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在我的应用程序中，我从MySQL服务器数据库中获取所有图像和名称到 Android 手机。如果模拟器屏幕是HVGA，则只显示五个图像和名称。在logcat中也只有五个名字被打印出来。当我滚动屏幕时，我可以在屏幕上看到多少个名字，只有打印出多少个名字。取而代之的是，所有名称都必须在滚动之前打印出来。

这是我的 Java 代码：

public class VegdishesListview extends BaseAdapter {
    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 VegdishesListview(Context context, JSONArray imageArrayJson) {
        //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(final int position, View convertView, ViewGroup parent) {
        View vi=convertView;
        vi = inflater.inflate(R.layout.vegdisheslistview, null);

        TextView text=(TextView)vi.findViewById(R.id.vegdishestext);
        ImageView image=(ImageView)vi.findViewById(R.id.vegdishesimage);
        TextView text1=(TextView)vi.findViewById(R.id.vegdishesprice);
        TextView text2=(TextView)vi.findViewById(R.id.vegdishesdesc);
        image.setImageBitmap(bmps[position]);
        text.setText(itemnames[position]);
        text1.setText(prices[position]);
        text2.setText(descs[position]);
        System.out.println(itemnames[position]);

        return vi;
    }

当我滚动时意味着有多少项目名称可以查看我可以在这里打印的多少项目。如何打印所有项目名称而不是滚动？

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1 回答 1

0

由于您实际上将名称存储为适配器类的成员字段，因此您可以在构造函数中打印它们，只需遍历数组即可。

于 2012-04-21T11:24:39.967 回答