Display a bitmap in image view with a simple adapter

Question

Display a bitmap in image view with a simple adapter

I get the image from the url. I am using viewview in listview. I want to add a list of bitmaps to each line of a list item. I used the SimpleAdapter, but the image is not displayed. My code is below!

 ArrayList<HashMap<String, Bitmap>> mylist = new ArrayList<HashMap<String, Bitmap>>();

    Bundle bundle = this.getIntent().getExtras();
     get = bundle.getString("name");

     try{
            HttpClient httpclient = new DefaultHttpClient();
            HttpPost httppost = new HttpPost("http://www.propertyhookup.com/mobile/propertylist.php");
            nameValuePairs = new ArrayList<NameValuePair>(1);
            nameValuePairs.add(new BasicNameValuePair("zipcode", get.trim()));
            httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
            HttpResponse response = httpclient.execute(httppost);
            HttpEntity entity = response.getEntity();
            is = entity.getContent();

    }catch(Exception e){
            Toast.makeText(getApplicationContext(), e.getMessage(), Toast.LENGTH_LONG).show();
    }

  //convert response to string
    try{
            BufferedReader reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8);
            StringBuilder sb = new StringBuilder();
            String line = null;
            while ((line = reader.readLine()) != null) {
                    sb.append(line + "\n");
            }
            is.close();
            result=sb.toString();
    }catch(Exception e){
            Toast.makeText(getApplicationContext(), e.getMessage(), Toast.LENGTH_LONG).show();
    }
    if(result.length()<= 7){
        Toast.makeText(getApplicationContext(), "No properties for this zipcode or check your zipcode ", Toast.LENGTH_LONG).show();
        //text.setText("No properties for this zipcode or check your zipcode");
    }
    else{
    try{

     jArray = new JSONObject(result);            
    }catch(JSONException e){
        Toast.makeText(getApplicationContext(), e.getMessage(), Toast.LENGTH_LONG).show();
    }

    //JSONObject json = JSONfunctions.getJSONfromURL("http://192.168.1.111/propertyhookup.com/mobile/propertylist.php");

    try{

        JSONArray  earthquakes = jArray.getJSONArray("earthquakes");

        for(int i=0;i<10;i++){                      
            map = new HashMap<String, Bitmap>();
            //HashMap<String, Drawable> map1 = new HashMap<String, Drawable>();

            JSONObject e = earthquakes.getJSONObject(i);



            if(e.getString("property_type").contains("1")) {
                proptype ="Single Family Home";
            }else if(e.getString("property_type").contains("2")) {
                proptype="Condo";
            }else if(e.getString("property_type").contains("3")) {
                proptype="Townhouse";
            }
            if(e.getString("estimated_price").contains("0")) {
                estimate = "Not Enough Market Value";
                //estimat = (TextView) findViewById(R.id.estimat);
                //estimat.setTextColor(Color.rgb(0, 0, 23));
            }else {
                estimate = "$"+e.getString("estimated_price");
            }

            photo = e.getString("photo1");

            drawable = LoadImageFromWebOperations(photo);

            //text.setImageDrawable(d);

            try
            {
                    aURL = new URL(photo);
            }
            catch (MalformedURLException e1)
            {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
            }
            URLConnection conn = null;
            try
            {
                    conn = aURL.openConnection();
            }
            catch (IOException e1)
            {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
            }
            try
            {
                    conn.connect();
            }
            catch (IOException e1)
            {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
            }
            InputStream is = null;
            try
            {
                    is = conn.getInputStream();
            }
            catch (IOException e1)
            {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
            }
            BufferedInputStream bis = new
    BufferedInputStream(is,8*1024);
            Bitmap bm = BitmapFactory.decodeStream(bis);

            map.put(photos, bm);
            mylist.add(map);


        }       
    }catch(JSONException e)        {
        Toast.makeText(getApplicationContext(),e.getMessage(), Toast.LENGTH_LONG).show();
    }



    SimpleAdapter adapter = new SimpleAdapter(this, mylist , R.layout.main4, 
                   new String[] { "percent","propertyid",  "cityname", "statecode", "propertytype", "footage", "bathroom", "bedroom", "price", "estimated", "photos" }, 
                   new int[] { R.id.percent, R.id.property_id,  R.id.city_name, R.id.state_code, R.id.prop_type, R.id.foot, R.id.bath, R.id.bed, R.id.list, R.id.estimat, R.id.image});
    setListAdapter(adapter);

+3

android listview imageview simpleadapter

Santhosh_pulliman Jun 13 '11 at 7:02

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3 answers

ressource URI . Bitmap.

