android glide圆形图片加载一团黑

public class GlideCircleTransform extends BitmapTransformation {
public GlideCircleTransform(Context context) {
super(context);
}

@Override
protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {
    return circleCrop(pool, toTransform);
}

private Bitmap circleCrop(BitmapPool pool, Bitmap toTransform) {
    if (toTransform == null) return null;
    int size = Math.min(toTransform.getWidth(), toTransform.getHeight());
    int x = (toTransform.getWidth() - size) / 2;
    int y = (toTransform.getHeight() - size) / 2;

    // TODO this could be acquired from the pool too
    Bitmap squared = Bitmap.createBitmap(toTransform, x, y, size, size);

    Bitmap result = pool.get(size, size, Bitmap.Config.ARGB_8888);
    if (result == null) {
        result = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
    }

    Canvas canvas = new Canvas(result);
    Paint paint = new Paint();
    paint.setShader(new BitmapShader(squared, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP));
    paint.setAntiAlias(true);
    float r = size / 2f;
    canvas.drawCircle(r, r, r, paint);
    return result;
}

@Override
public String getId() {
    return getClass().getName();
}

}

网上都是这一个方法转换成圆形 我也是这么用 Glide.with()....加载网络的几张图片 后面几张正常了 前面好几张就是一团黑 要么是一团灰

http://blog.csdn.net/u010694658/article/details/53539486

我被坑了好久，原来Glide加载图片的ImageView不能设置tag