UITextField控件处理键盘弹出时遮住输入框的问题

实现以下三个方法，如果弹出的键盘会遮住输入框 ，整体的界面会向上移动，这样就不会遮住输入框了。自己增加UITextFieldDelegate委托。

只适合iPhone,如果想要支持iPad,只要把216改成iPad上面键盘的高度即可。

C代码

- (void)keyboardWillShow:(NSNotification *)noti

{

//键盘输入的界面调整

//键盘的高度

float height = 216.0;

CGRect frame = self.view.frame;

frame.size = CGSizeMake(frame.size.width, frame.size.height - height);

[UIView beginAnimations:@"Curl"context:nil];//动画开始

[UIView setAnimationDuration:0.30];

[UIView setAnimationDelegate:self];

[self.view setFrame:frame];

[UIView commitAnimations];

}

- (BOOL)textFieldShouldReturn:(UITextField *)textField

{

// When the user presses return, take focus away from the text field so that the keyboard is dismissed.

NSTimeInterval animationDuration = 0.30f;

[UIView beginAnimations:@"ResizeForKeyboard" context:nil];

[UIView setAnimationDuration:animationDuration];

CGRect rect = CGRectMake(0.0f, 0.0f, self.view.frame.size.width, self.view.frame.size.height);

self.view.frame = rect;

[UIView commitAnimations];

[textField resignFirstResponder];

return YES;

}

- (void)textFieldDidBeginEditing:(UITextField *)textField

{

CGRect frame = textField.frame;

int offset = frame.origin.y + 32 - (self.view.frame.size.height - 216.0);//键盘高度216

NSTimeInterval animationDuration = 0.30f;

[UIView beginAnimations:@"ResizeForKeyBoard" context:nil];

[UIView setAnimationDuration:animationDuration];

float width = self.view.frame.size.width;

float height = self.view.frame.size.height;

if(offset > 0)

{

CGRect rect = CGRectMake(0.0f, -offset,width,height);

self.view.frame = rect;

}

[UIView commitAnimations];

}

另外我自己做了一点修改：

在实际用的时候，键盘消失原来的控件并没有回归都原来的位置，而是上移了20个像素，我估计是因为顶部Bar的原因，只要将22行代码改成如下就可以了：

CGRect rect = CGRectMake(0.0f, 20.0f, self.view.frame.size.width, self.view.frame.size.height);