在NSTextField中按下Enter键时执行操作？-ExecuteanActionwhentheEnter-KeyispressedinaNSTextField?

You can do this by setting the text field's action. In IB, wire the text field's selector to your controller or whatever object presents the IBAction you want to use.

您可以通过设置文本字段的操作来完成此操作。在IB中,将文本字段的选择器连接到控制器或任何呈现您要使用的IBAction的对象。

To set it in code, send the NSTextField a setTarget: message and a setAction: message. For example, if you're setting this on your controller object in code, and your textField outlet is called myTextField:

要在代码中设置它,请向NSTextField发送setTarget:消息和setAction:消息。例如,如果您在代码中的控制器对象上设置此项,并且textField出口名为myTextField:

- (void)someAction:(id)sender
{
  // do something interesting when the user hits  in the text field
}

// ...

[myTextField setTarget:self];
[myTextField setAction:@selector(someAction:)];

You have to do only this

你必须这样做

For some keys (Enter, Delete, Backspace, etc)

对于某些键(Enter,Delete,Backspace等)

self.textfield.delegate = self;

and then implement this method

然后实现此方法

- (BOOL)control:(NSControl *)control textView:(NSTextView *)fieldEditor doCommandBySelector:(SEL)commandSelector
{
    NSLog(@"Selector method is (%@)", NSStringFromSelector( commandSelector ) );
    if (commandSelector == @selector(insertNewline:)) {
        //Do something against ENTER key

    } else if (commandSelector == @selector(deleteForward:)) {
        //Do something against DELETE key

    } else if (commandSelector == @selector(deleteBackward:)) {
        //Do something against BACKSPACE key

    } else if (commandSelector == @selector(insertTab:)) {
        //Do something against TAB key
    }

    // return YES if the action was handled; otherwise NO
} 

In your delegate (NSTextFieldDelegate), add the following:

在您的委托(NSTextFieldDelegate)中,添加以下内容:

-(void)controlTextDidEndEditing:(NSNotification *)notification
{
    // See if it was due to a return
    if ( [[[notification userInfo] objectForKey:@"NSTextMovement"] intValue] == NSReturnTextMovement )
    {
        NSLog(@"Return was pressed!");
    }
}

It's very easy and you can do it directly from UI editor

它非常简单,您可以直接从UI编辑器进行操作

1. Right click the Text Feild, drag Action reference to the button as shown below in the screenshot

右键单击Text Feild,将Action引用拖动到按钮,如下面的屏幕截图所示

2. Now it will give you some option as shown in screen shot below, you need to select perform click

现在它将为您提供一些选项,如下面的屏幕截图所示,您需要选择执行单击

3. Now it should look like this

现在看起来应该是这样的

Note: The event will be raised as soon as you press Tab or Enter key. In case you want the action should only be raised when user presses the Enter key then you have to do a setting. Go to the Attribute inspector and change the Action property to Send on Enter only as shown in screen shot below

注意:只要按Tab键或Enter键,就会引发事件。如果您想要仅在用户按下Enter键时引发操作,则必须进行设置。转到“属性”检查器,将“操作”属性更改为“仅在输入时发送”,如下面的屏幕截图所示

The Swift 3 version of @M.ShuaibImran's solution:

Swift 3版@ M.ShuaibImran的解决方案:

First subclass your ViewController to: NSTextFieldDelegate

首先将ViewController子类化为:NSTextFieldDelegate

class MainViewController: NSViewController, NSTextFieldDelegate {
  ...
} 

Assign the textField delegate to the ViewController in your viewDidLoad():

将textField委托分配给viewDidLoad()中的ViewController:

self.textField.delegate = self

Include the NSTextFieldDelegate method that handles keyboard responders:

包括处理键盘响应器的NSTextFieldDelegate方法:

func control(_ control: NSControl, textView: NSTextView, doCommandBy commandSelector: Selector) -> Bool {
    if (commandSelector == #selector(NSResponder.insertNewline(_:))) {
        // Do something against ENTER key
        print("enter")
        return true
    } else if (commandSelector == #selector(NSResponder.deleteForward(_:))) {
        // Do something against DELETE key
        return true
    } else if (commandSelector == #selector(NSResponder.deleteBackward(_:))) {
        // Do something against BACKSPACE key
        return true
    } else if (commandSelector == #selector(NSResponder.insertTab(_:))) {
        // Do something against TAB key
        return true
    } else if (commandSelector == #selector(NSResponder.cancelOperation(_:))) {
        // Do something against ESCAPE key
        return true
    }

    // return true if the action was handled; otherwise false
    return false
}

NSTextFieldDelegate's – control:textView:doCommandBySelector: is your friend.

NSTextFieldDelegate的 - 控件:textView:doCommandBySelector:是你的朋友。

Look for the insertNewline: command.

查找insertNewline:命令。

In Interface Builder - click on your NSTextField, go to the connections editor, drag from selector to your controller object - you're actions should come up!

在Interface Builder中 - 单击您的NSTextField,转到连接编辑器,从选择器拖动到您的控制器对象 - 您应该采取行动!

Best way to do that is to bind the NSTextField value with NSString property.

最好的方法是将NSTextField值与NSString属性绑定。

For Example,define a method:

例如,定义一个方法:

(void)setTextFieldString:(NSString *)addressString {}

add bindings:

[textField bind:@"value" toObject:self withKeyPath:@"self.textFieldString" options:nil];

Enter any text and hit the return key, setTextFieldString will be called.

输入任何文本并点击返回键,将调用setTextFieldString。