Question

I have a screen which call a listfield.

public class Main_AllLatestNews extends MainScreen {
private Database_Webservice webservice;
private String[] title, category, date, imagepath = {"no picture", "no picture", "no picture", "no picture","no picture","no picture","no picture","no picture","no picture", "no picture"};
private int[] newsid;
private List_News newslist;

public Main_AllLatestNews(final boolean needdownload) {
    super(USE_ALL_WIDTH);
    webservice = new Database_Webservice();
    add(new Custom_TopField(this, 0, -1, "", 1, 1));
    add(new Custom_BottomField(this, 0));
    add(new Custom_HeaderField(Config_GlobalFunction.latest));
    if (needdownload){
        Main.getUiApplication().pushScreen(
                new Custom_LoadingScreen(30));
        webservice.UpdateAllCatNews();          
    }else {
        webservice.LoadtodayNews(); 
        newsid = new int[webservice.news.size()];
        title = new String[webservice.news.size()];
        category = new String[webservice.news.size()];
        date = new String[webservice.news.size()];
        //imagepath = new String[webservice.news.size()];

        for (int i = 0; i < webservice.news.size(); i++) {
            newslist = (List_News) webservice.news.elementAt(i);
            newsid[i] = newslist.getID();
            title[i] = newslist.getNtitle();
            category[i] = newslist.getNewCatName();
            date[i] = newslist.getNArticalD();
            //imagepath[i] = newslist.getImagePath();
        }
        add(new Custom_ListField(newsid, title, date, category, imagepath, true));
    }
}
}

When I add custom_listfield then I get:

Failed to allocate timer 0: no slots left

Here is my listfield

public Custom_ListField(int newsid[], String title[], String date[],
        String category[], String imagepath[], boolean islatest) {
    super(0, ListField.MULTI_SELECT);
    this.newsid = newsid;
    setCallback(this);
    setBackground(Config_GlobalFunction.loadbackground("background.png"));
    this.islatest = islatest;
    rows = new Vector();

    for (int x = 0; x < title.length; x++) {
        TableRowManager row = new TableRowManager();

        titlelabel = new Custom_LabelField(title[x],
                LabelField.USE_ALL_WIDTH | DrawStyle.LEFT);
        titlelabel.setFont(Font.getDefault().derive(Font.BOLD, 23));
        row.add(titlelabel);

        datelabel = new Custom_LabelField(date[x], DrawStyle.ELLIPSIS
                | LabelField.USE_ALL_WIDTH | DrawStyle.LEFT);
        datelabel.setFont(Font.getDefault().derive(Font.BOLD, 18));
        datelabel.setFontColor(Color.GRAY);
        row.add(datelabel);

        categorylabel = new Custom_LabelField(category[x],
                DrawStyle.ELLIPSIS | LabelField.USE_ALL_WIDTH
                        | DrawStyle.LEFT);
        categorylabel.setFont(Font.getDefault().derive(Font.BOLD, 18));
        categorylabel.setFontColor(Color.RED);
        row.add(categorylabel);

        /*Bitmap imagebitmap = null;
        if (!imagepath[x].toString().equals("no picture")) {
            imagebitmap = Util_ImageLoader.loadImage(imagepath[x]);
        } else {
            imagepath[x] = "image_base.png";
            imagebitmap = Bitmap.getBitmapResource(imagepath[x]);
        }
        image = new BitmapField(imagebitmap, Field.FIELD_HCENTER
                | Field.FIELD_VCENTER);
        row.add(image);*/

        //setRowHeight(image.getBitmapHeight() + 10);
        setRowHeight(70);
        rows.addElement(row);
    }
    setSize(rows.size());
}

In this list, it will call 10 images or more. First I will check got link send to it else load local images. So the row height must be not same, however, it does not auto set row height for each row but set a same height to all row. I think out of memory because i call too many images? but I call in android also no problem.

This is my imageloader.

public class Util_ImageLoader {

public static Bitmap loadImage(String url) {
    HttpConnection connection = null;
    InputStream inputStream = null;
    EncodedImage bitmap;
    byte[] dataArray = null;

    try {
        // can use this for BlackBerry 5.0+ :
        // connection = (HttpConnection) (new
        // ConnectionFactory()).getConnection(url).getConnection();
        connection = (HttpConnection) Connector
                .open(url + Util_GetInternet.getConnParam(),
                        Connector.READ, true);
        int responseCode = connection.getResponseCode();
        if (responseCode == HttpConnection.HTTP_OK) {
            inputStream = connection.openDataInputStream();
            dataArray = IOUtilities.streamToBytes(inputStream);
        }
    } catch (Exception ex) {
    } finally {
        try {
            inputStream.close();
            connection.close();
        } catch (Exception e) {
        }
    }

    if (dataArray != null) {
        bitmap = EncodedImage.createEncodedImage(dataArray, 0,
                dataArray.length);
        return bitmap.getBitmap();
    } else {
        return null;
    }
}
}

1) What can I do to reduce the use of memory?

