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我正在从服务器数据库中获取项目名称、项目图像、价格和 desc 到自定义 lisview 中的 android 手机。我在自定义列表视图中放置了复选框。我在自定义列表视图中选择了一些项目。现在我想将那些选定的项目图像显示到另一个页面..请给出解决方案

             i try this code

            public class test extends BaseAdapter {
public Context Context;
  String qrimage;
  Bitmap bmp, resizedbitmap;
  Bitmap[] bmps;
  Activity activity = null;
  private LayoutInflater inflater;

  private ImageView[] mImages;
  String[] itemimage;
  TextView[] tv;  
  String itemname,price,desc;
  String[] itemnames;
  String[] prices;
  String[] descs;
  HashMap<String, String> map = new HashMap<String, String>();

  public Appetizerlist(Context context, JSONArray imageArrayJson) {
      Context=context;
    //inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    //  imageLoader=new ImageLoader(activity);
    inflater=LayoutInflater.from(context);
    this.mImages = new ImageView[imageArrayJson.length()];
    this.bmps = new Bitmap[imageArrayJson.length()];
    this.itemnames = new String[imageArrayJson.length()];
    this.prices=new String[imageArrayJson.length()];
    this.descs=new String[imageArrayJson.length()];
    try {

      for (int i = 0; i < imageArrayJson.length(); i++) {
        JSONObject image = imageArrayJson.getJSONObject(i);
        qrimage = image.getString("itemimage");
        itemname = image.getString("itemname");
        price=image.getString("price");
        desc=image.getString("itemdesc");

        itemnames[i] = itemname;
        prices[i]=price;
       descs[i]=desc;


        byte[] qrimageBytes = Base64.decode(qrimage.getBytes());

        bmp = BitmapFactory.decodeByteArray(qrimageBytes, 0,
                                            qrimageBytes.length);
        int width = 100;
        int height = 100;
        resizedbitmap = Bitmap.createScaledBitmap(bmp, width, height,
                                                  true);
        bmps[i] = bmp;

        mImages[i] = new ImageView(context);
        mImages[i].setImageBitmap(resizedbitmap);

        mImages[i].setScaleType(ImageView.ScaleType.FIT_START);


        // tv[i].setText(itemname);
      }
      System.out.println(map);

    } catch (Exception e) {
      // TODO: handle exception
    }
  }

  public int getCount() {
    return mImages.length;
  }

  public Object getItem(int position) {
    return position;
  }

  public long getItemId(int position) {
    return position;
  }




  public View getView(int position, View convertView, ViewGroup parent) {
        View view = convertView;
        final ViewHolder viewHolder;
        if (view == null) {         
              view = inflater.inflate(R.layout.appetiserlistview, null);
            viewHolder = new ViewHolder();
            viewHolder.image=(ImageView)view.findViewById(R.id.appetiserimage);
            viewHolder.text = (TextView) view.findViewById(R.id.appetisertext);
            viewHolder.desc=(TextView)view.findViewById(R.id.appetiserdesc);
            viewHolder.price=(TextView)view.findViewById(R.id.appetiserdesc);
            viewHolder.checkbox = (CheckBox) view.findViewById(R.id.bcheck);


            view.setTag(viewHolder);
        } else {
            viewHolder = (ViewHolder) view.getTag();
        }
        viewHolder.image.setImageBitmap(bmps[position]);

        viewHolder.price.setText(prices[position]);
        viewHolder.desc.setText(descs[position]);
        viewHolder.checkbox.setTag(itemnames[position]);
        ViewHolder holder = (ViewHolder) view.getTag();
        holder.text.setText(itemnames[position]);

        return view;
    }

    static class ViewHolder {
    protected TextView text,price,desc;
    protected ImageView image;
    protected CheckBox checkbox;
}



}

我想将所选项目图像显示到下一页..请帮帮我

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1 回答 1

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you can use OnItemClickListener() to pass this image String qrimage = image.getString("itemimage"); to your new Activity using intent.putExtra("qrimage",qrimage); and Decode this string in your New Activity as you have done this in your ListView.

If there is an array of images use ArrayList to store every image and pass the arrayList to intent using intent.putStringArrayListExtra("arrImages", bmps); and get it in another Activity using 

Intent i = getIntent();  
arrImages = i.getStringArrayListExtra("arrImages");

Hope it Helps.

于 2012-04-28T11:32:36.947 回答