During the writing...

Hello

It's my code... here we touch, when we click on that image is displayed on the same screen... If I click this button again another image is happening below this picture... what I want is, when I click this button 2 times, I don't want another picture below... I want to replace this image.

import java.io.DataInputStream;

import javax.microedition.io.Connector;
import javax.microedition.io.file.FileConnection;

import net.rim.device.api.system.Bitmap;
import net.rim.device.api.ui.Field;
import net.rim.device.api.ui.FieldChangeListener;
import net.rim.device.api.ui.UiApplication;
import net.rim.device.api.ui.component.BitmapField;
import net.rim.device.api.ui.component.ButtonField;
import net.rim.device.api.ui.container.MainScreen;

public class ImageEx extends UiApplication
{
public static void main(String args[])
{
ImageEx ie=new ImageEx();
ie.enterEventDispatcher();

}
public ImageEx()
{
UiApplication.getUiApplication().pushScreen(new ImageScreen1());
}

}

class ImageScreen1 extends MainScreen implements FieldChangeListener
{
    ButtonField button;
    FileConnection fileconnection;
    DataInputStream dis;
    public ImageScreen1() {

      button=new ButtonField("Get Image");
        add(button);
        button.setChangeListener(this);
    }

    public void  fieldChanged(Field f,int content)
        {
            if(f==button)
            {
                gettingImage();

            }   

        }
        void gettingImage()
        {
            try
            {
        String path="file:///SDCard/B7.png";
          fileconnection = (FileConnection) Connector.open(path,Connector.READ);
            if(!fileconnection.exists())
            {
                fileconnection.create();

            }         

          int length=(int) fileconnection.fileSize();
          byte[] data=new byte[length];
          dis=fileconnection.openDataInputStream();
          dis.readFully(data);

         Bitmap bitmap= Bitmap.createBitmapFromPNG(data, 0, length);
          BitmapField bitmapfield=new BitmapField();
          bitmapfield.setBitmap(bitmap);
          add(bitmapfield);
          dis.close();

        }

        catch(Exception e)
        {
            e.printStackTrace();

        }
        finally
        {
            try
        {
            fileconnection.close();
        }
        catch (Exception e)
        {

        }
        }

    }

}

Use the Global bitmapfield object and do not add it again.

Thank you

Concerning

Abhijit-

Tags: BlackBerry Developers

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