將位圖圖像四舍五入為Google地圖標記圖標

Question

我有一個地圖活動 ，該活動從解析服務器中檢索圖像和位置並將它們顯示為地圖上的標記，我想知道是否可以使這些標記變圓而不是矩形。

這是我的代碼：

public void getimagesLocation(){

    ParseQuery<ParseObject> query = ParseQuery.getQuery("Image");
    ParseGeoPoint geoPointLocation = new ParseGeoPoint();
    query.whereNear("location", geoPointLocation);

    query.setLimit(100);
    query.findInBackground(new FindCallback<ParseObject>() {
        @Override
        public void done(List<ParseObject> objects, ParseException e) {
            if (e == null) {
                Log.i("imageslocation", "no errors");}
            if (objects.size() > 0) {
                for (ParseObject object : objects) {
                    final ParseGeoPoint point = object.getParseGeoPoint("location");
                    ParseFile file = (ParseFile) object.get("image");
                    file.getDataInBackground(new GetDataCallback() {
                        @Override
                        public void done(byte[] data, ParseException e) {
                            if (e == null && data != null);

                            Bitmap bitmap = BitmapFactory.decodeByteArray(data,0,data.length);
                            Bitmap thumbnail = ThumbnailUtils.extractThumbnail(bitmap,200,200);

                            Double lat = point.getLatitude();
                            Double log = point.getLongitude();

                            LatLng marker = new LatLng(lat, log);

                            mMap.addMarker(new MarkerOptions()
                                    .title("Another Image")
                                    .icon(BitmapDescriptorFactory.fromBitmap(thumbnail))
                                    .position(marker));

                        }});}}}});}

那么，如何使這些標記變圓而不是矩形呢？

Answer 1

我認為問題在於圖像資產。 您應該使用透明的* .png圖像格式 。

像這樣：

Answer 2

好吧，我找到了解決方案，這就是如果有人感興趣

 public Bitmap getCroppedBitmap(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());

    paint.setAntiAlias(true);
    canvas.drawARGB(0, 0, 0, 0);
    paint.setColor(color);
    canvas.drawCircle(bitmap.getWidth() / 2, bitmap.getHeight() / 2,
            bitmap.getWidth() / 2, paint);
    paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
    canvas.drawBitmap(bitmap, rect, rect, paint);

    return output;
}

然后像這樣簡單地提取縮略圖

Bitmap thumbnail = ThumbnailUtils.extractThumbnail(getCroppedBitmap(bitmap),200,200);