View.OnKeyListener用于软键盘 [英] View.OnKeyListener for soft keyboard

问题描述

当某些特殊键被按下/触摸时，我正在使用View.OnKeyListener for EditText做某事.这是该代码的简化版本:

I am using the View.OnKeyListener for EditText to do something when some special keys are pressed/touched. Here is a shorthened version of the code:

public class MyKeyListener implements View.OnKeyListener{
    // ...

    @Override
    public boolean onKey(View v, int keyCode, KeyEvent event) {

        if (event.getAction() == KeyEvent.ACTION_UP) {
            if (keyCode == KeyEvent.KEYCODE_DEL) {
                // do some processing
                return true;
            } else if (keyCode == KeyEvent.KEYCODE_0) {
                // do another processing
                return true;
            }
        }
    }
}

问题在于，根据文档，仅在使用硬键盘时才保证可以调用OnKeyListener.而且，的确，我在某些手机上测试了该功能，但这些功能不适用于软键盘.因此，我想知道是否有类似于该侦听器的东西可以用于软键盘.

The problem is that the OnKeyListener, according to the documentation, is only guaranteed to be called when hard keyboards are used. And, indeed, I tested it on some phones where it doesn't work for soft keyboards. So I was wondering if there is something similar to this listener that would work for soft keyboards.

推荐答案

不能保证，不能保证.

您可以使用TextWatcher并将其附加到任何和所有EditTexts.

You can use a TextWatcher and attach that to any and all EditTexts.

或者，您创建自己的KeyboardView并强制用户使用该KeyboardView，然后可以将期望的侦听器附加到该KeyboardView. https://developer.android.com/guide/topics/text/creating-input-method.html?hl=ja#IMEUI

Or, you create your own KeyboardView and force the user to use that one, then you can attach the expected listeners to it. https://developer.android.com/guide/topics/text/creating-input-method.html?hl=ja#IMEUI

这篇关于View.OnKeyListener用于软键盘的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！