键盘覆盖TextField（多个文本字段）

Question

我有3个文本字段，但键盘覆盖文本字段时会弹出每个文本字段。如何在每次键盘弹出时移动文本字段？

当前尝试：

调用当前使用下面代码的尝试，但根本不会更改布局（遵循不同的StackOverflow答案）。

代码摘录：

class UploadPhotoViewController: UIViewController, UIImagePickerControllerDelegate, UITextFieldDelegate, UIActionSheetDelegate {

    @IBOutlet weak var photoTitleTextField: UITextField! // title textfield
    @IBOutlet var photoCommentTextField: UITextField! 
    @IBOutlet var photoPriceTextField: UITextField!


    override func viewDidAppear(animated: Bool) {
        super.viewDidAppear(animated)


        NSNotificationCenter.defaultCenter().addObserver(self,
            selector: Selector("keyboardWillShow:"),
            name: UIKeyboardWillShowNotification,
            object: nil)
        NSNotificationCenter.defaultCenter().addObserver(self,
            selector: Selector("keyboardWillHide:"),
            name: UIKeyboardWillHideNotification,
            object: nil)
    }

    override func viewWillDisappear(animated: Bool) {
        NSNotificationCenter.defaultCenter().removeObserver(self)

        super.viewWillDisappear(animated)
    }
    override func viewDidLoad() {
        super.viewDidLoad()

        self.photoTitleTextField.delegate = self;
        self.photoCommentTextField.delegate = self;
        self.photoPriceTextField.delegate = self;

        }
    }

    func goBack()
    {
        dismissViewControllerAnimated(true, completion: nil)
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    func textFieldShouldReturn(textField: UITextField) -> Bool {
        self.view.endEditing(true);
        return false;
    }

    override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
        self.view.endEditing(true);
    }

    func keyboardWillShow(notification: NSNotification) {

        println("will show")

        var info = notification.userInfo!
        var keyboardFrame: CGRect = (info[UIKeyboardFrameEndUserInfoKey] as! NSValue).CGRectValue()

        UIView.animateWithDuration(0.1, animations: { () -> Void in
            self.bottomConstraint.constant = keyboardFrame.size.height + 20
        })


    }

    func keyboardWillHide(notification: NSNotification) {
        println("will hide")

    }

}

这就是UIViewController的样子：

Answer 1

您可以在here的项目中使用IQKeyboardManager。

  

要使用IQKeyboardManager，只需将源文件添加到项目中即可。

主要功能

1. CODELESS ，零行代码

2. 自动投放

3. 没有更多UIScrollView

4. 没有更多的子类

5. 不再需要手动工作

6. 没有更多#imports

试试吧！

Answer 2

您可以从TPKeyboardAvoiding示例获得帮助以解决此问题。请看这里https://github.com/michaeltyson/TPKeyboardAvoiding

Answer 3

你快到了。

在keyboardWillShow:方法中，您需要设置contentInset和scrollIndicatorInsets

示例：

- (void)keyboardWasShown:(NSNotification *)notification {
    NSDictionary *info = [notification userInfo];

    CGREct keyboardRect = [[info objectForKey:UIKeyboardFrameBeginUserInfo] CGRectValue];

    CGFloat bottomInset = keyboardRect.size.height;

    UIEdgeInsets contentInsets = UIEdgeInsetsMake(0.0, 0.0, bottomInset, 0.0);

    [UIView animateWithDuration:0.5 animations:^{
        self.contentInset = contentInsets;
        self.scrollIndicatorInsets = contentInsets;
    }];
}