使用Universal Image Loader在Android网格视图中滚动时重复图像

Question

我正在尝试使用以下代码在gridview上使用Universal Image Loader从Internet加载图像.

public View getView(int position, View converView, ViewGroup parent) {
        Log.v("Description", "Description is " + position);
        ViewHolder mVHolder;
        if (converView == null) {
            LayoutInflater vi = (LayoutInflater) conted.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            converView = vi.inflate(R.layout.customgrid, null);
            mVHolder = new ViewHolder();
            mVHolder.mImageView = (ImageView) converView
                    .findViewById(R.id.imgview);
            mVHolder.mTextView1 = (TextView) converView
                    .findViewById(R.id.textView1);
            mVHolder.mTextView2 = (TextView) converView
                    .findViewById(R.id.textView2);
            mVHolder.mTextView3 = (TextView) converView
                    .findViewById(R.id.textView3);

            converView.setTag(mVHolder);
        } else {
            mVHolder = (ViewHolder) converView.getTag();
        }
        // mVHolder.mImageView.setImageResource(mThumbIds[position]);
        // mVHolder.mImageView.setImageDrawable(LoadImageFromURL(
        // mThumbIds[position]));
        imageLoader.displayImage(mThumbIds[position],mVHolder.mImageView,options, animationListener);
        Log.v("Names",NAMES[position] + STATES[position] + CONSTITUENCY[position]);
        mVHolder.mTextView1.setText(NAMES[position]);
        mVHolder.mTextView2.setText(STATES[position]);
        mVHolder.mTextView3.setText(CONSTITUENCY[position]);
        return converView;
    }

但是,当我在列表中向下滚动时,第一行的第一个图像似乎在大多数网格中重复.它不会一直停留 - 它会在一段时间后变回原始图像.我的问题是,这是一个关于通用图像加载器的视图通胀或通用图像加载器的图像加载的问题吗？

Answer 1

我认为你的问题是你没有像这样设置resetViewBeforeLoading()方法DisplayImageOptions: -

     DisplayImageOptions options = new DisplayImageOptions.Builder()
    .showStubImage(R.drawable.stub_image)
    .showImageForEmptyUri(R.drawable.image_for_empty_url)
 ---->   .resetViewBeforeLoading(true)<----very important for recycling views
    .cacheInMemory()
    .cacheOnDisc()
    .imageScaleType(ImageScaleType.IN_SAMPLE_POWER_OF_2) // default
    .bitmapConfig(Bitmap.Config.ARGB_8888) // default
    .delayBeforeLoading(1000)
    .displayer(new SimpleBitmapDisplayer()) // default
    .build();

然后应用此DisplayImageOptions.

        imageLoader.displayImage(mThumbIds[position],mVHolder.mImageView,options,                   animationListener);