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我在键盘顶部添加了一个带有按钮的视图，使用setInputAccessoryView. 现在我想要一些功能，比如当我从视图中单击按钮时，我想在键盘顶部显示一个pickerView 。像添加pickerView的意思添加为键盘的子视图。

我怎样才能做到这一点？

4

5 回答 5

19

在键盘顶部制作您想要的视图。您可以从 xib 或手动执行此操作，但我认为 xib 将是一个更好的选择。

然后通过这样做来引用这个视图

 - (BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
   textField.inputAccessoryView = YOURCustomView;
   return YES;
}

每当您想隐藏或删除此内容时，只需放置此内容

textField.inputAccessoryView = nil;
于 2012-10-04T07:23:28.297 回答
2 
self.pickerContainerView = [[UIView alloc] initWithFrame:CGRectMake(0, 194, 320, 224)];
    self.pickerContainerView.backgroundColor = [UIColor clearColor];
    [self.view addSubview:self.pickerContainerView];

    UIToolbar *pickerToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
    pickerToolbar.barStyle = UIBarStyleBlackTranslucent;
    [pickerToolbar sizeToFit];

    self.lblPickerViewTitle = [[UILabel alloc] initWithFrame:CGRectMake(15, 7, 230, 30)];
        self.lblPickerViewTitle.backgroundColor = [UIColor clearColor];
    [self.lblPickerViewTitle  setFont: [UIFont fontWithName:@"Arial-BoldMT" size:17]];
        self.lblPickerViewTitle.textAlignment = UITextAlignmentLeft;
        self.lblPickerViewTitle.textColor =[UIColor whiteColor];
    [pickerToolbar addSubview:self.lblPickerViewTitle];

    NSMutableArray *barItems = [[NSMutableArray alloc] init];
    UIBarButtonItem *flexSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];
    [barItems addObject:flexSpace];
    [flexSpace release];

    UIBarButtonItem *btnCancel = [[UIBarButtonItem alloc] initWithTitle:@"Cancel" style:UIBarButtonItemStyleBordered target:self action:@selector(closePickerView:)];
    [barItems addObject:btnCancel];
    [btnCancel release];

    UIBarButtonItem *btnDone = [[UIBarButtonItem alloc] initWithTitle:@"ShowPicker" style:UIBarButtonItemStyleBordered target:self action:@selector(donePickerView:)];
    [barItems addObject:btnDone];
    [btnDone release];

    [pickerToolbar setItems:barItems animated:YES];
    [barItems release];
    [self.pickerContainerView addSubview:pickerToolbar];

并在ShowPicker Method 中，编写显示 UIPicker 的代码

于 2012-10-04T06:53:45.183 回答
1

就像键盘上的添加按钮一样，您还可以添加如下视图...

在这里你找到键盘窗口，然后设置按钮框架和你的视图，然后添加到键盘

- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField{
    [[NSNotificationCenter defaultCenter] addObserver:self 
                                             selector:@selector(keyboardDidShow:) 
                                                 name:UIKeyboardDidShowNotification 
                                               object:nil];
    return YES;
}
- (void)keyboardDidShow:(NSNotification *)note {
    UIButton *returnBtn = [UIButton buttonWithType:UIButtonTypeCustom];
    returnBtn.frame = CGRectMake(0,-25,320,25);
    returnBtn.adjustsImageWhenHighlighted = NO;
    returnBtn.backgroundColor=[UIColor darkGrayColor];
    returnBtn.titleLabel.textColor=[UIColor whiteColor];
    [returnBtn setBackgroundImage:[UIImage imageNamed:@"keyBtn.png"] forState:UIControlStateNormal];

    [returnBtn addTarget:self action:@selector(keyboardBtn:) 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([[keyboard description] hasPrefix:@"<UIPeripheralHost"] == YES)
            //  if (txtTag==5) {
            [keyboard addSubview:returnBtn];
    }
}
-(IBAction)keyboardBtn:(id)sender{
    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)
            //  if (txtTag==5) {
            [keyboard addSubview:yourView];// here add your view with frame
    }
}

我希望这可以帮助你...

:)

于 2012-10-04T06:48:56.080 回答
1

您需要先创建另一个 UIWindow：

UIWindow *newWindow = [[UIWindow alloc] initWithFrame:CGRectMake(0,100,320,20)];
newWindow.windowLevel = UIWindowLevelStatusBar; // this will make to place your WINDOW above the keyboard
[newWindow makeKeyAndVisible]; // show the new window

// [newWindow addSubview:yourView];
于 2012-10-04T06:45:12.247 回答
0

来自乔纳斯施内利的回答

UIWindow *newWindow = [[UIWindow alloc]initWithFrame:CGRectMake(0,100,320,20)];
newWindow.windowLevel = CGFLOAT_MAX; // this will make to place your WINDOW above the keyboard

[newWindow addSubview:yourView];

改成就好UIWindowLevelStatusBar了CGFLOAT_MAX。

于 2016-04-12T08:12:57.487 回答