修复方法,用于在 iOS 9、iOS 8 及更低版本的应用程序中显示和运行“完成”按钮。在运行应用程序并通过“视图的层次结构”查看它后可以观察到它(即,当应用程序在设备上运行时单击调试区域栏中的“查看层次结构”图标并在 Storyboard 中检查您的视图) ,与 iOS 8 及以下版本相比,键盘在 iOS 9 中显示在不同的窗口上,必须加以考虑。 addButtonToKeyboard
- (id)addButtonToKeyboard
if (!doneButton)
// create custom button
UIButton * doneButton = [UIButton buttonWithType:UIButtonTypeCustom];
doneButton.frame = CGRectMake(-2, 163, 106, 53);
doneButton.adjustsImageWhenHighlighted = NO;
[doneButton setImage:[UIImage imageNamed:@"DoneUp.png"] forState:UIControlStateNormal];
[doneButton setImage:[UIImage imageNamed:@"DoneDown.png"] forState:UIControlStateHighlighted];
[doneButton addTarget:self action:@selector(saveNewLead:) forControlEvents:UIControlEventTouchUpInside];
NSArray *windows = [[UIApplication sharedApplication] windows];
//Check to see if running below iOS 9,then return the second window which bears the keyboard
if ([[[UIDevice currentDevice] systemVersion] floatValue] < 9.0)
return windows[windows.count - 2];
else
UIWindow* keyboardWithDoneButtonWindow = [ windows lastObject];
return keyboardWithDoneButtonWindow;
如果你愿意,这就是你可以从键盘removeKeyboardButton的方法。
- (void)removeKeyboardButton
id windowTemp = [self addButtonToKeyboard];
if (windowTemp)
for (UIView *doneButton in [windowTemp subviews])
if ([doneButton isKindOfClass:[UIButton class]])
[doneButton setHidden:TRUE];
如果您使用 UITextfieldsDelegates 方法,您只需在 textFieldDidBeginEditing 委托方法中调用 addButtonToKeyboard 方法即可。现在,如果您在 NumberPad 和默认键盘之间来回切换,建议您在“textFieldShouldEndEditing”委托方法中调用 removeKeyboardButton 以防止发生任何意外。
【讨论】:
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