小賴的實戰記錄

可看以下這篇文章

http://stackoverflow.com/questions/23464707/display-fb-profile-pic-in-circular-image-view-in-application

 

主要是先將 Facebook  的 ProfilePictureView 複製一份到自己的app裡。

然後增加一個method

    public static Bitmap getRoundedBitmap(Bitmap bitmap) {
        Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap
                .getHeight(), Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(output);

        final int color = 0xff424242;
        final Paint paint = new Paint();
        final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
        final RectF rectF = new RectF(rect);

        paint.setAntiAlias(true);
        canvas.drawARGB(0, 0, 0, 0);
        paint.setColor(color);
        canvas.drawOval(rectF, paint);

        paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
        canvas.drawBitmap(bitmap, rect, rect, paint);

        return output;
    }

並且修改原有方法

    private void setImageBitmap(Bitmap imageBitmap) {
        if (image != null && imageBitmap != null) {
            imageContents = imageBitmap; // Hold for save-restore cycles
            image.setImageBitmap(ProfilePictureView.getRoundedBitmap(imageBitmap));
        }
    }