键盘存在时 UIViewController 向上移动

Posted 2023-03-11

【中文标题】键盘存在时 UIViewController 向上移动

【英文标题】：UIViewController move up when keyboard present

【发布时间】：2014-04-29 04:02:16

【问题描述】：

我有一个带有文本字段的 uiviewcontroller。单击底部文本字段时，该字段被键盘覆盖，当您单击文本字段时，如何使其“向上滚动”。或者只是拥有它，以便 uiviewcontroller 可以滚动

【问题讨论】：

Google“当键盘出现时 UIViewController 向上移动”

【参考方案1】：

尝试将视图的所有文本字段放在滚动视图中，然后使视图控制器符合 UITextFieldDelegate 和 UINavigationControllerDelegate。

在 viewController.m 中定义以下方法

-(IBAction)textFieldDidBeginEditing:(UITextField *)sender // connect all textfields in your view to this method

    sender.delegate = self;

//called when UIKeyboardDidShowNotification is sent.
-(void)keyboardWasShown:(NSNotification *)aNotification

    NSDictionary * info =   [aNotification userInfo];
    CGSize  kbSize  =   [[info objectForKey:UIKeyboardFrameBeginUserInfoKey]CGRectValue].size;
    [self.scrollView setContentOffset:CGPointMake(0, kbSize.height) animated:YES];


// Called when the UIKeyboardWillHideNotification is sent,method is called when the keyboard is closed. It returns the scroll view to its original position.
- (void)keyboardWillBeHidden:(NSNotification*)aNotification

    [self.scrollView setContentOffset:CGPointMake(0, 0) animated:YES];


//This method is called when you have finished editing a text field.
- (BOOL)textFieldShouldReturn:(UITextField *)textField 
    return [textField resignFirstResponder];

把它放在你的 viewDidLoad 中：

- (void)viewDidLoad

    [super viewDidLoad];        
    // Do any additional setup after loading the view.
    self.scrollView.scrollEnabled = YES;
    self.automaticallyAdjustsScrollViewInsets = YES;

这可能会奏效...... HTH :)