Android Bitmap不会刷新

Question

我需要为视图的不同百分比值（CircleDisplay）创建X个位图。我总是得到相同的BitMap。如何正确地将不同的视图加载到我的listBitmap？

for(Goal g: goals) {

    ...

    Float percentageValue = (lastTrackDone.getDay_amount()/lastTrack.getDay_forecast()) * 100;

    //get goal circle image
    cd= (CircleDisplay) parentView.findViewById(R.id.circleDisplay);


    cd.setColor(Color.GREEN);
    cd.showValue(percentageValue, 100f, true);

    cd.getViewTreeObserver().addOnGlobalLayoutListener(
            new ViewTreeObserver.OnGlobalLayoutListener() {

                @Override
                public void onGlobalLayout() {

                    Bitmap bitmap = getBitmapFromView(cd);
                    listBitmap.add(bitmap);


                    loadCounter++;

                    if (numberGoals == loadCounter) {

                        cd.setVisibility(View.INVISIBLE);
                        cd.getViewTreeObserver()
                                .removeOnGlobalLayoutListener(this);
                        loadGoalsList();
                    }


                }
            });


    cd.destroyDrawingCache();
    cd.setDrawingCacheEnabled(false);

}

最好的问候