android-studio - 将 GradientDrawable 转换为位图

Question

对不起，如果我听起来太菜鸟。有什么方法可以像转换 GradientDrawable

GradientDrawable gd = new GradientDrawable(GradientDrawable.Orientation orientation, int[] colors);

成位图格式。我正在尝试将 GradientDrawable 设置为设备壁纸。

非常感谢你。:)

Answer 1

尝试这个：

这不是一个完美的解决方案，因为我不得不硬编码宽度/高度，GradientDrawable但无论如何它似乎都可以正常工作。

public static Bitmap drawableToBitmap(Context mContext, int drawableInt) {
    Bitmap bitmap;

    Drawable drawable = getDrawable(mContext, drawableInt);

    if (drawable instanceof BitmapDrawable) {
        BitmapDrawable bitmapDrawable = (BitmapDrawable) drawable;
        if(bitmapDrawable.getBitmap() != null) {
            return bitmapDrawable.getBitmap();
        }
    }else if(drawable instanceof GradientDrawable){
        GradientDrawable gradientDrawable = (GradientDrawable) drawable;

        bitmap = Bitmap.createBitmap(140, 140, Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(bitmap);
        gradientDrawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
        gradientDrawable.draw(canvas);
        return bitmap;
    }

    if(drawable.getIntrinsicWidth() <= 0 || drawable.getIntrinsicHeight() <= 0) {
        bitmap = Bitmap.createBitmap(1, 1, Bitmap.Config.ARGB_8888); // Single color bitmap will be created of 1x1 pixel
    } else {
        bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
    }

    Canvas canvas = new Canvas(bitmap);
    drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
    drawable.draw(canvas);
    return bitmap;
}