Question

我在自定义列表视图中从数据库中获取图像和文本。现在我可以单击文本意味着它导航另一个页面。现在我想listview的setonitemclicklistener依赖于它从一个页面导航到另一个页面的代码

            Main.jaga
           JSONArray json = jArray.getJSONArray("mainmenu");
        list=(ListView)findViewById(R.id.mainmenulist);
         adapter=new MainMenulist(this, json);
         list.setAdapter(adapter);
              MainMenulist.java
            public class MainMenulist extends BaseAdapter {
protected static Context Context = null;
int i;
public String editnewmainmenu,menuname;
String qrimage;
Bitmap bmp, resizedbitmap;
Bitmap[] bmps;
Activity activity = null;
private LayoutInflater inflater;

private ImageView[] mImages;
String[] itemimage;
TextView[] tv;
String itemname,itemcode;
public String[] itemnames,itemcodes;
HashMap<String, String> map = new HashMap<String, String>();

public MainMenulist(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.itemcodes=new String[imageArrayJson.length()];

    try {

        for (i = 0; i < imageArrayJson.length(); i++) {
            JSONObject image = imageArrayJson.getJSONObject(i);
            qrimage = image.getString("menuimage");
            itemname = image.getString("menuname");
            itemcode=image.getString("menucode");
            itemnames[i] = itemname;
            itemcodes[i]=itemcode;

            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(itemnames[i]);
        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.mainmenulistview, null);

final   TextView text = (TextView) vi.findViewById(R.id.menutext);
    ImageView image = (ImageView) vi.findViewById(R.id.menuimage);

    System.out.println(itemcodes[position]);
    image.setImageBitmap(bmps[position]);

    text.setText(itemnames[position]);
    text.setOnClickListener(new OnClickListener() {

        public void onClick(View v) {
            // TODO Auto-generated method stub
            if(itemcodes[position].equals("1"))
            {
                Intent intent = new Intent(Context, FoodMenu.class);
                System.out.println("prakash");

                Context.startActivity(intent);
            }
            else {
                Toast.makeText(Context, "This Feauture is not yet Implemented",4000).show();
            }

        }
    });       

    return vi;

}

   }

请告诉我如何将setonitemclick监听器提供给我的listview。取决于项目，它导航不同的页面..请帮助我

Answer 1

listView.setOnItemClickListener(new OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> adapter, View view,int pos, long id) 
    {
        if(pos == 1)
         startActivity(intent);
    }
}

主活动类（Main.java）中的

不在适配器类

如何从android中的mysql数据库中提供自定义列表的setOnItemClickListener

1 个答案: