带有附件视图高度问题的 iPhone 键盘

Question

我有一个附加了输入附件视图的键盘，我使用了键盘将显示通知来获取键盘的高度。

问题是文本字段第一次成为第一响应者，键盘返回 216 的高度（没有附件视图的高度）。但是第二次关注文本字段，返回值是 216 + 附件视图的高度。

如何获取仅 216 或 216 + 辅助视图高度的键盘高度来设置 UI 框架基础？

Answer 1

我不确定你是如何编写代码的，但这是我的工作代码：

#pragma mark - Keyboard Notification
- (void)keyboardWillShow:(NSNotification *)notification {
    NSDictionary *info = [notification userInfo];
    NSValue *keyBoardEndFrame = [info objectForKey:UIKeyboardFrameEndUserInfoKey];
    CGSize keyboardSize = [keyBoardEndFrame CGRectValue].size;
    self.keyboardSize = keyboardSize;
}

- (void)keyboardWillHide:(NSNotification *)notification {
    self.keyboardSize = CGSizeZero;
}


- (void) addToolBarToTextView {

    UIToolbar *toolBar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, self.view.bounds.size.height, 320, 44)];
    toolBar.barStyle = UIBarStyleBlack;
    toolBar.translucent = YES;

    UIButton *doneBtn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    [doneBtn setFrame:CGRectMake(0, 7, 65, 30)];
    doneBtn.titleLabel.textAlignment = NSTextAlignmentCenter;
    [doneBtn setTitle:@"Next" forState:UIControlStateNormal];
    [doneBtn addTarget:self action:@selector(keyBoardDoneButtonPressed:) forControlEvents:UIControlEventTouchUpInside];
    UIBarButtonItem * barItem = [[UIBarButtonItem alloc] initWithCustomView:doneBtn];

    UIBarButtonItem *flexibleSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];

    toolBar.items = [NSArray arrayWithObjects: flexibleSpace, barItem, nil];

    mobileTxtField.inputAccessoryView     = toolBar;
}

-(void)viewDidLoad {
    [super viewDidLoad];
    [self addToolBarToTextView];

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];


}