获取键盘高度,调整输入框位置

最新推荐文章于 2023-07-18 10:26:18 发布

wyon.wang

最新推荐文章于 2023-07-18 10:26:18 发布

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分类专栏： iOS

本文链接：https://blog.youkuaiyun.com/silence_0313/article/details/49451221

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本文介绍了如何使用iOS的通知中心来监听键盘的显示与隐藏事件，并通过这些事件来动态调整视图的位置，确保输入框不会被键盘遮挡，提供更好的用户体验。

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[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWasShown:) name:UIKeyboardWillShowNotification object:nil];

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillBeHidden:) name:UIKeyboardWillHideNotification object:nil];

- (void)keyboardWasShown:(NSNotification *)aNotification{
    CGRect keyBoardFrame = [[[aNotification userInfo] objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue];
    NSLog(@"%f",keyBoardFrame.size.height);
    [self changeViewFrame:keyBoardFrame.size.height];
}
- (void)keyboardWillBeHidden:(NSNotification *)notif{
    NSDictionary *info = [notif userInfo];
    NSValue *value = [info objectForKey:UIKeyboardFrameBeginUserInfoKey];
    CGSize keyboardSize = [value CGRectValue].size;
    [self changeBackFrame];
    NSLog(@"%f",keyboardSize.height);
}

-(void)changeViewFrame:(CGFloat)height{
    [UIView animateWithDuration:0.3 animations:^{
        CGRect frame=self.view.frame;
        frame.origin.y=-height+kScreenSize.height/20-kScreenSize.height/14.23;
        self.view.frame=frame;
    }];
}

-(void)changeBackFrame{
    [UIView animateWithDuration:0.3 animations:^{
        CGRect frame=self.view.frame;
        frame.origin.y=0.0;
        self.view.frame=frame;
    }];
}