CODEWITHSUNDEEP
javamobilejava-meswipe
Naveed Alam Tareen
Naveed Alam Tareen

Reputation: 63

J2Me swipe image left and right

I am learning Java Program for Mobile, I am trying to create a program thru which I can show images on screen by dragging from left to right, or right to left.

I have touch screen mobile, no harrdware keyboard.

I am trying the below code in which I have two forms and I want to show the other form when I swip the fingure on screen.

    import java.io.IOException;



import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;

public class ImageDisplay extends MIDlet{
 private Display display;
  private Form form1,form2;
  private Image myImage1,myImage2;


  public void startApp(){
      display = Display.getDisplay(this);
      form1 = new Form ("Image Display");
      form2 = new Form("Second Image");
      try {
        myImage1 = Image.createImage("/bgscaled.jpg");
        myImage2 = Image.createImage("/spla77sh.jpg");

    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
      form1.append(myImage1);
      form2.append(myImage2);
      display.setCurrent(form1);
      display.setCurrent(form2);
  }




  public void pauseApp(){

  }


public void destroyApp(boolean unconditional){
      notifyDestroyed();

  }

}

Upvotes: 0

Views: 212

Answers (2)

Boycott A.I.
Boycott A.I.

Reputation: 18911

You will need to use Canvas instead of the Form screens as Canvas has various methods (e.g., pointerDragged) that can be used to determine touch, release and dragging actions.

Using Canvas can be a lot of work though (because your code will be responsible for every pixel that is drawn on the display). However, you may find J2ME Polish useful to transfer your Form UI to Canvas. (I'm not sure, but J2ME Polish might also take care of the swiping behaviour you are looking for, too.)

Upvotes: 0

Telmo Pimentel Mota
Telmo Pimentel Mota

Reputation: 4043

You do not have a way to be notified by an LCDUI Form when a screen swipe happens.
You can add "Next" and "Previous" buttons and change the forms when the buttons are clicked.

Upvotes: 1

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