欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页

UITextField控件处理键盘弹出时遮住输入框的问题。

程序员文章站 2022-07-15 19:03:08
...

原文连接:
http://www.devdiv.com/thread-70159-1-1.html

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。
- (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);