Question

在我的应用中，当我点击文本字段时，键盘会隐藏它。请帮助我 - 当我点击文本字段时，如何移动我的视图。我在textFieldDidBeginEditing:

中使用此代码

self.tableView.scrollIndicatorInsets = UIEdgeInsetsMake(0, 0, 216, 0);
self.tableView.contentInset = UIEdgeInsetsMake(0, 0, 216, 0);

但它不起作用。

Answer 1

您不应该相信textFieldDidBeginEditing:来调整键盘，因为即使用户使用不会显示屏幕键盘的物理键盘进行输入，也会调用此方法。

而是听UIKeyboardWillShowNotification，只有在实际显示键盘时才会触发。您需要执行三个步骤：

从通知userInfo字典中确定键盘的实际大小。尺寸将不同于横向/纵向和不同的设备。
使用确定的尺寸更新contentInset。你可以动画制作，通知甚至可以告诉你键盘动画的持续时间。
将文本字段滚动到视图中，很容易忘记这个！

您可以从here

Answer 2

您可以执行以下操作，但首先请确保您已将UITextField委托设置为自己和

#define kOFFSET_FOR_KEYBOARD 350;

在顶部。这是您想要移动视图的距离

//method to move the view up/down whenever the keyboard is shown/dismissed

-(void)setViewMovedUp:(BOOL)movedUp
{
    [UIView beginAnimations:nil context:NULL];
    [UIView setAnimationDuration:0.3]; // if you want to slide up the view
    [UIView setAnimationBeginsFromCurrentState:YES];

    CGRect rect = self.view.frame;
    if (movedUp)
    {
        // 1. move the view's origin up so that the text field that will be hidden come above the keyboard 
        // 2. increase the size of the view so that the area behind the keyboard is covered up.

        if (rect.origin.y == 0 ) {
            rect.origin.y -= kOFFSET_FOR_KEYBOARD;
            //rect.size.height += kOFFSET_FOR_KEYBOARD;
        }

    }
    else
    {
        if (stayup == NO) {
            rect.origin.y += kOFFSET_FOR_KEYBOARD;
            //rect.size.height -= kOFFSET_FOR_KEYBOARD;
        }
    }
    self.view.frame = rect; 
    [UIView commitAnimations];
}


- (void)keyboardWillHide:(NSNotification *)notif {
    [self setViewMovedUp:NO];
}


- (void)keyboardWillShow:(NSNotification *)notif{
    [self setViewMovedUp:YES];
}


- (void)textFieldDidBeginEditing:(UITextField *)textField {
    stayup = YES;
    [self setViewMovedUp:YES];
}


- (void)textFieldDidEndEditing:(UITextField *)textField {
    stayup = NO;
    [self setViewMovedUp:NO];
}

- (void)viewWillAppear:(BOOL)animated
{
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) 
                                                 name:UIKeyboardWillShowNotification object:self.view.window];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) 
                                                 name:UIKeyboardWillHideNotification object:self.view.window];
}

- (void)viewWillDisappear:(BOOL)animated
{
    // unregister for keyboard notifications while not visible.
    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillShowNotification object:nil];
    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillHideNotification object:nil];
}

移动视图，以便键盘不隐藏文本字段

2 个答案: