Java Tutorial/J2ME/ImageItem — различия между версиями

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м (1 версия)
 
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Текущая версия на 08:00, 1 июня 2010

Combine ImageItem.LAYOUT_NEWLINE_BEFORE, ImageItem.LAYOUT_CENTER,ImageItem.LAYOUT_NEWLINE_AFTER for ImageItem

   <source lang="java">

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) {
 }

}</source>





ImageItem with default image layout

   <source lang="java">

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) {
 }

}</source>





ImageItem with Image layout center

   <source lang="java">

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) {
 }

}</source>





ImageItem with image layout left

   <source lang="java">

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) {
 }

}</source>





ImageItem with image layout right

   <source lang="java">

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) {
 }

}</source>





Load png image to ImageItem

   <source lang="java">

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) {
 }

}</source>





Use ImageItem in a form

   <source lang="java">

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();
   }
 }

}</source>