李代桃僵-列表里横竖展示图片动态调整高宽因复用引起的错位问题

 <RelativeLayout
            android:id="@+id/rl_pic"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignLeft="@id/view_top"
            android:layout_below="@id/item_taskstatus_title"
            >
            <FrameLayout
                android:id="@+id/fl_image"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:visibility="gone" />
            <android.support.v7.widget.RecyclerView
                android:id="@+id/rv_pic"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:visibility="gone"
                />
        </RelativeLayout>

 //单图、多图显示

            final ArrayList<String> imageSourceList = new ArrayList<>();
            List<PictureBean> picture = taskStatusBeans.get(groupPosition).getSource_list();
            for (int index = 0; index < picture.size(); index++) {
                PictureBean pictureBean = picture.get(index);
                String url = CommonUtils.changeHeaderUrl(pictureBean.getPicid(), app.getTokenBean().getAccessToken(), "img",
                        String.valueOf((int) (app.getWidthPixels() * 0.36f)),
                        String.valueOf((int) (app.getWidthPixels() * 0.36f)));
                imageSourceList.add(url);
            }

            if (imageSourceList.size() > 1) {
                InfoPicAdapter personAdapter = new InfoPicAdapter(context,imageSourceList,imageLoaderUtil);
                    holder.rv_pic.setLayoutManager(new GridLayoutManager(context,3));
                holder.rv_pic.setAdapter(personAdapter);
                holder.rv_pic.setVisibility(View.VISIBLE);
                holder.fl_image.setVisibility(View.GONE);
            } else if(imageSourceList.size() > 0){
                holder.rv_pic.setVisibility(View.GONE);
                holder.fl_image.setVisibility(View.VISIBLE);
                PictureBean pictureBean = picture.get(0);
                if (TextUtils.isEmpty(pictureBean.getWidth()) || TextUtils.equals(pictureBean.getWidth(), "0") || TextUtils.isEmpty(pictureBean.getHeight()) || TextUtils.equals(pictureBean.getHeight(), "0")) {
                    //设置图片宽高
                    app.setMLayoutParam(holder.fl_image, 0.36f, 0.36f);
                } else {
                    int mw = Integer.parseInt(pictureBean.getWidth());
                    int mh = Integer.parseInt(pictureBean.getHeight());
                    int maxSize = (int) (app.getWidthPixels() * 0.36f);
                    if (mw > mh) {
                        //计算比例
                        BigDecimal proportion = new BigDecimal(maxSize).divide(new BigDecimal(mw), 3, BigDecimal.ROUND_HALF_UP);
                        //按照比例换算图片高度
                        float h = new BigDecimal(mh).multiply(proportion).divide(new BigDecimal(app.getWidthPixels()), 3, BigDecimal.ROUND_HALF_UP).floatValue();
                        //设置图片宽高
                        app.setMLayoutParam(holder.fl_image, 0.36f, h);
                    } else{
                        //计算比例
                        BigDecimal proportion = new BigDecimal(maxSize).divide(new BigDecimal(mh), 3, BigDecimal.ROUND_HALF_UP);
                        //按照比例换算图片高度
                        float w = new BigDecimal(mw).multiply(proportion).divide(new BigDecimal(app.getWidthPixels()), 3, BigDecimal.ROUND_HALF_UP).floatValue();
                        //设置图片宽高
                        app.setMLayoutParam(holder.fl_image, w, 0.36f);
                    }
                }
                ImageView iv = new ImageView(getMyActivity());
                iv.setScaleType(ImageView.ScaleType.CENTER_CROP);
                holder.fl_image.addView(iv);
                ImageLoader imageLoader1 = new ImageLoader.Builder()
                        .url(imageSourceList.get(0))
                        .imgView(iv)
                        .placeHolder(R.mipmap.ic_loading)
                        .errorHolder(R.mipmap.ic_load_fail)
                        .scaleType(1)
                        .build();
                imageLoaderUtil.loadImage(context, imageLoader1);
                holder.fl_image.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        Intent intent = new Intent(context, ZoomViewPagerActivity.class);
                        intent.putExtra("index", 0);
                        intent.putStringArrayListExtra("imageUrls", imageSourceList);
                        intent.putExtra("max", imageSourceList.size());
                        intent.putExtra("isShow", 1);
                        context.startActivity(intent);
                    }
                });
            }else {
                holder.rv_pic.setVisibility(View.GONE);
                holder.fl_image.setVisibility(View.GONE);
            }

复用布局，不复用iamgeview，用framelayout代替imageview的位置，动态添加imageview，这样就不会显示错乱了