ios解决键盘挡住输入框的方法

增加UITextFieldDelegate委托


- (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];               
}

在看的时候不要直接复制代码，先研究懂了之后，再做测试。