如何在ios开发中不让键盘弹出时挡住了文本框的输入

最新推荐文章于 2025-07-28 09:59:43 发布

WHY_IOS

最新推荐文章于 2025-07-28 09:59:43 发布

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文章标签： ios uiview float keyboard user

本文介绍了一个iOS应用中针对键盘弹出、隐藏时视图自动调整的实现方法。通过监听键盘显示通知来调整视图大小，并在用户按下返回键时关闭键盘。此外，还实现了在文本框开始和结束编辑时对视图进行相应的动画调整。

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- (void)keyboardWillShow:(NSNotification *)noti

{    //键盘输入的界面调整        

    //键盘的高度

    float height = 220.0;                

    CGRect frame = self.view.frame;        

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

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

    [UIView setAnimationDuration:0.30];           

    [UIViewsetAnimationDelegate: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;        

    [UIViewbeginAnimations:@"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];        

    [self.commentTextresignFirstResponder];

    return YES;        

}

- (void)textFieldDidBeginEditing:(UITextField *)textField

{        

    CGRect frame = textField.superview.frame;

    int offset = frame.origin.y +32 - (self.view.frame.size.height -220.0);

    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];                

}

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

    CGRect frame = textField.frame;

    int offset = frame.origin.y +32 - (self.view.frame.size.height +220);

    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;        

    }        

    [UIViewcommitAnimations]; 

    [textField resignFirstResponder]; 

}