I've created a simple application that displays an advertisement. I used this article. I followed all steps but I get NoClassDefFound error on the BlackBerry 9900 simulator.
Update:
I have used preverify.exe to checks jar file to be compatible with net_rim_api.jar:
preverify -classpath "D:\Eclipse\plugins\net.rim.ejde.componentpack7.1.0_7.1.0.10\com
ponents\lib\net_rim_api" "net_rim_bbapi_adv_app.jar" "D:\Eclipse\plugins\net.rim.ejde.componentpack7.1.0_7.1.0.10\components\bin\output"
i am getting like this,what should i do?
Error preverifying class net.rimlib.blackberry.api.advertising.app.a
java/lang/NoClassDefFoundError: java/lang/Thread
Below, there's my code:
import net.rim.device.api.ui.UiApplication;
import net.rim.device.api.ui.container.MainScreen;
import net.rimlib.blackberry.api.advertising.app.Banner;
public class AdDemo extends UiApplication{
public static void main(String[] args)
{
AdDemo theApp = new AdDemo();
theApp.enterEventDispatcher();
}
public AdDemo()
{
pushScreen(new AdDemoScreen());
}
}
class AdDemoScreen extends MainScreen{
public AdDemoScreen()
{
Banner bannerAd = new Banner(16741, null);
bannerAd.setMMASize(Banner.MMA_SIZE_EXTRA_LARGE);
add(bannerAd);
}
}
How can I overcome this issue?
Thank you.
Hi, I want to create a Login Screen which has a Username and Password
and a Sign in Button
But when a user fails to enter correct information inside the TextField of Username or Password a pop up like the image chat dialog should pop up from corner of TextField's right side displaying appropriate message How can this Customization be achieved?
i am giving you a simple way. If it is not perfect to your question you just ignore this answer.
Here i made logic like following. i gave you two buttons
1)Login
2)remove
I think you know how to validate your text fields right or wrong; keep one if condition ,write your logic if right no need any field
else wrong then you have three conditions
1)id is wrong
2)password is wrong
or 3)both wrong
according two that condition you can add particular tooltip box on above text field .
I am providing sample for both wrong condition and remove condition also
make it as your requirements
Resources :
chat.png image is required for background
Sample code:
package mypackage;
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.XYEdges;
import net.rim.device.api.ui.component.BasicEditField;
import net.rim.device.api.ui.component.ButtonField;
import net.rim.device.api.ui.container.MainScreen;
import net.rim.device.api.ui.container.VerticalFieldManager;
import net.rim.device.api.ui.decor.Border;
import net.rim.device.api.ui.decor.BorderFactory;
/**
* A class extending the MainScreen class, which provides default standard
* behavior for BlackBerry GUI applications.
*/
public final class MyScreen extends MainScreen implements FieldChangeListener
{
/**
* Creates a new MyScreen object
*/
private BasicEditField id,password;
private ButtonField login,cancel;
private VerticalFieldManager id_mgr,pass_mgr;
private PopupField id_hint,pass_hint;
public static Bitmap img;
public MyScreen()
{
img=Bitmap.getBitmapResource("chat.png");
// Set the displayed title of the screen
setTitle("Login Page");
Border b=BorderFactory.createRoundedBorder(new XYEdges(5, 5, 5, 5), Border.STYLE_SOLID);
id_hint=new PopupField("Wrong Id", img);
pass_hint=new PopupField("Wrong password", img);
id_mgr=new VerticalFieldManager();
id=new BasicEditField(){
protected void layout(int width, int height) {
super.layout(120, 40);
setExtent(120, 40);
}
};
id.setBorder(b);
add(id_mgr);
add(id);
pass_mgr=new VerticalFieldManager();
password=new BasicEditField(){
protected void layout(int width, int height) {
super.layout(120, 40);
setExtent(120, 40);
}
};
password.setBorder(b);
add(pass_mgr);
add(password);
login=new ButtonField("Login");
login.setChangeListener(this);
add(login);
cancel=new ButtonField("Remove");
cancel.setChangeListener(this);
add(cancel);
}
public void fieldChanged(Field field, int context) {
if(field==login)
{
try {
// id_mgr.add(new NullField(Field.FOCUSABLE));
id_mgr.add(id_hint);
id_mgr.setPadding(0, 0, 0, 50);
pass_mgr.add(pass_hint);
pass_mgr.setPadding(0, 0, 0, 50);
id_hint.setFocus();
} catch (IllegalStateException e) {
return;
}
}else if(cancel==field)
{
synchronized (UiApplication.getEventLock()) {
id_mgr.deleteAll();
pass_mgr.deleteAll();
}
}
}
}
and class for PopupField.java is
package mypackage;
import net.rim.device.api.system.Bitmap;
import net.rim.device.api.ui.Color;
import net.rim.device.api.ui.Graphics;
import net.rim.device.api.ui.component.BitmapField;
