[移动开发]Android 安卓超级简单 修改图片RGB颜色，实现图片冷暖色变化

超级简单的图片冷暖色、灰度、高亮图片实现效果

第一种实现方式：

只需要传进rgb?对应的值，就可以修改图片颜色

public void imagec(int r, int g, int b) {

        Bitmap bitmap= BitmapFactory.decodeResource(getResources(), R.mipmap.a11);
        ColorMatrix colorMatrix=new ColorMatrix(new float[]{
                1,0,0,0,r*10,
                0,1,0,0,g*10,
                0,0,1,0,b*10,
                0,0,0,1,0});
        ColorMatrixColorFilter colorMatrixColorFilter=new ColorMatrixColorFilter(colorMatrix);
        Bitmap newBitmap=Bitmap.createBitmap(bitmap.getWidth(),bitmap.getHeight(), Bitmap.Config.ARGB_8888);
        Canvas canvas=new Canvas(newBitmap);
        Paint paint=new Paint();
        paint.setColorFilter(colorMatrixColorFilter);
        canvas.drawBitmap(bitmap,0,0,paint);
        imageView.setImageBitmap(newBitmap);
    }

第二种实现方式

只需要传进图片bitmap?就可以修改图片颜色

public  Bitmap handleImageNegative(Bitmap bm) {
        int width = bm.getWidth();
        int height = bm.getHeight();
        int color;
        int r, g, b, a;

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

        int[] oldPx = new int[width * height];
        int[] newPx = new int[width * height];
        bm.getPixels(oldPx, 0, width, 0, 0, width, height);

        for (int i = 0; i < width * height; i++) {
            color = oldPx[i];
            r = Color.red(color);
            g = Color.green(color);
            b = Color.blue(color);
            a = Color.alpha(color);
            //
            r = 255 - r;
            g = 255 - g;
            b = 255 - b;

            if (r > 255) {
                r = 255;
            } else if (r < 0) {
                r = 0;
            }
            if (g > 255) {
                g = 255;
            } else if (g < 0) {
                g = 0;
            }
            if (b > 255) {
                b = 255;
            } else if (b < 0) {
                b = 0;
            }
            newPx[i] = Color.argb(a, r, g, b);
        }
        bmp.setPixels(newPx, 0, width, 0, 0, width, height);
        return bmp;
    }