Utility to be used with images. Load nine patch through code, method to apply greyscale on ImageView

Imageutils

package org.fingerlinks.mobile.android.utils;

import android.annotation.TargetApi;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.NinePatch;
import android.graphics.Rect;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.NinePatchDrawable;
import android.renderscript.Allocation;
import android.renderscript.Element;
import android.renderscript.RenderScript;
import android.renderscript.ScriptIntrinsicBlur;

/**
 * Created by fabio on 30/03/16.
 */
public class ImageUtils {

    public static final int COMPRESSION_QUALITY = 85;

    @TargetApi(18)
    public static Bitmap blurRenderScript(Context ctx, Bitmap smallBitmap, int radius) {

        try {
            smallBitmap = RGB565toARGB888(smallBitmap);
        } catch (Exception e) {
            e.printStackTrace();
        }

        Bitmap bitmap = Bitmap.createBitmap(
                smallBitmap.getWidth(), smallBitmap.getHeight(),
                Bitmap.Config.ARGB_8888);

        RenderScript renderScript = RenderScript.create(ctx);

        Allocation blurInput = Allocation.createFromBitmap(renderScript, smallBitmap);
        Allocation blurOutput = Allocation.createFromBitmap(renderScript, bitmap);

        ScriptIntrinsicBlur blur = ScriptIntrinsicBlur.create(renderScript,
                Element.U8_4(renderScript));
        blur.setInput(blurInput);
        blur.setRadius(radius); // radius must be 0 < r <= 25
        blur.forEach(blurOutput);

        blurOutput.copyTo(bitmap);
        renderScript.destroy();

        return bitmap;
    }

    @TargetApi(18)
    private static Bitmap RGB565toARGB888(Bitmap img) throws Exception {
        int numPixels = img.getWidth() * img.getHeight();
        int[] pixels = new int[numPixels];

        //Get JPEG pixels.  Each int is the color values for one pixel.
        img.getPixels(pixels, 0, img.getWidth(), 0, 0, img.getWidth(), img.getHeight());

        //Create a Bitmap of the appropriate format.
        Bitmap result = Bitmap.createBitmap(img.getWidth(), img.getHeight(), Bitmap.Config.ARGB_8888);

        //Set RGB pixels.
        result.setPixels(pixels, 0, result.getWidth(), 0, 0, result.getWidth(), result.getHeight());
        return result;
    }

    /**
     * @param resource
     * @param context
     * @return
     */
    public static Drawable loadNinePatch(int resource, Context context) {
        Bitmap bitmap = BitmapFactory.decodeResource(context.getResources(), resource);
        byte[] chunk = bitmap.getNinePatchChunk();
        if (NinePatch.isNinePatchChunk(chunk)) {
            return new NinePatchDrawable(context.getResources(), bitmap, chunk, new Rect(), null);
        } else return new BitmapDrawable(bitmap);
    }

    /**
     * @param path
     * @param context
     * @return
     */
    public static Drawable loadNinePatch(String path, Context context) {
        Bitmap bitmap = BitmapFactory.decodeFile(path);
        byte[] chunk = bitmap.getNinePatchChunk();
        if (NinePatch.isNinePatchChunk(chunk)) {
            return new NinePatchDrawable(context.getResources(), bitmap, chunk, new Rect(), null);
        } else return new BitmapDrawable(bitmap);
    }
};