android - OnKeyListener 和 OnEditorActionListener 之间的确切区别是什么？

Question

我读过 OnKeyListener 用于检测硬键，OnEditorActionListener 用于检测软键。然而，网上有很多例子，因此似乎它们在任何情况下都可以正常工作。

我都试过了，OnKeyListener 只能在真实设备上运行，而 OnEditorActionListener 可以在真实设备和模拟器上运行也是。

因此，我想知道它们之间的区别，并弄清楚何时使用它们中的任何一个。如果有人能向我解释，我将不胜感激。

Answer 1

只是文档中的一小部分复制粘贴:

 /**
     * Interface definition for a callback to be invoked when a hardware key event is
     * dispatched to this view. The callback will be invoked before the key event is
     * given to the view. This is only useful for hardware keyboards; a software input
     * method has no obligation to trigger this listener.
     */
    public interface OnKeyListener {
        /**
         * Called when a hardware key is dispatched to a view. This allows listeners to
         * get a chance to respond before the target view.
         * <p>Key presses in software keyboards will generally NOT trigger this method,
         * although some may elect to do so in some situations. Do not assume a
         * software input method has to be key-based; even if it is, it may use key presses
         * in a different way than you expect, so there is no way to reliably catch soft
         * input key presses.
         *
         * @param v The view the key has been dispatched to.
         * @param keyCode The code for the physical key that was pressed
         * @param event The KeyEvent object containing full information about
         *        the event.
         * @return True if the listener has consumed the event, false otherwise.
         */
        boolean onKey(View v, int keyCode, KeyEvent event);
    }

Do not assume a software input method has to be key-based; even if it is, it may use key presses in a different way than you expect, so there is no way to reliably catch soft input key presses.

同样，

   /**
     * Set a special listener to be called when an action is performed
     * on the text view.  This will be called when the enter key is pressed,
     * or when an action supplied to the IME is selected by the user.  Setting
     * this means that the normal hard key event will not insert a newline
     * into the text view, even if it is multi-line; holding down the ALT
     * modifier will, however, allow the user to insert a newline character.
     */
    public void setOnEditorActionListener(OnEditorActionListener l) {
        createEditorIfNeeded();
        mEditor.createInputContentTypeIfNeeded();
        mEditor.mInputContentType.onEditorActionListener = l;
    }