iOS 输入文字时文本框上移

1.在xib的头文件里面添加textField的委托协议，如：@interface ZLViewController : UIViewController<UITextFieldDelegate>;

2.在xib 的 .m文件里的函数viewDidLoad添加某个或某几个textField的delegate如：self.messageTextField.delegate=self;

3.然后添加相应的函数如下：

//键盘上移

//该方法为点击输入文本框要开始输入是调用的代理方法：就是把view上移到能看见文本框的地方

-(void)textFieldDidBeginEditing:(UITextField *)textField

{

    CGFloat keyboardHeight = 216.0f;

    if (self.view.frame.size.height - keyboardHeight <= textField.frame.origin.y + textField.frame.size.height) {

        CGFloat y = textField.frame.origin.y - (self.view.frame.size.height - keyboardHeight - textField.frame.size.height - 5);

        [UIViewbeginAnimations:@"srcollView"context:nil];

        [UIViewsetAnimationCurve:UIViewAnimationCurveEaseInOut];

        [UIViewsetAnimationDuration:0.275f];

        self.view.frame = CGRectMake(self.view.frame.origin.x, -y, self.view.frame.size.width, self.view.frame.size.height);

        [UIViewcommitAnimations];

    }

}

 

//该方法为点击虚拟键盘Return，要调用的代理方法：隐藏虚拟键盘

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

    [textField resignFirstResponder];

    returnYES;

}

 

//该方法为完成输入后要调用的代理方法：虚拟键盘隐藏后，要恢复到之前的文本框地方

- (void)textFieldDidEndEditing:(UITextField *)textField{

    [UIViewbeginAnimations:@"srcollView"context:nil];

    [UIViewsetAnimationCurve:UIViewAnimationCurveEaseInOut];

    [UIViewsetAnimationDuration:0.275f];

    self.view.frame = CGRectMake(self.view.frame.origin.x, 0, self.view.frame.size.width, self.view.frame.size.height);

    [UIViewcommitAnimations];

}