Android 将 View 转换为位图

Question

我正在尝试将 View 转换为位图，但我失去了黑色。我正在这样转换:

Bitmap returnedBitmap = Bitmap.createBitmap(view.getWidth(),view.getHeight(), Bitmap.Config.ARGB_8888);

Example

如何转换为位图才能使百分比值的黑色不丢失？

谢谢， 问候

Answer 1

您好，您可以使用此方法将 View 转换为位图

private Bitmap createBitmapFromView(Context context, View view) {
        DisplayMetrics displayMetrics = new DisplayMetrics();
        ((Activity) context).getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
        view.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));

        view.measure(displayMetrics.widthPixels, displayMetrics.heightPixels);
        view.layout(0, 0, displayMetrics.widthPixels, displayMetrics.heightPixels);
        view.buildDrawingCache();
        Bitmap bitmap = Bitmap.createBitmap(view.getMeasuredWidth(), view.getMeasuredHeight(), Bitmap.Config.ARGB_8888);

        Canvas canvas = new Canvas(bitmap);
        view.draw(canvas);

        return bitmap;
    }