键盘正在IOS中隐藏文本字段

我已经在IOS中使用带有一些文本字段的滚动视图创建了一个表单。景色是这样的,

当我开始编辑状态或以下字段时，键盘会隐藏该字段。像这样,

---

我应该怎么做才能看到以下字段（即状态和以下）？

您需要在应用程序中使用TPAvoidingKeyBoard库您的问题已经解决

请参阅此链接。下载此项目并将其添加到您的项目中

然后，首先必须将scrollview添加到视图中，然后将所有文本字段添加到该scrollview中，并将TPAvoidingScrollView添加到自定义类中

试试这段代码

 - (BOOL)textFieldShouldBeginEditing:(UITextField *)textField
 {
     if(textField==tfLocation)
     {
         [self.view setFrame:CGRectMake(self.view.frame.origin.x, self.view.frame.origin.y-50, self.view.frame.size.width, self.view.frame.size.height)];
     }
     return YES;
 }

 - (void)textFieldDidEndEditing:(UITextField *)textField
{
    [self.view setFrame:CGRectMake(self.view.frame.origin.x, 0, self.view.frame.size.width, self.view.frame.size.height)];
}

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在发布问题之前，您肯定应该在堆栈溢出本身中搜索此项。无论如何，你可以在这里找到答案

符合协议

UITextFieldDelegate

无论您的视图是否移动，都要将BOOL变量

移动

以发出信号

然后实现委托方法

-(void)textFieldDidBeginEditing:(UITextField *)textField {
    if(!moved) {
     [self animateViewToPosition:self.view directionUP:YES];
    moved = YES;
  }
}

-(void)textFieldDidEndEditing:(UITextField *)textField {
 [textField resignFirstResponder];
}

-(BOOL)textFieldShouldReturn:(UITextField *)textField {
 [textField resignFirstResponder];
  if(moved) {
     [self animateViewToPosition:self.view directionUP:NO];
  }
 moved = NO;
 return YES;
}


-(void)animateViewToPosition:(UIView *)viewToMove directionUP:(BOOL)up {

   const int movementDistance = -60; // tweak as needed
   const float movementDuration = 0.3f; // tweak as needed

   int movement = (up ? movementDistance : -movementDistance);
   [UIView beginAnimations: @"animateTextField" context: nil];
   [UIView setAnimationBeginsFromCurrentState: YES];
   [UIView setAnimationDuration: movementDuration];
   viewToMove.frame = CGRectOffset(viewToMove.frame, 0, movement);
   [UIView commitAnimations];
}

---

你的代码很好。但是，您必须更改UIScrollView的y位置，而不是高度。我已经更改了你的代码和更新。请更新这个

步骤1:在类的ViewDidLoad方法中，设置监听有关键盘的消息：

// Listen for keyboard appearances and disappearances
[[NSNotificationCenter defaultCenter] addObserver:self 
                                         selector:@selector(keyboardDidShow:)
                                             name:UIKeyboardDidShowNotification
                                           object:nil];

[[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(keyboardDidHide:)
                                             name:UIKeyboardDidHideNotification
                                           object:nil];

第2步：通过在同一类中实现选择器方法，向上/向下滚动视图

- (void)keyboardDidShow: (NSNotification *) notif{
    //Keyboard becomes visible
    scrollView.frame = CGRectMake(scrollView.frame.origin.x, 
                                  scrollView.frame.origin.y - 220, 
                                  scrollView.frame.size.width,
                                  scrollView.frame.size.height);   //move up
}

- (void)keyboardDidHide: (NSNotification *) notif{
    //keyboard will hide
    scrollView.frame = CGRectMake(scrollView.frame.origin.x, 
                                  scrollView.frame.origin.y + 220, 
                                  scrollView.frame.size.width,
                                  scrollView.frame.size.height);   //move down
}

你可以试试这个代码

 - (BOOL)textFieldShouldBeginEditing:(UITextField *)textField
 {
     if(textField==tfLocation)
     {
         [self.view setFrame:CGRectMake(self.view.frame.origin.x, self.view.frame.origin.y-50, self.view.frame.size.width, self.view.frame.size.height)];
     }
     return YES;
 }

 - (void)textFieldDidEndEditing:(UITextField *)textField
{
    [self.view setFrame:CGRectMake(self.view.frame.origin.x, 0, self.view.frame.size.width, self.view.frame.size.height)];
}

在viewcontroller.m文件顶部添加以下代码

static const CGFloat KEYBOARD_ANIMATION_DURATION = 0.3;
static const CGFloat MINIMUM_SCROLL_FRACTION = 0.2;
static const CGFloat MAXIMUM_SCROLL_FRACTION = 0.8;
static const CGFloat PORTRAIT_KEYBOARD_HEIGHT = 216;
static const CGFloat LANDSCAPE_KEYBOARD_HEIGHT = 162;
CGFloat animatedDistance;

内部文本字段应开始编辑

 -(BOOL) textFieldShouldBeginEditing:(UITextField*)textField
 {    
     CGRect textFieldRect = [self.view.window convertRect:textField.bounds fromView:textField];
    CGRect viewRect = [self.view.window convertRect:self.view.bounds fromView:self.view];
    CGFloat midline = textFieldRect.origin.y + 0.5 * textFieldRect.size.height;
    CGFloat numerator =  midline - viewRect.origin.y  - MINIMUM_SCROLL_FRACTION * viewRect.size.height;
    CGFloat denominator = (MAXIMUM_SCROLL_FRACTION - MINIMUM_SCROLL_FRACTION)
    * viewRect.size.height;
    CGFloat heightFraction = numerator / denominator;
    if (heightFraction < 0.0)
    {
        heightFraction = 0.0;
    }  
    else if (heightFraction > 1.0)
    {
        heightFraction = 1.0;
    }
    UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];
   if (orientation == UIInterfaceOrientationPortrait ||
    orientation == UIInterfaceOrientationPortraitUpsideDown)
   {
        animatedDistance = floor(PORTRAIT_KEYBOARD_HEIGHT * heightFraction);
   }
   else
   {
       animatedDistance = floor(LANDSCAPE_KEYBOARD_HEIGHT * heightFraction);
   }
   CGRect viewFrame = self.view.frame;
   viewFrame.origin.y -= animatedDistance;

   [UIView beginAnimations:nil context:NULL];
   [UIView setAnimationBeginsFromCurrentState:YES];
   [UIView setAnimationDuration:KEYBOARD_ANIMATION_DURATION];
   [self.view setFrame:viewFrame];
   [UIView commitAnimations];
   return YES;

---

在发布到SO之前，至少先到谷歌搜索一下。@Virussmca:浏览了6153次（2015年11月1日）。我把他们（搜索谷歌的人）带到这里：据我所知，DNo在iOS8中不再工作（在iOS10上）我尝试过使用这种方法，但是键盘消失了（完全是黑色的）。有人有过类似的问题吗？@pita是的，发生在我身上，但在endEditing方法中它并不是真正的问题。键盘也是黑色的，画面越来越大。在我点击文本字段时，是否可以将此代码与UIViewController一起使用？因为我的视图没有滚动视图，问题是只有文本字段被翻译，而不是所有的主视图。同样的谢谢，有没有办法为运动设置动画？@Chris你可以将此代码放入

[UIView animateWithDuration:animations:completion:

中进行动画设置