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我正在尝试创建一个简单的笔记块应用程序。我正在使用 AQGridView 在网格中显示注释块。每个注释块在 AQGridViewCell 的自定义子类中都有一个可编辑的 UITextField 属性(类似于 TableViewCell)。而且我在键盘处理方面遇到了一些问题。我已尝试遵循本指南http://developer.apple.com/library/ios/#documentation/StringsTextFonts/Conceptual/TextAndWebiPhoneOS/KeyboardManagement/KeyboardManagement.html。我已经实现了这样的方法keyboardWillShow和keyboardWillBeHidden:

- (void)keyboardWillShow:(NSNotification *)notification 
{

    // Animates the done button.
    [UIView beginAnimations:nil context:NULL];

    // Display a done button 
    UIBarButtonItem * doneButton = [[UIBarButtonItem alloc]initWithTitle:@"Done"    style:UIBarButtonItemStyleDone target:self action:@selector(hideKeyboard)];
    [[self navigationItem] setRightBarButtonItem:doneButton];

    NSDictionary* info = [notification userInfo];
    CGSize kbSize = [[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;

    UIEdgeInsets contentInsets = UIEdgeInsetsMake(0.0, 0.0, kbSize.height, 0.0);
    self.gridView.contentInset = contentInsets;
    self.gridView.scrollIndicatorInsets = contentInsets;

    // If active text field is hidden by keyboard, scroll it so it's visible
    // Your application might not need or want this behavior.
    CGRect aRect = self.view.frame;
    aRect.size.height -= kbSize.height;
    NSLog(@"%f", activeField.frame.origin.y);
    if (!CGRectContainsPoint(aRect, activeField.frame.origin) ) {
        CGPoint scrollPoint = CGPointMake(0.0, activeField.frame.origin.y+kbSize.height);
        [self.gridView setContentOffset:scrollPoint animated:YES];
    }

}

// Called when the UIKeyboardWillHideNotification is sent
- (void)keyboardWillBeHidden:(NSNotification *)notification 
{
    // Remove the "done" button
    self.navigationItem.rightBarButtonItem = self.editButtonItem;

    UIEdgeInsets contentInsets = UIEdgeInsetsZero;
    self.gridView.contentInset = contentInsets;
    self.gridView.scrollIndicatorInsets = contentInsets;

}

我在 cellForItemAtIndex 中设置了 textField 的委托(类似于 cellForRowAtIndexPath)。

目前,滚动到正确的位置不能正常工作。我认为问题与文本字段有关,因为当我测试时:

// activeField is a UITextField property that I set in textFieldDidBeginEditing, 
// and later set to nil in textFieldDidEndEditing.
NSLog(@"%f", activeField.frame.origin.y);

它总是返回相同的值,在我的情况下为 95,即使所选的 textField 不在同一行上。

有关如何解决此问题或其他解决方案的提示会很棒!

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1 回答 1

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我想我通过为单元格的 textField 设置一个标签,然后从该标签/索引中获取单元格来解决它。然后根据单元格的位置而不是单元格内的 textField 计算键盘出现时的位置。

于 2011-07-30T10:42:47.320 回答