如何在Android studio中让图片中的特定颜色变得透明？

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Color;

public class ImageUtils {
    public static Bitmap makeColorTransparent(Bitmap bitmap, int targetColor) {
        int width = bitmap.getWidth();
        int height = bitmap.getHeight();
        Bitmap newBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);

        for (int i = 0; i < width; i++) {
            for (int j = 0; j < height; j++) {
                int pixel = bitmap.getPixel(i, j);
                if (pixel == targetColor) {
                    newBitmap.setPixel(i, j, Color.TRANSPARENT);
                } else {
                    newBitmap.setPixel(i, j, pixel);
                }
            }
        }

        return newBitmap;
    }
}