自定义＆LT的外观;按键＆GT; [英] Customize the appearance of a <Key>

问题描述

一些第三方键盘有多个字符的每一个关键，例如更好的键盘8具有数字和标点符号以上各按键上的字母：

Some 3rd party keyboards have more than one character on each key, for example Better Keyboard 8 has numbers and punctuation above the letters on each key:

可以这样用＆LT做了什么？如果是的话，我可以不知道怎样。我想AP preciate如果有人知道如何。

Can this be done with the <Key> tag? If so I cannot figure out how. I would appreciate if anybody knows how.

在此先感谢， 巴里

推荐答案

我想它了，所以我回答我的问题。

I figured it out so I am answering my own question.

有不能在XML中进行，但可以在Java通过重写KeyboardView的的OnDraw（）方法来进行。这毫无意义的示例绘制每个按键顶部的小字母后的密钥由父类得出：

It cannot be done in XML, but it can be done in Java by overriding the onDraw() method of KeyboardView. This pointless example draws a small letter at the top of each key after the keys are drawn by the parent class:

public class MyKeyboardView extends KeyboardView {
    @Override
    public void onDraw(Canvas canvas) {
        super.onDraw(canvas);

        Paint paint = new Paint();
        paint.setTextAlign(Paint.Align.CENTER);
        paint.setTextSize(25);
        paint.setColor(Color.RED);

        List<Key> keys = getKeyboard().getKeys();
        for(Key key: keys) {
            if(key.label != null)
                canvas.drawText(key.label.toString(), key.x + (key.width/2), key.y + 25, paint);
        }
    }
}

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