我们如何实现 UIKeyboardTypeNumberPad 以便它有一个“完成”按钮?默认情况下它没有。
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4 回答
13
如果我没有错,那么您想询问如何为 UIKeyboardTypeNumberPad 添加自定义“完成”按钮到键盘。在这种情况下,这可能会有所帮助。在.h 中声明一个 UIButton *doneButton 并将以下代码添加到 .m 文件中
- (void)addButtonToKeyboard {
// create custom button
if (doneButton == nil) {
doneButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 163, 106, 53)];
}
else {
[doneButton setHidden:NO];
}
[doneButton addTarget:self action:@selector(doneButtonClicked:) forControlEvents:UIControlEventTouchUpInside];
// locate keyboard view
UIWindow* tempWindow = [[[UIApplication sharedApplication] windows] objectAtIndex:1];
UIView* keyboard = nil;
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)doneButtonClicked:(id)Sender {
//Write your code whatever you want to do on done button tap
//Removing keyboard or something else
}
我在我的应用程序中使用了相同的按钮,因此调整了按钮的框架,因此您可以在需要在键盘上显示完成按钮时调用 [self addButtonToKeyboard ]。否则 UIKeyboardTypeNumberPad 没有完成按钮。
于 2011-01-28T08:45:38.460 回答
2
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardDidShowNotification object:nil];
//Call this method
- (void)keyboardWillShow:(NSNotification *)note {
UIButton *doneButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 163, 106, 53)];
doneButton.adjustsImageWhenHighlighted = NO;
[doneButton setImage:[UIImage imageNamed:@"Done.png"] forState:UIControlStateNormal];
[doneButton addTarget:self action:@selector(doneButton:) forControlEvents:UIControlEventTouchUpInside];
UIWindow* tempWindow = [[[UIApplication sharedApplication] windows] objectAtIndex:1];
UIView* keyboard;
for(int i=0; i<[tempWindow.subviews count]; i++) {
keyboard = [tempWindow.subviews objectAtIndex:i];
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];
}
}
}
于 2012-11-27T07:15:52.633 回答
1
iOS 5 问题已解决。太感谢了。
我在显示“完成”按钮时遇到问题。
替换:
if([[keyboard description] hasPrefix:@"<UIKeyboard"] == YES)
[keyboard addSubview:doneButton];
在 iOS 5 中没有显示完成按钮...
和:
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];
}
工作了一个款待。你是个明星。谢谢,尼古拉 ;-)
于 2011-12-05T17:14:06.667 回答
1
如果有人在尝试在同一个应用程序中加载其他类型的键盘时遇到 DONE 按钮不断弹出的问题,我知道很多应用程序都有这个问题。无论如何,这就是我解决这个问题的方法:在您的 ViewController(您添加 DONE 按钮的同一个视图控制器)中添加此代码(按原样),它应该可以解决您的问题,DONE 按钮不断重新出现。希望它对某些人有所帮助。
- (void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 3.2) {
[[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardDidShowNotification object:nil];
[[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardDidHideNotification object:nil];
} else {
[[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillShowNotification object:nil];
[[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillHideNotification object:nil];
}
}
于 2012-03-20T13:31:56.480 回答