Question

我使用毕加索：

Picasso.with(mContext)
                .load(url)
                .placeholder(fallback)
                .error(fallback)
                .transform(new CircleTransform(userStatus))
                .into(this);

转换以将笔画和圆度应用于图像：

public class CircleTransform implements Transformation {
        private int userStatus = UserProfile.STATUS_TYPE_NONE;

        public CircleTransform(int userStatus) {
            this.userStatus = userStatus;
        }

        @Override
        public Bitmap transform(Bitmap source) {
            int size = Math.min(source.getWidth(), source.getHeight());

            int x = (source.getWidth() - size) / 2;
            int y = (source.getHeight() - size) / 2;

            Bitmap squaredBitmap = Bitmap.createBitmap(source, x, y, size, size);
            if (squaredBitmap != source) {
                source.recycle();
            }

            Bitmap bitmap = Bitmap.createBitmap(size, size, source.getConfig());

            Canvas canvas = new Canvas(bitmap);
            Paint paint = new Paint();
            BitmapShader shader = new BitmapShader(squaredBitmap, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP);
            paint.setShader(shader);
            paint.setAntiAlias(true);

            float r = size / 2f;
            canvas.drawCircle(r, r, r, paint);
            if (UserProfile.STATUS_TYPE_NONE != userStatus) {
                Paint paintStroke = new Paint();
                paintStroke.setAntiAlias(true);
                if (UserProfile.STATUS_TYPE_BRONZE == userStatus)
                    paintStroke.setColor(Colors.bronzeColor);
                else if (UserProfile.STATUS_TYPE_SILVER == userStatus)
                    paintStroke.setColor(Colors.silverColor);
                else if (UserProfile.STATUS_TYPE_GOLD == userStatus)
                    paintStroke.setColor(Colors.goldColor);
                else if (UserProfile.STATUS_TYPE_PLATINUM == userStatus)
                    paintStroke.setColor(Colors.platinumColor);
                else if (UserProfile.STATUS_TYPE_DIAMOND == userStatus)
                    paintStroke.setColor(Colors.diamondColor);

                paintStroke.setStyle(Paint.Style.STROKE);
                float stroke = size * CIRCLE_SIZE_IN_PERCENT;
                paintStroke.setStrokeWidth(stroke);
                canvas.drawCircle(r, r, r - (stroke / 2), paintStroke);
            }
            squaredBitmap.recycle();
            return bitmap;
        }

        @Override
        public String key() {
            return "circle";
        }
    }

问题是每次加载图像时都不会调用公共Bitmap transform(Bitmap source)。

Answer 1

userStatus变量会更改转换的行为，因此必须包含在缓存键中。毕竟，毕加索认为任何圆形变换都可以被另一个变换。

@Override
public String key() {
    return "circle" + userStatus;
}

Answer 2

好的我找到了解决方案，转换键保持不变，并且它不会应用具有相同键的新键，所以我改变了

 @Override
        public String key() {
            return "circle";
        }

到：

@Override
        public String key() {
            return "circle" + value;
        }

value - 应该是定义ImageView实例的唯一参数。我希望它可以帮助别人:)

Android Picasso转换未应用于每个视图节目

2 个答案: