How to upload an image in Android Studio with the ability to scale it on the phone?

Question

Android

How to upload an image in Android Studio with the ability to scale it on the phone? Are there links to a resource with ready-made similar projects? If not, then help me do it, explain how to upload your images to Android Studio and, if possible, how to scale them?

Answer 1

Here's an example of a function from the book that takes an image by filename and returns a scaled bitmap.

public static Bitmap getScaledBitmap(String path, int destWidth, int destHeight){

        //read in the dimensions of the image on disk
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        BitmapFactory.decodeFile(path, options);

        float srcWidth = options.outWidth;
        float srcHeight = options.outHeight;

        //figure out how much to scale down by
        int inSampleSize = 1;
        if(srcHeight > destHeight || srcWidth > destWidth){
            if(srcWidth > srcHeight)
                inSampleSize = Math.round(srcHeight / destHeight);
            else
                inSampleSize = Math.round(srcWidth / destWidth);
        }

        options = new BitmapFactory.Options();
        options.inSampleSize = inSampleSize;

        //read in and create final bitmap
        return BitmapFactory.decodeFile(path, options);
    }