2

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

谁能建议如何解决这个问题?

4

5 回答 5

6

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。那里有很多教程,所以谷歌他们。Here是其中之一。

于 2011-06-22T06:17:52.440 回答
6

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,以上下移动视图,(只需根据需要更改减去的值yourView.frame.origin.y-100即可调整)

    [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];
于 2011-06-22T06:38:42.440 回答
4

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];
}
于 2011-06-22T06:26:27.627 回答
2

当您向上点击 textField 键盘时,您的 textField 会被它隐藏。所以你需要什么,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];

   }

}

希望它可以帮助你。

于 2011-06-22T06:29:27.343 回答
0

我使用自动布局约束来解决这个问题。我将约束作为一个属性,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,并将文本字段移到顶部。完成编辑后,我通过约束将它们移动到它们的原始位置。

-(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;
于 2014-03-15T21:54:32.740 回答