Question

如何实现被键盘遮挡时，带有textfield的tableview自动上移

Answer 1

您好，很高兴为您解答。

最正规的办法，用通知
step 1：
在进入视图的时候添加监视：

// Observe keyboard hide and show notifications to resize the text view appropriately.
 [[NSNotificationCenter defaultCenter] addObserver:self 
 selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotifi
cation object:nil];
 [[NSNotificationCenter defaultCenter] addObserver:self 
 selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotifi
cation object:nil];

   

step 2:
在键盘动作的时候移动视图：

- (void)keyboardWillShow:(NSNotification *)notification { 
 NSDictionary *userInfo = [notification userInfo];
 // Get the origin of the keyboard when it's displayed.
NSValue* aValue = [userInfo objectForKey:UIKeyboardFrameEndUserInfoKey];
 // Get the top of the keyboard as the y coordinate of its origin in self's view's coordinate system. The bottom of the text view's frame should align with the top of the keyboard's final position.
 CGRect keyboardRect = [aValue CGRectValue];
 keyboardRect = [self.view convertRect:keyboardRect fromView:nil];
 CGFloat keyboardTop = keyboardRect.origin.y;
CGRect newTextViewFrame = self.view.bounds;
newTextViewFrame.size.height = keyboardTop - self.view.bounds.origin.y;
  // Get the duration of the animation.
 NSValue *animationDurationValue = [userInfo objectForKey:UIKeyboardAnimationDurat
ionUserInfoKey]; NSTimeInterval animationDuration;
 [animationDurationValue getValue:&animationDuration];
 // Animate the resize of the text view's frame in sync with the keyboard's appearance.
 [UIView beginAnimations:nil context:NULL];
 [UIView setAnimationDuration:animationDuration];
  textView.frame = newTextViewFrame;
 [UIView commitAnimations];
}

- (void)keyboardWillHide:(NSNotification *)notification {
 NSDictionary* userInfo = [notification userInfo];
 NSValue *animationDurationValue = [userInfo objectForKey:UIKeyboardAnimationDurat
ionUserInfoKey]; NSTimeInterval animationDuration;
[animationDurationValue getValue:&animationDuration];
 [UIView beginAnimations:nil context:NULL];
 [UIView setAnimationDuration:animationDuration];
 textView.frame = self.view.bounds;
[UIView commitAnimations];
}

step 3:

在退出视图的时候注销通知
viewDidUnload:

复制代码

[[NSNotificationCenter defaultCenter] removeObserver:self 
name:UIKeyboardWillShowNotification object:nil]; 
[[NSNotificationCenter defaultCenter] removeObserver:self 
name:UIKeyboardWillHideNotification object:nil];

   

dealloc:

[[NSNotificationCenter defaultCenter] removeObserver:self name:nil object:nil];

   

代码是摘自apple sample code KeyboardAccessory.

细节自己修改，比如textView

如若满意，请点击右侧【采纳答案】，如若还有问题，请点击【追问】

希望我的回答对您有所帮助，望采纳！

                                                                                                                             ~ O(∩_∩)O~