2) How to set different row height? I am set bitmap.getbitmapheight() but different bitmap will have different height.

//Updated//

I am running on simulator 9930 OS 7.0 and 8520 OS 5.0. Both also same result. Real Device cannot run because after signing the key also prompt the warning message try to Secure APi. I am completely commented all the images also same. I did not call neither online nor local image. I think is the data problem?

@AlanLai, can you tell us which device this is being run on, and which OS? Is it a simulator, or real hardware? Why don’t you try commenting out the image completely. Don’t show any images (network images, or local images). See if you still get the problem. Let’s try to narrow down where exactly the code is that’s causing your problem. Note: please post the information about which device you’re testing on above, in the question, not as a comment response here. Thanks

Answer 1

The problem was the Custom_ListField. This should extends listfield
instead of custom extends manager

public class Custom_ListField extends ListField {
private String[] title, category, date, imagepath;
private int[] newsid, catsid;
private List_News newslist;
private Bitmap imagebitmap[], localimage = Bitmap
        .getBitmapResource("image_base.png");
private BrowserField webpage;
private Custom_BrowserFieldListener listener;
private boolean islatest;

private Vector content = null;
private ListCallback callback = null;

private int currentPosition = 0;

public Custom_ListField(Vector content, boolean islatest) {
    this.content = content;
    this.islatest = islatest;
    newsid = new int[content.size()];
    title = new String[content.size()];
    category = new String[content.size()];
    date = new String[content.size()];
    imagepath = new String[content.size()];
    catsid = new int[content.size()];
    imagebitmap = new Bitmap[content.size()];

    for (int i = 0; i < content.size(); i++) {
        newslist = (List_News) content.elementAt(i);
        newsid[i] = newslist.getID();
        title[i] = newslist.getNtitle();
        category[i] = newslist.getNewCatName();
        date[i] = newslist.getNArticalD();
        imagepath[i] = newslist.getImagePath();

        if (!imagepath[i].toString().equals("no picture")) {
            imagebitmap[i] = Util_ImageLoader.loadImage(imagepath[i]);
        } else {
            imagebitmap[i] = localimage;
        }
        catsid[i] = newslist.getCatID();
    }

    initCallbackListening();
    this.setRowHeight(localimage.getHeight() + 10);
}

private void initCallbackListening() {
    callback = new ListCallback();
    this.setCallback(callback);
}

private class ListCallback implements ListFieldCallback {

    public ListCallback() {
        setBackground(Config_GlobalFunction
                .loadbackground("background.png"));
    }

    public void drawListRow(ListField listField, Graphics graphics,
            int index, int y, int width) {
        currentPosition = index;
        graphics.drawBitmap(
                Display.getWidth() - imagebitmap[index].getWidth() - 5,
                y + 3, imagebitmap[index].getWidth(),
                imagebitmap[index].getHeight(), imagebitmap[index], 0, 0);
        graphics.setColor(Color.WHITE);
        graphics.drawRect(0, y, width, imagebitmap[index].getHeight() + 10);



        graphics.setColor(Color.BLACK);
        graphics.setFont(Font.getDefault().derive(Font.BOLD, 20));
        graphics.drawText(title[index], 5, y + 3, 0, Display.getWidth()
                - imagebitmap[index].getWidth() - 10);

        System.out.println(Display.getWidth()
                - imagebitmap[index].getWidth() - 10);

        graphics.setColor(Color.GRAY);
        graphics.setFont(Font.getDefault().derive(Font.BOLD, 15));
        graphics.drawText(date[index], 5, y + 6
                + Font.getDefault().getHeight() + 3);

        if (islatest) {
            graphics.setColor(Color.RED);
            graphics.setFont(Font.getDefault().derive(Font.BOLD, 15));
            graphics.drawText(category[index], Font.getDefault()
                    .getAdvance(date[index]) + 3, y + 6
                    + Font.getDefault().getHeight() + 3);
        }
    }

    public Object get(ListField listField, int index) {
        return content.elementAt(index);
    }

    public int getPreferredWidth(ListField listField) {
        return Display.getWidth();
    }

    public int indexOfList(ListField listField, String prefix, int start) {
        return content.indexOf(prefix, start);
    }
}

public int getCurrentPosition() {
    return currentPosition;
}

protected boolean navigationClick(int status, int time) {
    int index = getCurrentPosition();
    if (catsid[index] == 9) {
        if (Config_GlobalFunction.isConnected()) {
            webpage = new BrowserField();
            listener = new Custom_BrowserFieldListener();
            webpage.addListener(listener);

            MainScreen aboutus = new Menu_Aboutus();
            aboutus.add(webpage);
            Main.getUiApplication().pushScreen(aboutus);

            webpage.requestContent("http://www.orientaldaily.com.my/index.php?option=com_k2&view=item&id="
                    + newsid[index] + ":&Itemid=223");
        } else
            Config_GlobalFunction.Message(Config_GlobalFunction.nowifi, 1);
    } else
        Main.getUiApplication().pushScreen(
                new Main_NewsDetail(newsid[index]));
    return true;
}
}