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igo
Asked:2020-03-24 21:40:11 +0800 CST2020-03-24 21:40:11 +0800 CST

Android 上的 SVG 到 JPEG

  • 772

您知道在离线运行android应用程序时将SVG（矢量图像）转换为JPG/JPEG/PNG （任何光栅格式）的方法吗？

android

1 个回答

  1. Best Answer

    VectorDrawable可以在Canvas上绘制，Canvas可以保存为Bitmap，Bitmap本质上就是位图。

    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
private static Bitmap getBitmap(Context context, int drawableId) {
    Drawable drawable = ContextCompat.getDrawable(context, drawableId);
    if (drawable instanceof BitmapDrawable) {
        return BitmapFactory.decodeResource(context.getResources(), drawableId);
    } else if (drawable instanceof VectorDrawable) {
        return getBitmap((VectorDrawable) drawable);
    } else {
        throw new IllegalArgumentException("unsupported drawable type");
    }
}

@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private static Bitmap getBitmap(VectorDrawable vectorDrawable) {
    Bitmap bitmap = Bitmap.createBitmap(vectorDrawable.getIntrinsicWidth(),
            vectorDrawable.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmap);
    vectorDrawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
    vectorDrawable.draw(canvas);
    return bitmap;
}

    位图转PNG

      bitmap.compress(Bitmap.CompressFormat.PNG, 100, someOutStream)

    Android 的 SVG 库还有一个选项https://github.com/japgolly/svg-android

    • 2

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