GridView BaseAdapter 求解解决思路_Android

GridView BaseAdapter 求解
我的一个GridView布局，用的是继承的BaseAdapter，现在的问题是每次我下拉GridView里面的每一行的图片都会变化，下面是我的basedapter主要代码，请高手帮忙看看。

Java code

    @Override    public View getView(int position, View convertView, ViewGroup parent) {        // TODO Auto-generated method stub        if (convertView == null) {            convertView = layoutInflater.inflate(R.layout.xin_fjshname, null);        }        TextView tv_name = (TextView) convertView.findViewById(R.id.tv_xin_fjshname);        LinearLayout ll_image = (LinearLayout) convertView.findViewById(R.id.ll_xin_fjshtp);        RatingBar rb_stars = (RatingBar) ll_image.findViewById(R.id.rb_xin_stars);        String name = list.get(position).get("name");        tv_name.setText(name);        float grade = Float.parseFloat(list.get(position).get("grade"));        Log.i(TAG, "grade:" + grade);        rb_stars.setRating(grade);        String imagePath = list.get(position).get("imgPath");        Log.i(TAG, "imagePath:" + imagePath);        if (!islocal) {            imagePath = context.getString(R.string.imageIp) + imagePath;            try {                Bitmap bitmap = BitmapFactory.decodeStream(new URL(imagePath).openConnection().getInputStream());                if (bitmap != null) {                    if (bitmap.getWidth() > 150 && bitmap.getHeight() > 150) {                        bitmap = tpcq(bitmap);                        BitmapDrawable drawable = new BitmapDrawable(bitmap);                        if (drawable != null) {                            ll_image.setBackgroundDrawable(drawable);                        }                    }                }            } catch (MalformedURLException e) {                e.printStackTrace();            } catch (IOException e) {                e.printStackTrace();            }        } else {            Bitmap bitmap = BitmapFactory.decodeFile(imagePath);            if (bitmap != null) {                if (bitmap.getWidth() > 150 && bitmap.getHeight() > 150) {                    bitmap = tpcq(bitmap);                    ll_image.setBackgroundDrawable(new BitmapDrawable(bitmap));                }            }        }        return convertView;    }

下面是裁图片的代码

Java code

    /**     * 如果图片宽高大于150,则转化为150     *      * @param bitmap     * @return     */    public Bitmap tpcq(Bitmap bitmap) {        int width = bitmap.getWidth();        int height = bitmap.getHeight();        int newWidht = 150;        int newHeight = 150;        float scaleWidth = ((float) newWidht) / width;        float scaleHeight = ((float) newHeight) / height;        Matrix matrix = new Matrix();        matrix.postScale(scaleWidth, scaleHeight);        Bitmap newBitmap = Bitmap.createBitmap(bitmap, 0, 0, width, height, matrix, true);        return newBitmap;    }

------解决方案--------------------
没有仔细看，不妨试一下ViewHolder类

Java code

    static class ViewHolder    {        TextView tv;        LinearLayout ll;        RatingBar rb;    }
------解决方案--------------------
我以前也遇到这个问题，后来弄个全局变量，把图片缓存进去，然后adapter每次都去缓存里拿图片
------解决方案--------------------
用到Memory缓存，磁盘缓存，SoftReference等
用下面这开源的项目吧
http://code.google.com/p/android-query/#Image_Loading