How to get high quality bitmap in android?

Question

How to get high quality bitmap in android?

I made a webView since we have spring web project. Our wants to use the project in PDA and print some label with bluetooth printer. So I made a webView and Im going to print the web page have labels. But the "window.print" function is not working with bluetooth printer. So, I tried to print in webView with screenshot.

Sadly when I get the bitmap of the screen by Bitmap.createBitmap function in android, it was really bad quality. So, it was printed with bad quality. I want more good resolution of the print.

How can I get more good resolution of bitmap of the screen?

@RequiresApi(api = Build.VERSION_CODES.O) public Bitmap createBitmapFromView(View view) {

    Display display = getWindowManager().getDefaultDisplay();
    Point size = new Point();
    display.getSize(size);


    //Pre-measure the view so that height and width don't remain null.
    view.measure(View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED),
            View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));

    //Assign a size and position to the view and all of its descendants
    view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight());


    Bitmap bitmapa = Bitmap.createBitmap(width , height , Bitmap.Config.ARGB_8888);


    Canvas c = new Canvas(bitmap);

    view.draw(c);

    return bitmap;
}

Answer 1

disable bitmap scaling

Options options = new BitmapFactory.Options();
    options.inScaled = false;
    Bitmap source = BitmapFactory.decodeResource(a.getResources(), path, options);