android - KeyboardView 键颜色状态在 Android 中未正确设置

Question

我正在将 KeyboardView 用于自定义键盘。我正在尝试更改键的背景颜色。我尝试使用 java 代码，但它没有按预期工作。这是我的代码。

以编程方式创建可绘制对象：

public StateListDrawable getSelectorDrawable() {
        StateListDrawable out = new StateListDrawable();
        out.addState(new int[] { android.R.attr.state_pressed }, createDrawable(Color.GREEN));
        out.addState(new int[] { android.R.attr.state_focused }, createDrawable(Color.GREEN));
        out.addState(new int[] { android.R.attr.state_enabled }, createDrawable(Color.BLUE));
        return out;
    }

public GradientDrawable createDrawable(int color) {
    GradientDrawable out = new GradientDrawable();
    out.setShape(GradientDrawable.RECTANGLE);
    out.setGradientType(GradientDrawable.LINEAR_GRADIENT);
    out.setColor(color);
    out.setStroke(2, color);
    out.setCornerRadius(0F);
    return out;
}

调用方法创建Drawable：

private void drawKeyBackground(Canvas canvas, Keyboard.Key key) {
        Drawable npd = getSelectorDrawable();
        int[] drawableState = key.getCurrentDrawableState();
        if (key.codes[0] != 0) {
            npd.setState(drawableState);
        }
        npd.setBounds(key.x, key.y, key.x + key.width, key.y
                + key.height);
        npd.draw(canvas);
    }


public class CustomKeyBoard extends KeyboardView {

    Context context;

    @Override
    public void onDraw(Canvas canvas) {
        // TODO Auto-generated method stub
        super.onDraw(canvas);

        List<Keyboard.Key> keys = getKeyboard().getKeys();
        for (Keyboard.Key key : keys) {
            if (key.codes[0] == 53) {
                drawKeyBackground(canvas, key);
                drawText(canvas, key);
            }
        }

    }

这里 press_state 颜色正在工作。但是 normal_state 颜色不起作用。请给我一些想法来解决这个问题。

OP：正常状态：

OP：专注状态：