, , , , , outOfMemory. listView, , URI. , :

simpleAdapter, bitmap. simpleAdapter. URI ressourceId Bitmap!

:

import java.util.HashMap;
import java.util.List;
import java.util.Map;

import android.content.Context;
import android.graphics.Bitmap;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Checkable;
import android.widget.ImageView;
import android.widget.SimpleAdapter;
import android.widget.TextView;



public class ExtendedSimpleAdapter extends SimpleAdapter{
    List<? extends Map<String, ?>> map; // if fails to compile, replace with List<HashMap<String, Object>> map
    String[] from;
    int layout;
    int[] to;
    Context context;
    LayoutInflater mInflater;
    public ExtendedSimpleAdapter(Context context, List<? extends Map<String, ?>> data, // if fails to compile, do the same replacement as above on this line
            int resource, String[] from, int[] to) { 
        super(context, data, resource, from, to);
        layout = resource;
        map = data;
        this.from = from;
        this.to = to;
        this.context = context;
    }


@Override
public View getView(int position, View convertView, ViewGroup parent) {
    mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    return this.createViewFromResource(position, convertView, parent, layout);
}

private View createViewFromResource(int position, View convertView,
        ViewGroup parent, int resource) {
    View v;
    if (convertView == null) {
        v = mInflater.inflate(resource, parent, false);
    } else {
        v = convertView;
    }

    this.bindView(position, v);

    return v;
}


private void bindView(int position, View view) {
    final Map dataSet = map.get(position);
    if (dataSet == null) {
        return;
    }

    final ViewBinder binder = super.getViewBinder();
    final int count = to.length;

    for (int i = 0; i < count; i++) {
        final View v = view.findViewById(to[i]);
        if (v != null) {
            final Object data = dataSet.get(from[i]);
            String text = data == null ? "" : data.toString();
            if (text == null) {
                text = "";
            }

            boolean bound = false;
            if (binder != null) {
                bound = binder.setViewValue(v, data, text);
            }

            if (!bound) {
                if (v instanceof Checkable) {
                    if (data instanceof Boolean) {
                        ((Checkable) v).setChecked((Boolean) data);
                    } else if (v instanceof TextView) {
                        // Note: keep the instanceof TextView check at the bottom of these
                        // ifs since a lot of views are TextViews (e.g. CheckBoxes).
                        setViewText((TextView) v, text);
                    } else {
                        throw new IllegalStateException(v.getClass().getName() +
                                " should be bound to a Boolean, not a " +
                                (data == null ? "<unknown type>" : data.getClass()));
                    }
                } else if (v instanceof TextView) {
                    // Note: keep the instanceof TextView check at the bottom of these
                    // ifs since a lot of views are TextViews (e.g. CheckBoxes).
                    setViewText((TextView) v, text);
                } else if (v instanceof ImageView) {
                    if (data instanceof Integer) {
                        setViewImage((ImageView) v, (Integer) data);                            
                    } else if (data instanceof Bitmap){
                        setViewImage((ImageView) v, (Bitmap)data);
                    } else {
                        setViewImage((ImageView) v, text);
                    }
                } else {
                    throw new IllegalStateException(v.getClass().getName() + " is not a " +
                            " view that can be bounds by this SimpleAdapter");
                }
            }
        }
    }
}



private void setViewImage(ImageView v, Bitmap bmp){
    v.setImageBitmap(bmp);
}



}

(SimpleAdapter)

+11

pintaf 06 . '12 9:13

The best way to do this is to create a class that extends the BaseAdapter, and then initialize the async task for each image (when executed after execution, set the bitmap for the corresponding imageView). Here is a simple function to download images from the Internet:

private Bitmap loadImageFromNetwork(String url) throws MalformedURLException, IOException {
    HttpURLConnection conn = (HttpURLConnection) (new URL(url)).openConnection();
    conn.connect();
    return BitmapFactory.decodeStream(new FlushedInputStream(conn.getInputStream()));
}

+1

Tiago babo Jun 13 '11 at 9:35

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PedroAGsantos · Accepted Answer · 2011-06-13T07:40:17+0000

I think this is because you download the image from the Internet, and you need to do it in ASYNC to see the painless thrething download image and after that only update the images.

Display a bitmap in image view with a simple adapter

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