Android Drawable 颜色转换

方法

 public static final class TintedBitmapDrawable extends BitmapDrawable {
        private int tint;
        private int alpha;

        public TintedBitmapDrawable(final Resources res, final Bitmap bitmap, final int tint) {
            super(res, bitmap);
            this.tint = tint;
            this.alpha = Color.alpha(tint);
        }

        public TintedBitmapDrawable(final Resources res, final int resId, final int tint) {
            super(res, BitmapFactory.decodeResource(res, resId));
            this.tint = tint;
            this.alpha = Color.alpha(tint);
        }

        public void setTint(final int tint) {
            this.tint = tint;
            this.alpha = Color.alpha(tint);
        }

        @Override
        public void draw(final Canvas canvas) {
            final Paint paint = getPaint();
            if (paint.getColorFilter() == null) {
                paint.setColorFilter(new LightingColorFilter(tint, 0));
                paint.setAlpha(alpha);
            }
            super.draw(canvas);

        }

    }

使用

BitmapDrawable drawable = new TintedBitmapDrawable(getResources(), R.mipmap.warning3, Color.parseColor("#fa3030"));
img.setImageDrawable(drawable);