Java Tutorial/J2ME/ImageItem

Материал из Java эксперт
Версия от 05:00, 1 июня 2010; Admin (обсуждение | вклад) (1 версия)
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Combine ImageItem.LAYOUT_NEWLINE_BEFORE, ImageItem.LAYOUT_CENTER,ImageItem.LAYOUT_NEWLINE_AFTER for ImageItem

import java.io.IOException;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.ImageItem;
import javax.microedition.midlet.MIDlet;
public class ImageItemLAYOUT_NEWLINE_BEFORELAYOUT_CENTER extends MIDlet {
  protected Display display;
  protected void startApp() {
    display = Display.getDisplay(this);
    Form form = new Form("Demo");
    form.append("line");
    try {
      Image red = Image.createImage("/red.png");
      form.append(new ImageItem(null, red, 
          ImageItem.LAYOUT_NEWLINE_BEFORE | 
          ImageItem.LAYOUT_CENTER | 
          ImageItem.LAYOUT_NEWLINE_AFTER, null));
    } catch (IOException ex) {
      form.append("Failed to load images");
    }
    display.setCurrent(form);
  }
  protected void pauseApp() {
  }
  protected void destroyApp(boolean unconditional) {
  }
}





ImageItem with default image layout

import java.io.IOException;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.ImageItem;
import javax.microedition.midlet.MIDlet;
public class ImageItemLAYOUT_DEFAULT extends MIDlet {
  protected Display display;
  protected void startApp() {
    display = Display.getDisplay(this);
    Form form = new Form("Demo");
    form.append("line");
    try {
      Image red = Image.createImage("/red.png");
      form.append(new ImageItem("Default", red, ImageItem.LAYOUT_DEFAULT, null));
    } catch (IOException ex) {
      form.append("Failed to load images");
    }
    display.setCurrent(form);
  }
  protected void pauseApp() {
  }
  protected void destroyApp(boolean unconditional) {
  }
}





ImageItem with Image layout center

import java.io.IOException;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.ImageItem;
import javax.microedition.midlet.MIDlet;
public class ImageItemLAYOUT_CENTER extends MIDlet {
  protected Display display;
  protected void startApp() {
    display = Display.getDisplay(this);
    Form form = new Form("Demo");
    form.append("line");
    try {
      Image red = Image.createImage("/red.png");
      form.append(new ImageItem("Center", red, ImageItem.LAYOUT_CENTER, null));
    } catch (IOException ex) {
      form.append("Failed to load images");
    }
    display.setCurrent(form);
  }
  protected void pauseApp() {
  }
  protected void destroyApp(boolean unconditional) {
  }
}





ImageItem with image layout left

import java.io.IOException;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.ImageItem;
import javax.microedition.midlet.MIDlet;
public class ImageItemLAYOUT_LEFT extends MIDlet {
  protected Display display;
  protected void startApp() {
    display = Display.getDisplay(this);
    Form form = new Form("Demo");
    form.append("line");
    try {
      Image red = Image.createImage("/red.png");
      form.append(new ImageItem("Left", red, ImageItem.LAYOUT_LEFT, null));
    } catch (IOException ex) {
      form.append("Failed to load images");
    }
    display.setCurrent(form);
  }
  protected void pauseApp() {
  }
  protected void destroyApp(boolean unconditional) {
  }
}





ImageItem with image layout right

import java.io.IOException;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.ImageItem;
import javax.microedition.midlet.MIDlet;
public class ImageItemLAYOUT_RIGHT extends MIDlet {
  protected Display display;
  protected void startApp() {
    display = Display.getDisplay(this);
    Form form = new Form("Demo");
    form.append("line");
    try {
      Image red = Image.createImage("/red.png");
      form.append(new ImageItem("Right", red, ImageItem.LAYOUT_RIGHT, null));
    } catch (IOException ex) {
      form.append("Failed to load images");
    }
    display.setCurrent(form);
  }
  protected void pauseApp() {
  }
  protected void destroyApp(boolean unconditional) {
  }
}





Load png image to ImageItem

import java.io.IOException;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.ImageItem;
import javax.microedition.midlet.MIDlet;
public class ImageItemExampleMIDlet extends MIDlet {
  protected Display display;
  protected void startApp() {
    display = Display.getDisplay(this);
    Form form = new Form("Demo");
    form.append("line");
    try {
      Image red = Image.createImage("/red.png");
            form.append(new ImageItem(null, red, 
          ImageItem.LAYOUT_NEWLINE_BEFORE | 
          ImageItem.LAYOUT_DEFAULT | 
          ImageItem.LAYOUT_NEWLINE_AFTER, null));
    } catch (IOException ex) {
      form.append("Failed to load images");
    }
    display.setCurrent(form);
  }
  protected void pauseApp() {
  }
  protected void destroyApp(boolean unconditional) {
  }
}





Use ImageItem in a form

import javax.microedition.lcdui.rumand;
import javax.microedition.lcdui.rumandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.ImageItem;
import javax.microedition.midlet.MIDlet;
public class ImageItemMIDlet extends MIDlet implements CommandListener {
  private Command exitCommand = new Command("exit", Command.EXIT, 1);
  private ImageItem imageItem;
  private Image aImage;
  private Display display = Display.getDisplay(this);
  public ImageItemMIDlet() {
    try {
      aImage = Image.createImage("/10.png");
    } catch (Exception e) {
    }
    imageItem = new ImageItem("Java 2", aImage, ImageItem.LAYOUT_CENTER, "image");
  }
  public void startApp() {
    Form aForm = new Form("ImageItem");
    aForm.append(imageItem);
    aForm.addCommand(exitCommand);
    aForm.setCommandListener(this);
    display.setCurrent(aForm);
  }
  public void pauseApp() {
  }
  public void destroyApp(boolean unconditional) {
  }
  public void commandAction(Command c, Displayable s) {
    if (c == exitCommand) {
      destroyApp(false);
      notifyDestroyed();
    }
  }
}