Question

在iOS 3中，此解决方法涉及创建客户UIButton并将其作为子视图添加到Apple键盘。当iOS 4发布时，子视图被添加到更改的视图。所以要在iOS3＆amp; 4我有以下内容。

-(void) addDoneButtonToNumericKeyboard {
if(doneButtonIsAdded) {
    return;
}
if(doneButtonForNumericKeyboard == nil) {
    doneButtonForNumericKeyboard= [[UIButton buttonWithType:UIButtonTypeCustom] retain];
    doneButtonForNumericKeyboard.frame = CGRectMake(0, 163, 106, 53);
    doneButtonForNumericKeyboard.adjustsImageWhenHighlighted = NO;
    if ([[[UIDevice currentDevice] systemVersion] hasPrefix:@"3"]) {
        [doneButtonForNumericKeyboard setImage:[UIImage imageNamed:@"DoneUp3.png"] forState:UIControlStateNormal];
        [doneButtonForNumericKeyboard setImage:[UIImage imageNamed:@"DoneDown3.png"] forState:UIControlStateHighlighted];
    } else {        
        [doneButtonForNumericKeyboard setImage:[UIImage imageNamed:@"DoneUp.png"] forState:UIControlStateNormal];
        [doneButtonForNumericKeyboard setImage:[UIImage imageNamed:@"DoneDown.png"] forState:UIControlStateHighlighted];
    }
    [doneButtonForNumericKeyboard addTarget:self action:@selector(doneButton:) forControlEvents:UIControlEventTouchUpInside];
}
// locate keyboard view
NSArray *winArray = [[UIApplication sharedApplication] windows];
if(winArray == nil || [winArray count] < 2) {
    NSLog(@"No winArray found!");
    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 view found; add the custom button to it
    NSLog(@"Keyboard description : %@", [keyboard description]);
    if([[keyboard description] hasPrefix:@"<UIKeyboard"] == YES || [[keyboard description] hasPrefix:@"<UIPeripheralHost"] == YES) {
        NSLog(@"Attaching done button");
        [keyboard addSubview:doneButtonForNumericKeyboard];
        doneButtonIsAdded = YES;
    }
}
}

任何人都有任何想法如何让这个适用于iOS 5？

上述两种方法都不适用于5.尝试添加似乎成功但未显示任何内容的子视图。该区域在屏幕上只是空白，并且不会响应。

Answer 1

我也注意到了这一点，到目前为止我唯一能够解决的问题是将其从keyboardWillShow:更改为keyboardDidShow:。 “遗嘱”和“遗嘱”之间的区别显然是另一种讨论，但似乎根据我的需要修复了它。

我希望这会有所帮助。

我发现的更多背景是[[UIApplication sharedApplication] windows]第一个对象确实存在，但第二个对象（索引1）消失了。我想知道是什么造成的。

感谢。

Answer 2

我很幸运能找到这个：

替换： if（[[keyboard description] hasPrefix：@“

使用： if（[[[[UIDevice currentDevice] systemVersion] floatValue]＆gt; = 3.2）{ if（[[keyboard description] hasPrefix：@“

参考此链接：UIKeyboardTypeNumberPad without a done button

iOS 5中的UIKeyboardTypeNumberPad返回或完成按钮

2 个答案: