Question

我有一个位于屏幕底部的textField。当我开始编辑时，键盘出现并隐藏textField。

有谁能建议如何解决这个问题？

Answer 1

通常，您会将内容放在滚动视图中，并在键盘出现时向上移动滚动视图。有很多教程，所以google他们。 Here就是其中之一。

Answer 2

您可以在两种不同的方法中使用以下代码，在编辑开始和结束时调用它，上下移动视图，（只需更改yourView.frame.origin.y-100中减去的值w即可根据需要进行调整）

    [UIView beginAnimations:nil context:NULL];
    [UIView setAnimationBeginsFromCurrentState:YES];
    [UIView setAnimationDuration:0.5];      
    yourView.frame = CGRectMake(yourView.frame.origin.x, yourView.frame.origin.y-100, yourView.frame.size.width, yourView.frame.size.height);

    [UIView commitAnimations];

Answer 3

请参阅此代码段。并使用一个UIButton来关闭UIKeyboard。

- (void) animateTextField: (UITextField *)textField up:(BOOL) up
{
const int movementDistance = 200;
const float movementDuration = 0.4f;

int movement = (up ? -movementDistance : movementDistance);

up ? (self.button.enabled= YES) : (self.button.enabled = NO);

[UIView beginAnimations: @"anim" context: nil];
[UIView setAnimationBeginsFromCurrentState: YES];
[UIView setAnimationDuration: movementDuration];
self.view.frame = CGRectOffset(self.view.frame, 0, movement);
[UIView commitAnimations];
}

-(void)textFieldDidBeginEditing:(UITextField*) inTextField
{
[self animateTextField:mText up:YES];
[self addObservers];
}

- (void)addObservers 
{
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(textFieldDidChange:) name:@"UITextFieldTextDidChangeNotification" object:nil];    
}

- (void)textFieldDidChange:(NSNotification*)aNotification 
{
   NSLog(@"TextField data=%@",mText.text);
}   

- (IBAction) doneBtn:(id)sender
{
[mText resignFirstResponder ];
[self animateTextField:mText up:NO];
}

Answer 4

当您点击textField键盘时，textField会隐藏它。所以，你需要，你需要让你的观点，而不是keyboardresign是一个解决方案。所以为了让你查看使用

- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField  delegate for the logic. now see the code

- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField
{

    if(textField.tag==1)  //add tag to your textField to identify it
    {

        [UIView beginAnimations:nil context:NULL];
        [UIView setAnimationDuration:.3];

        CGRect viewFrame=self.view.frame;
        viewFrame=sinViewFrame.size.height+100;
        viewFrameorigin.y-=100; // as required
        self.view.frame=viewFrame;
        [UIView commitAnimations];

   }

}

希望它可以帮到你。

Answer 5

我使用自动布局约束来解决这个问题。我将约束作为属性，并在键盘出现/消失时使用它。我只是将文本字段上方的视图移出屏幕，将textfield移到顶部。完成编辑后，我通过约束将它们移动到原始位置。

-(void)keyboardWillShow:(NSNotification*)notification{
[UIView animateWithDuration:0.25 delay:0.0 options:UIViewAnimationOptionTransitionNone animations:^{
    self.topSpaceLayoutConstraint.constant = -150;
    [self.view setNeedsLayout];
    [self.view layoutIfNeeded];
} completion:NULL];
}

-(void)keyboardWillHide:(NSNotification*)notification
{
[UIView animateWithDuration:0.25 delay:0.0 options:UIViewAnimationOptionTransitionNone animations:^{
    self.topSpaceLayoutConstraint.constant = 10;
    [self.view setNeedsLayout];
    [self.view layoutIfNeeded];
} completion:NULL];
}

@property (weak, nonatomic) IBOutlet NSLayoutConstraint *topSpaceLayoutConstraint;

键盘隐藏UITextField。怎么解决这个？

5 个答案: