Android(安卓)微信分享icon黑边代码解决

由于Android的 icon 四周圆角裁剪时为透明所以在分享到微信和QQ好友中呈现黑边。

代码解决办法

    Bitmap bmp = BitmapFactory.decodeResource(instance.getResources(),R.drawable.icon);    UMImage img = new UMImage(m_Context, changeColor(bmp));    //bitmap中的透明色用白色替换    public static Bitmap changeColor(Bitmap bitmap) {        if (bitmap == null) {            return null;        }        int w = bitmap.getWidth();        int h = bitmap.getHeight();        int[] colorArray = new int[w * h];        int n = 0;        for (int i = 0; i < h; i++) {            for (int j = 0; j < w; j++) {                int color = getMixtureWhite(bitmap.getPixel(j, i));                colorArray[n++] = color;            }        }        return Bitmap.createBitmap(colorArray, w, h, Bitmap.Config.ARGB_8888);    }    //获取和白色混合颜色     private static int getMixtureWhite(int color) {        int alpha = Color.alpha(color);        int red = Color.red(color);        int green = Color.green(color);        int blue = Color.blue(color);        return Color.rgb(getSingleMixtureWhite(red, alpha), getSingleMixtureWhite(green, alpha),                getSingleMixtureWhite(blue, alpha));    }    // 获取单色的混合值     private static int getSingleMixtureWhite(int color, int alpha) {        int newColor = color * alpha / 255 + 255 - alpha;        return newColor > 255 ? 255 : newColor;    }

代码解决办法

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