public class PopupField extends BitmapField{
private Bitmap img,scalled_img;
private String message;
private int layout_width;
public PopupField(String message,Bitmap img)
{
this.message=message;
layout_width=this.getFont().getAdvance(message)+40;
scalled_img=new Bitmap(layout_width, img.getHeight());
img.scaleInto(scalled_img, Bitmap.FILTER_BILINEAR);
this.img=scalled_img;
}
protected void layout(int width, int height) {
super.layout(img.getWidth(), img.getHeight());
setExtent(img.getWidth(), img.getHeight());
}
protected void paint(Graphics graphics) {
graphics.drawBitmap(0, 0, img.getWidth(), img.getHeight(), img,0,0);
graphics.setColor(Color.RED);
graphics.drawText(message,20,20);
super.paint(graphics);
}
}
output image :
keep helping to others
Other solution is this link will tell you
http://v4ks1n.wordpress.com/2011/01/28/tooltips-class-for-blackberry/
I can't figure out why I keep getting the following errors with the following code:
HelloWorldApp.java:9: pushScreen(net.rim.device.api.ui.Screen) in net.rim.device.api.ui.UiApplication cannot be applied to (com.beginningblackberry.helloworld.HelloWorldMainScreen)
pushScreen(mainScreen);
HelloWorldMainScreen.java:10: cannot find symbol
symbol : method add(net.rim.device.api.ui.component.LabelField)
location: class com.beginningblackberry.helloworld.HelloWorldMainScreen
add(labelField);
\\HelloWorldApp.java
package com.beginningblackberry.helloworld;
import net.rim.device.api.ui.UiApplication;
class HelloWorldApp extends UiApplication {
HelloWorldApp() {
HelloWorldMainScreen mainScreen = new HelloWorldMainScreen();
pushScreen(mainScreen);
}
public static void main(String[] args){
HelloWorldApp app = new HelloWorldApp();
app.enterEventDispatcher();
}
}
\\ HelloWorldMainScreen.java
package com.beginningblackberry.helloworld;
import net.rim.device.api.ui.container.MainScreen;
import net.rim.device.api.ui.component.LabelField;
class HelloWorldMainScreen {
HelloWorldMainScreen() {
LabelField labelField = new LabelField("Hello World");
add(labelField);
}
}
in HelloWorldMainScreen you probably need to extend some other class or need to provide the implementation of the add()
I got the book Advance Black Berry 6 Development.
I was able to get the midlet example to work, but not the first example for a CLDC program. It seems like it never gets to the code and when I run the app I get a blank white screen.
I tried to put a break point but it never went off.
Here is the code
package test.org;
import net.rim.device.api.ui.UiApplication;
import net.rim.device.api.ui.component.*;
import net.rim.device.api.ui.container.*;
public class cHelloUniverses extends UiApplication{
public static void main(String[] args)
{
(new cHelloUniverses()).start();
}
public void start()
{
MainScreen main = new MainScreen();
LabelField label= new LabelField("Hello Ted");
main.add(label);
UiApplication app = UiApplication.getUiApplication();
app.pushScreen(main);
app.enterEventDispatcher();
}
}
Replace your start() method with this:
public void start()
{
MainScreen main = new MainScreen();
LabelField label= new LabelField("Hello Ted");
main.add(label);
this.pushScreen(main);
this.enterEventDispatcher();
}
How can I lock the keypad in Blackberry application using "lockSystem" method in J2ME ??
And also the brightness of the blackberry should reduce to Zero ??
its really easy. I know the answer. We can just use the method "lockSystem". I have coded as following to lock the keypad. It takes long time for me to find it, but u got this.
package net.asem;
import net.rim.device.api.system.ApplicationManager;
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.ButtonField;
import net.rim.device.api.ui.component.LabelField;
import net.rim.device.api.ui.container.MainScreen;
public class LockBlackberry extends UiApplication
{
public static void main(String[] args)
{
LockBlackberry lockB = new LockBlackberry();
lockB.enterEventDispatcher();
}
LockBlackberry()
{
pushScreen(new myBlackBerryClass());
}
}
final class myBlackBerryClass extends MainScreen implements FieldChangeListener<br>
{
LabelField title;
ButtonField btn1;
myBlackBerryClass()
{
LabelField title = new LabelField("Title : Locking the Device.",LabelField.USE_ALL_WIDTH | LabelField.USE_ALL_WIDTH);
setTitle(title);
btn1 = new ButtonField("KeyPad Loack ?",ButtonField.CONSUME_CLICK);
btn1.setChangeListener(this);
add(btn1);
}
public void fieldChanged(Field field, int context)
{
if(field == btn1)
{
Click();
}
}
private void Click()
{
ApplicationManager manager = ApplicationManager.getApplicationManager();
manager.lockSystem(true);
}
}