IOS 键盘遮住了TextField_ios uitextfield keyb-优快云博客

本文介绍了一个iOS应用中如何通过UITextField代理方法来实现键盘显示时视图调整及键盘隐藏的功能。具体包括当用户点击文本框时调整视图以适配键盘高度，并在用户按下返回键时隐藏键盘。

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- (void)viewDidLoad
{
    [super viewDidLoad];
    
    //self.picturename.delegate=self;
    self.contextField.delegate=self;
}



- (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, 20.0f, self.view.frame.size.width, self.view.frame.size.height);
    self.view.frame = rect;
    [UIView commitAnimations];
    [textField resignFirstResponder];
    return YES;
}
//隐藏键盘
- (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];
}
- (void)textFieldDidEndEditing:(UITextField *)textField
{
    NSTimeInterval animationDuration = 0.30f;
    [UIView beginAnimations:@"ResizeForKeyboard" context:nil];
    [UIView setAnimationDuration:animationDuration];
    CGRect rect = CGRectMake(0.0f, 20.0f, self.view.frame.size.width, self.view.frame.size.height);
    self.view.frame = rect;
    [UIView commitAnimations];
    [textField resignFirstResponder];
    
}