Image Scaling

bitmapscaling.java

//getDisplayHeight(context) => (display height in pixels)
    public static int getDisplayHeight(Context context) {
        DisplayMetrics displayMetrics = context.getResources().getDisplayMetrics();
        return displayMetrics.heightPixels;
    }

    // getDisplayWidth(context) => (display width in pixels)
    public static int getDisplayWidth(Context context) {
        DisplayMetrics displayMetrics = context.getResources().getDisplayMetrics();
        return displayMetrics.widthPixels;
    }

    // Scale and maintain aspect ratio given a desired width
    // scaleToFitWidth(bitmap, 100);
    public static Bitmap scaleToFitWidth(Bitmap b, int width)
    {
        float factor = width / (float) b.getWidth();
        return Bitmap.createScaledBitmap(b, width, (int) (b.getHeight() * factor), true);
    }


    // Scale and maintain aspect ratio given a desired height
    // BitmapScaler.scaleToFitHeight(bitmap, 100);
    public static Bitmap scaleToFitHeight(Bitmap b, int height)
    {
        float factor = height / (float) b.getHeight();
        return Bitmap.createScaledBitmap(b, (int) (b.getWidth() * factor), height, true);
    }